NanoEC™ SPU™ is an integrated smart glass technology that allow passengers to shade their windows on-demand from 50% down to 3% light transmission.

Developed by Heliotrope Technologies, the NanoEC™ SPU™ product can be easily integrated in a standard IGU as either the outboard or inboard lite depending on desired solar/thermal performance. As a result, the need for manual shades/blinds is removed along with providing an enhanced experience for the passenger through comfort and unobscured views of the exterior landscape. Operators benefit from potential reductions in maintenance, operation, and installation costs with a weight neutral solution. NanoEC™ SPU™ can also be easily integrated into the growing trend of information systems for on-board and off-board applications, real time passenger information, entertainment and commercial advertisements.

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ScreeneX® is an LCD embedded glass technology that transforms windows and other glass elements into vivid digital Information displays for passengers. Conventional windows,doors and partition walls become a dynamic communication channel.

A window of real-time communication, ScreeneX®, is a new generation of information systems for on-board and off-board applications, real time passenger information, entertainment and commercial advertisements.

Featuring an embedded TFT – LCD panel inside the glass unit, ScreeneX® allows operators to control and tailor information displayed to passengers and consumers. Because the screen is embedded into the glass unit, the surface on both sides is as smooth and clear as regular glass.


P C Henderson is pleased to launch our new Twinbolt locking system for use with our leading exterior door hardware system, Securefold.

Twinbolt is a sophisticated locking system for exterior folding doors whereby one simple turn of a handle engages a 22mm throw to securely lock the doors at the top and bottom of the system. Designed as a stylish and more concealed alternative to flush bolts, which require manual locking in two separate areas, we anticipate the product to be a popular addition to the range.

Twinbolt locking systemNew features include the system being able to work with any euro cylinder lock meaning installers have the freedom and flexibility to use their preferred choice of lock – as well as an increased throw of 22mm, providing added security.

This also provides installers with greater flexibility in regards to the gap between the door and the frame, an important factor due to timber doors being known to expand and contract after installation.

A range of accessories are available to add to the refinement of the product including a stylish Malta Handle Kit and routing rubber cover strips available in a variety of colours.

Finer details such as the inclusion of a factory set handle height (1050mm) and easy adjustment of the top lock rod – to suit standard and non-standard doors heights – demonstrates the high standard of design and manufacturing from P C Henderson.

Andrew Royle, Sales and Marketing Director at P C Henderson, commented, “Although the previous version of Twinbolt worked extremely well, customer feedback told us that it required increased flexibility. The new system will accept any standard euro cylinder lock which makes the system a lot more future proof for any future lock or handle changes. The system as a whole is the perfect add on for our Securefold system, it’s discreet, stylish, convenient, requires effortless operation and we’re confident it will be received well by the market”.

Developed as a direct result of customer feedback, the system is available in five kit variants suitable for top hung, bottom rolling, mortice and non-mortice Securefold systems as well as our heavier weight capacity system, Securefold 150.

Securefold is a an exterior folding door hardware system which is available for top hung wooden doors weighing up to 50kg, 100kg or 150kg as well as bottom rolling doors weighing up to 80kg. A high security version of the product – Securefold Ultra – is also available which Twinbolt can be used with.

Watch the promotional video here:


This 3-star Sold Secure Diamond Cylinder sets a completely new standard in home security and is unlike any other lock cylinder on the market.

Everyone can see that an aïr bi-folding or lift & slide door is immensely pleasing to the eye, but this unrivalled stylishness counts for nothing if it fails to provide sufficient security.

Happily it does as we supply all aïr products with the Ultion cylinder as standard, one of the world’s most secure locking systems.

Unbeatable security

This 3-star Sold Secure Diamond Cylinder sets a completely new standard in home security and is unlike any other lock cylinder on the market. How is it so different to anything else?

It has an 11-pin configuration with a special lock-down mode that triggers if an attack is detected; we’re talking about lock picking, lock bumping or lock drilling.

It’s so secure that Brisant-Secure, the company responsible for developing Ultion, are confident enough to offer homeowners a FREE 10 year £1,000 guarantee against burglary as a result of an Ultion lock snapping.

Even with the key inside the lock, the Ultion remains completely snap secure. Paired with our Secured by Design certification, it makes the ultimate security system for your home.

Secured by Design

For anyone unfamiliar with Secured by Design, let us quote the Secured by Design website –

“Secured by Design focuses on crime prevention of homes and commercial premises and promotes the use of security standards for a wide range of applications and products.”

Its objective is to reduce burglary and crime in the UK by designing out crime through physical security and processes.

So, installing an aïr 500LS, 600LS or 800 to Secured by Design standard is something definitely worth considering, especially as the initiative has the full backing of the Police.

“This 3-star Sold Secure Diamond Cylinder sets a completely new standard in home security “

aïr and Ultion = a perfect match

Choosing to offer Ultion cylinders with aïr doors was an easy decision to make as we know that customers are increasingly concerned about security.


Air Logo


RoofLight Solutions Ltd is now able to supply or supply, fix and glaze an extensive range of Aluminium Curtain Wall Systems into new or existing structural openings to suit every budget, project size and performance requirements.

Their client portfolio is ever expanding and they have worked with property developers, construction firms, local authorities and the general public to meet their exact curtain wall requirements.

Curtain Walling UK is uniquely positioned in the marketplace as we are able to supply and install systems from a variety of different suppliers including SMART and our primary system supplier; Senior Architectural Systems (SAS).

This way of working allows them to supply an extensive range of systems to suit our client’s individual requirements. They are able to supply an almost unlimited choice of colours and finishes to both the inside and out, along with sloping and frameless vent options.

With such a range of products, their technical team is on hand to guide you and help you decide on the right system to meet your exact requirements.




The global Aluminum Curtain Wall market was valued at USD 25.1 billion in 2017 and is anticipated to grow at a CAGR of more than 9.3% during the forecast period.

An aluminum curtain wall is a thin aluminum-framed wall, which contains in-fills of glass, metal panels, or thin stone. This frame is attached to building structures and does not carry the floor or roof loads of the building.

Use of aluminum curtain walls enhances the energy efficiency of buildings while reducing HVAC costs. The demand for aluminum curtain wall has increased over the years owing to increasing environmental awareness and growing trend towards energy efficient buildings.

The growth in construction industry and rising need to protect exterior walls of structures drive the growth of the market. The increasing construction of commercial structures such as factories, offices, and institutions supplement the growth of the market.

The increasing demand for energy efficient building solutions, and moisture management in buildings along with introduction of innovative aluminum curtain wall products in the market at competitive prices by market players further augment market growth.

Stringent government regulations regarding energy use, reduction in operation costs, and trend towards green buildings also boost the adoption of aluminum curtain walls. Growing demand from emerging economies, increasing consumer awareness, and growth of eco-friendly infrastructure are factors expected to provide numerous growth opportunities in the coming years.


Asia-Pacific Aluminum Curtain Wall Market By Type, 2017 – 2026

Asia-Pacific Aluminum Curtain Wall Market By Type, 2017 - 2026
Note: Inside circle depicts data for 2017 & outside circle depicts data for 2026


Segment Analysis

The global Aluminum Curtain Walls market is segmented on the basis of type, application, and region. Based on type, the market is segmented into stick-built, unitized, and semi-unitized. On the basis of application, the market is segmented into residential, commercial, and public.

This report comprises a detailed geographic distribution of the market across North America, Europe, APAC, Latin America and MEA. North America is further segmented into U.S., Canada, and Mexico.

Europe is divided into Germany, UK, Italy, France, and Rest of Europe. Asia-Pacific is bifurcated into China, India, Japan, and Rest of Asia-Pacific. Asia-Pacific accounted for the largest share in the Global Aluminum Curtain Wall market in 2017.


Asia-Pacific Aluminum Curtain Wall Market, By Type, 2017 – 2026 
(USD Million)

Asia-Pacific Aluminum Curtain Wall Market, By Type, 2017 - 2026 (USD Million)


Competitive Landscape

The leading players in the market include EFCO Corporation, HansenGroup Ltd., Kalwall Corporation, National Enclosure Company, Sapa Building Systems Ltd., Ponzio Srl, Kawneer Company, Inc., Josef Gartner GmbH, GUTMANN AG, Alumil Aluminium Industry S. A, HUECK System GmbH & Co. KG, and Schüco International among others.

These leading players in the market are introducing innovative products in the market to cater to the consumers. Global players are entering new markets in developing regions to expand their customer base and strengthen market presence.


Key questions answered by the report

  • What is the current Market Size and Forecasts of Global Aluminum Curtain Wall Market
  • What is the market opportunity for Aluminum Curtain Wall types
  • How big is the market size for different types in the Global Aluminum Curtain Wall Market
  • How much is the estimated market for Aluminum Curtain Wall in North America during the forecast period
  • What are the companies in this market and how are they classified
  • What are the available opportunities and who are the top market players in this space
  • Which are the major applications and what traction are they gaining in the market





The tall, wide-span panes create a frameless glass wall that’s the perfect design choice for homes that need a seamless connection from the inside living space to the outdoors.

Infinium has been engineered to be the perfect system for framing a view from a room. The tall, wide-span panes create a frameless glass wall that’s the perfect design choice for homes that need a seamless connection from the inside living space to the outdoors.

With the slimmest of interlock sightlines — just 21mm wide — Infinium creates a wall of glass with minimum interruption. The frame and sash of Infinium are concealed within the wall whilst the flush threshold and fully concealed hardware finish the look.

Infinium – Engineered with Precision

Infinium slimline sliding doors are available with a double track in configurations with up to four door sashes. Each door sash can be up to 3000mm wide and 3500mm high for the widest glazed area.

To bring natural light and the outdoors inside, but keep the elements out, Infinium offers U-Values as low as 1.0 W/m2K with the assistance of double thermal breaks and double or triple glazed units.

These large, heavy panes of glass sit on bespoke-designed aluminium rollers to give the sliding slimline glazing effortless glide. There is also the option to have automated sliding doors, with a custom-built motorised lock and sliding system, which means the doors can be opened and closed at the touch of a button.

Infinium: Truly Slimline Glazing

Whether you’re an architect planning a modern new-build with lots of glazed areas or working on a home transformation to bring more light into an existing building, Infinium is a stunning choice for your glazing.

The flush threshold and concealed frame gives the illusion of glass coming straight of the wall, with no frame at all – the stunning combination of expert engineering and beautiful design creates slimline glazing that takes framing a view to new heights.

A High-end Sliding Door Needs Top-quality Manufacturing

Infinium glazing can only be manufactured by approved fabricators, chosen by the systems company. We have been selected to manufacture Infinium, because of our award-winning, precise manufacturing. This means that Infinium minimal frame glazing will be delivered to site, ready to be installed.

Certified Installation

The Infinium system can also only be installed by certified installers, creating an exclusivity around the product that will give your installation company a fantastic USP. It will also minimize risk of damage on site so that homeowners and project managers are given complete peace of mind during Infinium’s installation.

Download a Brochure

Infinium is available now from AluFoldDirect. You can learn more about it in our brochure or visit the Aluminium Glazing Design Centrein Blackburn for a tour of our showroom with AluFoldDirect’s aluminium glazing experts. We help architects, developers, homeowners and installers to choose the best aluminium glazing products for their projects.




All offices must be well ventilated. To meet increasingly stringent Health and Safety regulations, a continuous supply of fresh air is necessary.

Adequate ventilation is also a pre-requisite for a healthy and productive workforce. Studies show that workers who are comfortable in their working environment are over 60% more productive. Workers in a well-ventilated office are also less likely to become ill.

There are several methods to ventilate an office space. The best choice for you will depend on the office size and the range of equipment in use. An office with lots of staff, computers, and machinery will generate more heat, thus requiring better ventilation. When ventilating your office, it’s important to consider these options.



natural ventilation system circulates air in a building without using a mechanical system. External air is directed through the internal space by using advanced control systems.

The control system can be connected to a variety of different sensor types including rain, wind, and temperature sensors. The control system can also be linked to a manual controller such as a switch or remote control to activate the ventilation process.

When designing your natural ventilation system, you must consider several factors. These include:

  • Building location – Whether it’s urban or more isolated. Sheltered or exposed.
  • Building height – The higher the building, the more external conditions will influence its natural ventilation.
  • Indoor layout and partitions – The interior set up will both restrict and enable air flow.
  • Window types – The size, shape, and opening arc of any windows will directly affect the ventilation capacity.

The type of natural ventilation system suitable for a building will ultimately be determined by a combination of the building’s natural external environment and the interior layout and building structure.



In the event of fire, all office buildings must be designed to facilitate the safe escape of workers. A smoke ventilation system will release smoke from stairwells, atriums, and corridors to allow a safer exit.

Smoke ventilation systems can be manually or automatically activated. Smoke sensors or smoke alarms can directly link to the smoke vent, automatically triggering its opening when smoke is detected.

Smoke vents can also be manually activated by an emergency break glass point or by a Fire Officer at an override switch. Once the smoke ventilation system is activated, the vent will remain open until all smoke has dissipated or the system has been manually reset.



Alongside Window Actuators connected to natural and smoke ventilation systems, there are a range of independent automatic window opening systems available. Remote window opening actuators are perfect for large office spaces, particularly where windows are situated out of reach at a high level.

Window actuators can be controlled by a selection of switches, key switches, remote transmitters and receivers, and 24V DC transformers. Window automation can be designed and implemented into the ventilation system or work separately to allow increased airflow when necessary.

At Teal Products, we have over 17 years’ experience supplying high quality window control products and ventilation systems.

We pride ourselves on our outstanding customer service and are always happy to offer advice on product specification and installation. When you want to create a comfortable and well-ventilated office space, Teal Products can provide you with the best solution.


Teal Products


Today, glass used in the building industry must combine a number of different functions. POLFLAM® fire-resistant glass meets those requirements. It is a perfectly flexible and multifunction product which lives up to the current market trends.

Fire-resistant glass – why did it happen? For optical lightness of a building and to fill it with natural daylight. It was in no time that fire-resistant glass replaced ordinary opaque indoor walls or the old-type construction glass for facades.

Today, we also have it in ceilings and stairs which is not the end of the story. POLFLAM® fire-resistant glass may have a number of different functions beside its basic one.

Fire-resistant, anti-burglary, insulating and intelligent glass – all in one, that is, POLFLAM®

Firstly: resistance to fire

POLFLAM® glass has been made in all the fire-resistance classes, from EI 30, through EI 60, EI 90 and EI 120, up to EI 180. Following the PN-EN 1363-1  standard, it meets the fire tightness criteria, which has been confirmed with many tests carried out in notified European laboratories.

In the production process, POLFLAM® uses a state-of-the-art hydrogel technology. The latter accounts for ideal functional parameters of the glass units, like high transparency or acoustic insulation. What’s more, the glass acquires extra functionalities thanks to the technology allowing sealing additional panes to the unit.

Secondly: enhanced resistance

POLFLAM® fire-resistant glass with an extra glass pane of higher safety class (P), is a model example of the multifunction product. It can be a curtainwall being, at the same time, resistant to impact, which means that the glass also protects against burglary.

POLFLAM laminated glass is available in all the resistance classes, from P2 to P7. It has been applied in floors or display windows, and in doors, windows or facades.

Fire-resistant, anti-burglary, insulating and intelligent glass – all in one, that is, POLFLAM®

Thirdly: acoustic insulation

Curbing noise levels in buildings designed for use by people has currently been such an important issue to have it regulated by construction law. Therefore, architects will ask for materials, including glass, of high sound control and sound absorption parameters.

These are of particular importance when we take conference rooms or glass walls separating open-space areas, needless to mention concert halls, where sound control is absolute priority.

POLFLAM® fire-resistant glass lives up to the sound proofing parameters recommended in spaces of particular noise load. Its bear unit’s Rw factor is 40-47 dB, depending of the EI class, while the unit with appropriate extra glass panes sealed to it easily achieves Rw of up to 52 dB!

Fourthly: PD-LCD, that is, changeable transparency

When adding to the unit a so called intelligent glass pane based on the liquid crystals technology, POLFLAM® fire-resistant glass partitions acquire a completely new function.

Glass units passing from transparency to full opacity make it possible, if need be, to isolate office spaces without using any blinds or to make ad hoc overhead screens in museums or art galleries, or partitions in hospital spaces. This type of glass when applied in facades allows architects to abandon traditional sunshades.

Fifthly: self-cleaning function

The self-cleaning layer is an ideal solution for fire-resistant glass applied in hard to reach or difficult to clean places, like facades or skylights. Under the influence of UV radiation, the dirt on the glass decomposes in the process of photocatalysis and flows down completely with the rain. With this layer, POLFLAM® glass keeps the facade shiny and transparent with no sign of dirt or stains.

Sixthly: thermal insulation

Heat losses are another important issue for facades, including those resistant to fire. POLFLAM® glass can be sealed with most float glasses available on the market that have perfect thermal properties.

For double cavity units sealed to POLFLAM® glass, the Ug factor is as low as 0.5 [W/m2 K]. The lower the Ug, the lower the heat losses through glass and the better the savings all through the heating period.

Fire-resistant, anti-burglary, insulating and intelligent glass – all in one, that is, POLFLAM®

Seventh: solar control

This issue is of utmost importance for facades exposed to the south or west, especially in the summer. Through using a selective-layer glass pane added to POLFLAM® fire-resistant glass solar radiation can be reflected and, thus, solar penetration controlled.

The latter protects buildings against overheating, which not only means better working conditions but also tangible financial benefits – bearing in mind the cost of cooling and air conditioning that is higher than the cost of heating.

Today, glass used in the building industry must combine a number of different functions. POLFLAM® fire-resistant glass meets those requirements. It is a perfectly flexible and multifunction product which lives up to the current market trends.


Polflam Logo


Post-Grenfell, Tim Kempster, managing director of Wrightstyle, looks at fire safety in tall buildings.

The Grenfell Tower disaster will cast a long shadow for many years to come, helping to define official attitudes to social housing and the imperative of fire safety in tall buildings.

While it’s too early to point fingers, it seems apparent that UK authorities have been complacent in believing that current regulations were fit for purpose and that, once again, it will be a case of “codifying by catastrophe.”

But it’s worth remembering that, while official enquiries grind forward, the building industry is still building upwards – and that fire safety in tall buildings is in a spotlight like never before.

Most of the UK’s tall buildings are in London, with others in Manchester, Birmingham, Leeds, Liverpool, Sheffield, Swansea and Brighton.

In London, there are 450 tall buildings in the pipeline.  Of those, over 90 are being constructed, and the pace of upward development in the capital is accelerating, with 28 tall building completions this year, and 40 more in 2018.  Brexit, it would appear, has yet had little dampening effect.

Those figures come from the London Tall Buildings Survey, which charts the number of towers of 20 storeys or more completed, proposed or currently in planning across the capital’s 33 boroughs.

The tallest residential building both in London and Europe will be the 67-storey Spire London at 235 metres high, near Canary Wharf, and scheduled for completion in 2020.

Or Chelsea Waterfront which will have two glass residential towers of 37 and 25 storeys, and Keybridge, the UK’s tallest residential brick tower, at 37 storeys, and 1 Undershaft, which will be the second-tallest building in western Europe – and the tallest building in the City of London.


Twin Towers

The Shard remains the tallest building in both the UK and Europe, topping out at 310 metres with 87 storeys.  It has 11,000 panes of glass and a total surface area of 56,000 square metres, and is partly residential.

Its early designs were influenced by a report from the US National Institute of Standards and Technology (NIST) into the collapse of the Twin Towers in September 2001, which were just over 400 metres tall, which found that “the towers withstood the impacts and would have remained standing were it not for the dislodged insulation (fireproofing) and the subsequent multi-floor fires.”

While the Shard is the tallest building in Europe, it will be dwarfed by the tallest of them all, the Kingdom Tower in Jeddah, Saudi Arabia – the first habitable building to pass the one kilometre mark, and due for completion in 2019.

The £780 million Kingdom Tower will stand at just over 1,000 metres, have 200 storeys, and require some 500,000 cubic metres of concrete and 80,000 tons of steel.  It will also be partly residential.

It will be three times higher than the Shard and 173 metres taller than Dubai’s Burj Khalifa, currently the world’s tallest building at over 828 metres – with 160 storeys.

The challenges will be immense, not least how to pump wet cement half a mile upwards.  To erect the Burj Khalifa, cement pumping took place at night to reduce heat.


World Trade Center

But it’s China that is setting the pace, with a number of ultra high-rise developments, including the Shanghai Tower which, at 632 metres, is China’s tallest building – and the second tallest in the world.

The new 541 metre One World Trade Center, the building that replaced the Twin Towers, is the only US skyscraper in the Top 10 tallest buildings in the world at 541 metres – but not for long as other countries build further into the sky.

Third in the super-tall list is the Makkah Royal Clock Tower Hotel, in Mecca, Saudi Arabia.  Besides hotel rooms, the tower has a conference centre, an Islamic Museum and prayer room for up to 10,000 people, a Lunar Observation Centre for watching the moon during the Holy Month, and a shopping mall with five storeys.

In London, with high land prices, the logic of building upwards is inescapable, and creating high-rise residential blocks will help to alleviate the city’s chronic housing shortage – if design lessons from the past can be learned.

Glasgow’s Red Road flats are a case in point.  Built in the early 1960s, and Europe’s highest residential blocks when they were built, the steel-framed buildings were fire-proofed with asbestos, which blighted the flats for years.

But the biggest lesson for architects, building designers and fire safety experts must be to take heed of Grenfell Tower and to never again lapse into false security.  That’s the real lesson from that disaster – that complacency is the enemy of fire safety.

At Wrightstyle, we have worked on fire safety on a number of high-rise developments in the UK and internationally. We have also publicly raised concerns about fire regulations in both the UK and UAE, and changed our certification processes, so that a fire certification on one of our glazing systems could not be unilaterally applied on another project.

In the new generation of super-buildings, fire safety takes on a whole new dimension, because – beyond sprinkler systems – how do you tackle a fire a kilometre up in the sky?



The answer is: with great difficulty, and there have been several notable cases where a sprinkler system has made things worse, with cold water coming into contact with non-fire rated glass and causing the glass to break and allowing more oxygen to reach the seat of the fire.  The same is true of tempered glass, with a limited fire-rating.

The most effective way of dealing with fire at high altitude is by fire compartmentation: keeping the fire contained in one protected area and preventing it from spreading.  A contained fire can be dealt with; an uncontrolled fire can’t.

A rule of thumb for fire safety in supertall buildings is that any fire should be able to burn itself out, without external intervention, and without building collapse.  That allows for a limited evacuation of people on the affected floor and on floors immediately above and below the fire.

In that context, in the 1950s, Frank Lloyd Wright once proposed The Illinois, a mile-high skyscraper of nearly 550 storeys, with enough room for 100,000 people.  It was fanciful then, but not so fanciful now.  It’s probably only a matter of time before human imagination and construction technology make it possible.

Over the years, we’ve seen the good, bad and the ugly of fire safety design, and hope that the new cities in the sky pay heed to the absolute need for a whole new level of fire safety and, if the worst does happen, have fire containment strategies to ensure everyone’s safety.

After Grenfell, that’s the least that we in the UK can do.




A comprehensive fire protection program addresses at least three things: detection, suppression and compartmentation. Detection devices such as smoke and fire alarms provide early warnings and are essential for alerting people to danger.

Strategically placed sprinklers and extinguishers can make a tremendous difference in how quickly a fire can be suppressed.

The important job of compartmentation is often overlooked, because it is the work of more passive forms of protection. The very materials a building is constructed with do the job of containing a fire in a limited area, keeping it from spreading unchecked throughout a building. Walls, ceiling tiles and sealants all serve as firestops.

One practically invisible firefighter can be glass. Great advances have been made in fire-rated glazing materials, making glass a powerful ally in efforts to provide life safety.

Ordinary window glass cannot withstand the high temperatures associated with a structure fire, and it will break and fall out of its frame at about 250° F, only a few minutes into a fire. On the other hand, glass that is classified as “fire-rated” for at least 60 minutes can tolerate heat in excess of 1600° F.

For decades, fire-rated glazing was limited to one product: polished wired glass. It was the only glass able to survive the rigorous testing process. Yet wired glass has its drawbacks. Many people mistakenly assume that the wires make the glass stronger and more impact resistant. In reality, wired glass is only 1/4 as strong as tempered or laminated glass and provides a minimal amount of protection against impact.

With such low impact resistance, current building codes have eliminated the use of traditional wired glass in what are considered “hazardous” locations (doors, sidelites, windows near the floor, etc.).

When wired glass was the only fire-rated glass option available, it posed a real dilemma: Which priority takes precedence — fire safety or impact safety? One or the other had to be compromised in many locations, simply because no product existed that could fully satisfy both needs.

Fortunately, the situation has changed dramatically. A number of newer, “wire-free” products have emerged that are greatly expanding choices. Diverse in make-up and characteristics, these new materials have been able to substantially surpass wired glass in terms of fire and impact safety performance.

One category of fire-rated glass that has emerged isn’t technically a glass at all. In fact, it is ceramic. Ceramic has long been known for its outstanding heat tolerance, which is why you’ll find it used in everything from kitchen cooktops to car engines. Utilizing state-of-the-art technology, manufacturers have developed the ability to create transparent sheets of ceramic that look like ordinary window glass. Glass ceramic (such as the FireLite® family of products) has earned fire ratings up to 3 hours.

Ceramic also is available with high impact safety ratings, making it an ideal option for high traffic areas such as busy corridors and lobbies in schools and hospitals. It can be specified in insulated units to meet energy codes for exterior applications.

Another category of wireless fire-rated glass found in the market today is specially tempered glass. This group offers limited fire protection, because specially tempered glass cannot withstand what is known as “thermal shock.” When glass is tested for a fire rating for more than 20 minutes, it is blasted with water from a fire hose immediately after being heated in a furnace fire.

This important test makes sure the glazing product, hot from the fire, will stay in place if sprayed with water from sprinklers or other sources. Specially tempered glass cannot survive this portion of the test, and so the codes dictate that it can only be given a 20-minute rating. The limitations of this product category are important to keep in mind, because specially tempered glass is sometimes marketed inappropriately as carrying higher ratings “without the hose stream test,” when in reality, passing that test is not optional for a 45 or 60 minute rating.

Simply stated, do not accept the use of products listed for 45 or 60 minutes that have not passed the required fire hose stream portion of national test standards. If you do, you may be accepting unneeded risks and liability.

Glass firewalls are another classification of fire-rated glass. These products are actually tested to the same standards as solid walls, with ratings up to 2 hours. In addition to stopping flames and smoke, glass firewalls block the transfer of heat, similar to a fire-rated masonry wall. As little heat passes through the glass during a fire, glass fire walls can be installed from wall to wall and floor to ceiling, and include glass doors, if desired. Designers then can divide space without the use of solid walls that diminish visibility, security and light.

Of course, all these glass options need to be installed in frames. Until recently, framing options lagged behind fire-rated glazing in terms of new developments. In most cases, designers were forced to resort to traditional hollow metal steel frames. However, new narrow profile European style doors and framing have changed that. Products such as Fireframes® now offer new opportunities for architects seeking alternatives to traditional wrap-around framing.

Some code officials will occasionally allow trade-offs, where architects can substitute sprinklers and ordinary window glass for fire-rated glazing. However, testing has shown that in some cases, sprinklers can actually cause non fire-rated glass to shatter and fall out of the frame. Unless the glass is completely bathed in water early in the fire, the glass experiences the thermal shock mentioned earlier. When it vacates the opening, flames and smoke are no longer restricted from entering a space.

What’s more, since sprinklers are “active” systems, they require a number of steps to occur as planned in order to function properly. Human error, power outages, interrupted water supplies, melting pipes and even paint have interfered with sprinkler performance.

Sprinklers have saved countless lives and are a critical component in fire safety. However, reliance on a single system for fire protection may create unnecessary risk, particularly when the system can be affected by so many variables. The ideal fire protection plan should include passive systems such as fire-rated glass in addition to more active systems such as “deluge” sprinklers where glass is in the area.

The new developments in fire-rated glazing and framing continue to raise the standard for both performance and design. When properly specified and installed, fire-rated glazing and framing systems can be powerful friends in the fight against the devastating effects of fire.

by Jerry Razwick

Jerry Razwick is founder and president of Technical Glass Products (TGP), a distributor of specialty glass and framing as well as architectural products. He has been a glass factory agent in foreign and domestic markets for over 25 years. Mr. Razwick has served on the Industry Advisory Committee for Underwriters Laboratories, Inc. and is an active member of AIA, CSI, NGA and GANA.



  • By Jerry Razwick, Technical Glass Products

Glass is one of the most popular and versatile building materials used today, due in part to its constantly improving solar and thermal performance. One way this performance is achieved is through the use of passive and solar control low-e coatings. So, what is low-e glass? In this section, we provide you with an in-depth overview of coatings.

In order to understand coatings, it’s important to understand the solar energy spectrum or energy from the sun. Ultraviolet (UV) light, visible light and infrared (IR) light all occupy different parts of the solar spectrum – the differences between the three are determined by their wavelengths.

SpectrumCurve_Sketch REVISE_4

  • Ultraviolet light, which is what causes interior materials such as fabrics and wall coverings to fade, has wavelengths of 310-380 nanometers when reporting glass performance.
  • Visible light occupies the part of the spectrum between wavelengths from about 380-780 nanometers.
  • Infrared light (or heat energy) is transmitted as heat into a building, and begins at wavelengths of 780 nanometers. Solar infrared is commonly referred to as short-wave infrared energy, while heat radiating off of warm objects has higher wavelengths than the sun and referred to as long-wave infrared.

Low-E coatings have been developed to minimize the amount of ultraviolet and infrared light that can pass through glass without compromising the amount of visible light that is transmitted.

When heat or light energy is absorbed by glass, it is either shifted away by moving air or re-radiated by the glass surface. The ability of a material to radiate energy is known as emissivity. In general, highly reflective materials have a low emissivity and dull darker colored materials have a high emissivity. All materials, including windows, radiate heat in the form of long-wave, infrared energy depending on the emissivity and temperature of their surfaces. Radiant energy is one of the important ways heat transfer occurs with windows. Reducing the emissivity of one or more of the window glass surfaces improves a window’s insulating properties. For example, uncoated glass has an emissivity of .84, while Vitro Architectural Glass’ (formerly PPG glass) solar control Solarban® 70XL glass has an emissivity of .02.

This is where low emissivity (or low-e glass) coatings come into play. Low-E glass has a microscopically thin, transparent coating—it is much thinner than a human hair—that reflects long-wave infrared energy (or heat). Some low-e’s also reflect significant amounts of short-wave solar infrared energy. When the interior heat energy tries to escape to the colder outside during the winter, the low-e coating reflects the heat back to the inside, reducing the radiant heat loss through the glass. The reverse happens during the summer. To use a simple analogy, low-e glass works the same way as a thermos. A thermos has a silver lining, which reflects the temperature of the drink it contains. The temperature is maintained because of the constant reflection that occurs, as well as the insulating benefits that the air space provides between the inner and outer shells of the thermos, similar to an insulating glass unit. Since low-e glass is comprised of extremely thin layers of silver or other low emissivity materials, the same theory applies. The silver low-e coating reflects the interior temperatures back inside, keeping the room warm or cold.

Low-e Coating Types & Manufacturing Processes


There are actually two different types of low-e coatings: passive low-e coatings and solar control low-e coatings. Passive low-e coatings are designed to maximize solar heat gain into a home or building to create the effect of “passive” heating and reducing reliance on artificial heating. Solar control low-e coatings are designed to limit the amount of solar heat that passes into a home or building for the purpose of keeping buildings cooler and reducing energy consumption related to air conditioning.

Both types of low-e glass, passive and solar control, are produced by two primary production methods – pyrolytic, or “hard coat”, and Magnetron Sputter Vacuum Deposition (MSVD), or “soft coat”. In the pyrolytic process, which became common in the early 1970’s, the coating is applied to the glass ribbon while it is being produced on the float line. The coating then “fuses” to the hot glass surface, creating a strong bond that is very durable for glass processing during fabrication. Finally, the glass is cut into stock sheets of various sizes for shipment to fabricators. In the MSVD process, introduced in the 1980’s and continually refined in recent decades, the coating is applied off-line to pre-cut glass in a vacuum chambers at room temperature.


Because of the historic evolution of these coating technologies, passive low-e coatings are sometimes associated with the pyrolytic process and solar control low-e coatings with MSVD, however, this is no longer entirely accurate. In addition, performance varies widely from product to product and manufacturer to manufacturer (see table below), but performance data tables are readily available and several online tools can be used to compare all low-e coatings on the market.

Coating Location

In a standard double panel IG there are four potential surfaces to which coatings can be applied: the first (#1) surface faces outdoors, the second (#2) and third (#3) surfaces face each other inside the insulating glass unit and are separated by a peripheral spacer which creates an insulating air space, while the fourth (#4) surface faces directly indoors. Passive low-e coatings function best when on the third or fourth surface (furthest away from the sun), while solar control low-e coatings function best when on the lite closest to the sun, typically the second surface.

Low-e Coating Performance Measures

Low-e coatings are applied to the various surfaces of insulating glass units. Whether a low-e coating is considered passive or solar control, they offer improvements in performance values. The following are used to measure the effectiveness of glass with low-e coatings:

  • U-Value is the rating given to a window based on how much heat loss it allows.
  • Visible Light Transmittance is a measure of how much light passes through a window.
  • Solar Heat Gain Coefficient is the fraction of incident solar radiation admitted through a window, both directly transmitted and absorbed & re-radiated inward. The lower a window’s solar heat gain coefficient, the less solar heat it transmits.
  • Light to Solar Gain is the ratio between the window’s Solar Heat Gain Coefficient (SHGC) and its visible light transmittance (VLT) rating.

Here’s how the coatings measure up by minimizing the amount of ultra-violet and infrared light (energy) that can pass through glass without compromising the amount of visible light that is transmitted.

measuring types of coatings

When thinking of window designs: size, tint and other aesthetic qualities come to mind. However, low-e coatings play an equally important role and significantly affect the overall performance of a window and the total heating, lighting, and cooling costs of a building.




HOMEOWNERS, BUILDERS AND architects choose to use low-E Glass in their windows for one reason: energy efficiency. Of Course, low-E glass brings other benefits such as increased Comfort and condensation resistance, but the primary function is Improved energy efficiency – whether the driving force is to meet Building codes or to reduce utility costs. However, those who use Low-E glass must be careful in their selection, as not all low-E Glass is the same.

The impact of sunlight

 All low-E glass improves the insulating value of the window in Basically the same way. A thin coating based on either silver or tin Oxide is deposited on the glass. This coating transmits visible Light, but reflects longer wavelength infrared light associated with Radioactive heat emitted by all warm objects. By reflecting this Radioactive heat back into the room, the coating reduces heat loss From the building, resulting in a lower overall heat transfer Coefficient (U or K).


Because of its relative simplicity, there has been a tendency to Compare only the U value for different windows and glazing Options, just as one would do for wall insulation. However, it is Inaccurate to treat a window as if it were an opaque wall, ignoring The effect of sunlight coming through the window. Sunlight is a Significant source of free energy into the building, which can be Either beneficial or detrimental, depending on the building Location. Thus, to accurately evaluate window performance, the Solar heat gain coefficient (SHGC or g) must also be considered, As its impact on energy consumption can be the same or even Larger than that due to the U value. For this reason, modern Window rating programmers such as the European Window Energy Rating System (EWERS) and performance-based building codes Are moving away from considering only U value to formulas Including both U and SHGC.

Comparing performance

 Those who use low-E glass must be aware of both properties, Because although all low-E glass will have a reduced U value, Different products can vary widely in actual performance by having either high or low solar heat gain. In warm climates, where Energy consumption is dominated by air conditioning, windows With low solar heat gain are preferable to reduce cooling Demand. In colder climates where heating is the major concern, High solar gain windows are preferable, as they let in the free Energy of the sun to reduce heating fuel consumption. Special Care must be taken in cold climates, because as the U value is Reduced, the solar heat gain is reduced even further for many Coatings. Therefore, although a low-E glass with a very low U Value appears to be the best choice, it may actually have worse Performance if it has low solar heat gain that blocks the warmth Of the sun and increases heating requirements. For example, the energy rating of an insulating glass unit (IGU)

With U=1.1 W/m2K and SHGC=0.30 is actually worse than an IGU

With U=1.6 W/m2K and SHGC=0.55 for typical homes in the UK and

Denmark, despite the lower U value. The improved insulating level

Is offset by low solar heat gain, which reduces the benefits of Passive solar heating. In conclusion, it is not enough to only look at U value when Selecting low-E glass. The solar heat gain, which can vary widely Between products, must also be considered, based on the local Climate. Window rating systems that include both U and SHGC in A simple energy rating, such as EWERS, is useful tools in making This decision.

Authors & Company Profile

Dr Thomas D Culp is manager of energy policy and New technologies, and Rein de Varies is European Marketing manager, both at Atofina Chemicals Inc, A branch of the oil group Total. Atofina Chemicals Supplies the glass industry with technology for manufacturing low-E coatings. Atofina enjoys leading Positions both in Europe and the world in each of its Three core activities: base chemicals and commodity Polymers, intermediates and performance polymers, and specialty chemicals.




Prashant Thakkar 

Mobile No : 9324789080


51, saidham shopping

p.k. road  Mulund west



Low E glass, E stands for emissivity, was introduced in 1979 and is now a great favorite among contractors. Low E glass works by reflecting heat the same during the winter and summer, using a thin metallic coating on or in the glass. These windows can be installed almost in all regions of the world, but the main factor is related to the building design and window position. As a builder, you can use them for your new projects or even in major renovations, ideally for healthcare facilities as maintaining temperatures is critical in some of these facilities.

 These windows can provide many benefits for the building owner as they can save as much as 50 percent in energy use, provide greater operational efficiency, improved access to daylight and natural views for occupants without increasing energy costs for heating and cooling.

Why choose low-e windows Instead of regular windows?

Low-E windows can provide aesthetic value to building occupants, and they will not reduce the amount of light entering the building while maintaining the natural look of windows. However, windows can also represent a large source of heat gain or loss, because when the right window is not used, it can increase heating costs and A/C usage, making it more costly to operate your building.

Similarly, windows with a poor ability to keep heat in allow warm air to escape the building in the winter, increasing the demands on heating systems. Window manufacturers have developed many new insulating and glazing techniques to improve the performance of windows.

The National Fenestration Rating Council defines five performance areas to consider when choosing windows most suited for your local climate:

  1. Look for Lower U-Factor Values –  These numbers will represent how well a product prevents heat from escaping a home or building. Always look for U-values between 0.20 and 1.20, where lower numbers indicate a product better at keeping heat in.
  1. Lower Solar Heat Gain Coefficient is Better – (SHGC) measures how well a product blocks heat from the sun from entering the building. SHGC is expressed as a number between 0 and 1, with a lower SHGC indicating a product that is better at blocking unwanted heat gain.
  2. Visible Transmittance (VT) measures how much light comes through a product. VT is expressed as a number between 0 and 1 with a higher VT indicating a higher potential for day lighting.
  3. Air Leakage (AL) measures how much outside air comes into a home or building through a product. AL rates typically fall in a range between 0.1 and 0.3 with a lower AL indicating a product that is better at keeping air out.
  4. Condensation Resistance (CR) measures how well a product resists the formation of condensation. CR is expressed as a number between 1 and 100 with a higher CR indicating a product better able to resist condensation.

Not all low-e windows are suitable for all climates, so be sure to choose the right window for the climate where you are building. It is important to note that facilities in warmer climates should install windows with a lower SHGC and those in a cooler climate should install windows with a lower U-factor. Low-e coatings applied to exterior window panes prevent heat gains from exterior radiation; whereas low-e coatings applied to interior windows prevent heat loss.

Manufacturers often offer several low-e coatings with varying degrees of solar gain.

Low-E Windows Benefits and Costs

Windows manufactured with low-e coatings typically cost about 10 to 15 percent more than regular windows, but they reduce energy loss by as much as 30 to 50 percent.

Furthermore, this improvement in the building envelope—particularly when coupled with other strategies that improve the efficiency of the building envelope—ultimately impacts the demands of building HVAC systems. These benefits should be included in evaluating the lifecycle costs of installing efficient windows.

Efficient windows are defined by the climate of the building in which they will be installed. Engineers and vendors are able to make recommendations based on local climate and building orientation. Efficiency improvements to the building envelope directly impact the heating and cooling needs of the building; therefore, HVAC systems should be adjusted accordingly to account for decreased demands on the systems.




Prashant Thakkar 

Mobile No : 9324789080


51, saidham shopping

p.k. road  Mulund west




For a long time, the thermal performance of façades in research buildings has been undervalued because of the large volumes of air being moved through the space. Using the arsenal of strategies currently available to lab designers—such as chilled beams and low-flow fume hoods—air volumes in many contemporary research labs have been reduced to the minimums needed to maintain health and safety, and the performance of the building envelope is having an increasing influence on the building’s energy usage and thermal comfort.

Thermal bridging in building construction is a well-understood phenomenon frequently resulting from structural elements that penetrate through insulation layers and create a path for unimpeded heat transfer. While the construction industry has begun to develop materials and assemblies intended to mitigate this effect, there is little available research documenting the extent of the problem or the performance benefit that will result from the use of these new products. Anecdotal reports suggest that thermal bridges in conventional construction may reduce insulation effectiveness by as much as 40%.1

Payette received funding from the American Institute of Architect’s Upjohn Research Grant to better understand and quantify the impact of thermal bridging on the overall performance of the building envelope. The intent of this research is to bring rigor to the investigation of thermal bridges in commercial construction by using thermal imaging equipment to quantify actual performance of built installations; and use these results along with heat-transfer modeling software to suggest and then analyze performance improvements. Preliminary results suggest that through the use of readily available construction materials and careful detailing, it’s possible to effect a 50% or greater reduction in the impact of common thermal bridges (Figure 1).

In order to understand how façades are performing in the field, we used a thermal imaging camera to determine the R-value and identify sources of thermal bridges in recently completed projects designed by the firm. Teams were deployed to locate and document a range of façades and conditions. Using the methodology tested by Madding,2 we were able to measure the exterior air temperature, interior air temperature and radiant temperature in order to calculate the R-value of the assembly.

We collected thousands of images from visits to 15 buildings. These images were then organized by assembly type, and we noted conditions that were likely to affect performance, such as the transition to a foundation wall or adjacency of a window. Having established a library of data that was primarily focused on thermal bridging, the research team was able to identify typical problem areas thematically. We noted that they fell generally into two categories: one that is related to structure that supports façade and roof systems, and one that is more about material transitions.

Façade systems:

  • Existing building façade renovations.
  • Masonry wall systems.
  • Metal panel wall systems.
  • Curtainwall systems.
  • Rainscreen wall systems.

Transitions and penetrations:

  • Transitions between new and existing façades.
  • Transitions between different wall systems.
  • Transitions between windows and walls.
  • Foundation-to-wall transitions.
  • Roof-to-wall transitions.
  • Roof parapets.
  • Soffits.
  • Roof penetrations.
  • Seismic and movement joints.
  • Louver openings.

Using heat flow simulation software, such as Lawrence Berkley National Laboratory’s THERM, it’s possible to study alternative designs. The research team prepared THERM models of the areas being studied which were calibrated to the performance measured in the field with the thermal imaging camera. With validated THERM models in place, the research team is currently testing the quantitative impacts of potential design improvements.

The THERM modeling platform enables us to probe a detail and effectively measure the changes in heat transfer associated with different detailing or materials selections. Using this approach, we’re able to make quantifiable recommendations for improvements that can then be rigorously evaluated on a lifecycle basis for a specific project.


click to enlarge

Figure 2: Thermal images and details of the three cases studied.  

Case study: Interior spray foam in existing buildings
Preliminary findings in our research show the actual R-value of many façades is approximately 40 to 70% less than the design-intended R-value, so our findings suggest far greater significance than was originally anticipated. As the amount of insulation we specify continues to increase, the conductive losses resulting from thermal bridging will continue to grow as a percentage of the building’s total energy load. Adding more insulation will have a diminishing return as the heat flow through the envelope is increasingly determined by the thermal bridges. Our research suggests that we are near a point now where the key to improving thermal performance lies in better detailing rather than increasing insulation thickness. A simple illustration of this is featured in the renovation case studies of three existing masonry façades.

Spray-applied insulation is once again gaining popularity particularly because of its ability to fill unseen voids and often provide an integral vapor barrier. In the northeast, it’s a particularly popular technology for renovating existing un-insulated masonry façades. Conventional details often call for metal studs to support interior gypsum board, and spray foam is installed between the studs following manufacturers’ recommendations. Unfortunately, this typical installation creates discontinuities at 16-in or 24-in center spacing. While the web of the steel stud is quite slender, they are highly effective heat-transfer devices because of the conductivity of the material and the flanges which provide significant contact area to collect and disperse heat.

Thermal images of three existing building’s renovations revealed dramatically different results. The first case, Building 1, had applied 3-in of insulation, Building 2 employed 2-in of insulation and Building 3 had used 4-in (Figure 2). While hand calculations of the thermal resistance would show the façade with the least insulation to be the poorest performer and the one with the most insulation to be the best, the thermal images revealed a different story. Building 1 had placed the steel studs flush against the exterior construction, resulting in an R-value that was 54% less than the calculated R-value. Building 2 pulled back the studs 1-in, allowing for half of the applied insulation to be continuous and decreasing the R-value by only 16%. As a result, Building 2 was observed to have a higher R-value than Building 1, despite having less insulation. Building 3 took the studs even further back, completely separating them from the insulation and resulting in a simulated R-value that was essentially identical to the design intention (Figure 3).

Our study showed that the continuity of the first inch is critical for the efficiency of the spray foam insulation performance. By simply pulling the studs in-board, even by a small amount, to allow a percentage of the insulation to be uninterrupted, the assembly R-value can be increased by about 70%. In the event that the studs are required to support exterior sheathing, it should be possible to fasten the sheathing using discontinuous shims or spacers so that once again, the majority of the insulation in that outer 1-in layer remains continuous. It’s important to remember that other factors—such as the continuity of the slab through the insulation, or window openings—will often decrease the thermal performance from our ideal conditions. But these too can be improved through careful detailing. The ultimate lesson is that small changes in the design that permit as little as an inch of continuous insulation can lead to dramatic improvement in overall performance.


click to enlarge

Figure 3: Simulations of the three spray foam cases studied.  

Case study: Rainscreen supports
Rainscreens are a common exterior cladding used in the design of contemporary research labs. Because the insulation typically lies behind the cladding and ventilated cavity, but before the supporting stud or structural wall, the rails, hat channels, Z-girts and clips required to support that exterior rainscreen all become thermal bridges. Typically made of highly conductive aluminum, continuous supports such as Z-girts were observed to decrease the R-value of the assembly by 45 to 60% from the design-intended R-value. Rainscreens that employed discontinuous supports, like clips, showed a significant improvement in thermal performance, though the R-value was still determined to fall short of the theoretical design value by 15 to 25%.

Because supports like Z-girts are so widespread in commercial construction today, and have been noted in the industry as common thermal bridges, a number of manufactures have developed alternative solutions. These thermally broken, off-the-shelf products have been developed to meet the structural requirements to transfer the load of the exterior cladding, while not allowing continuous aluminum to pass through the insulation. By limiting the penetrations to only screws and fasteners, and providing insulating pads between metal attachments, we can now achieve the elusive goal of providing continuous insulation. Based on our heat flow simulations, these thermally broken support systems allow a wall to achieve an R-value that is only about 5% less than the clear wall R-value. While each manufacturer has their own strategy deterring the flow of heat, the options that exist give designers the opportunity to find the rainscreen attachment system that works best for their project conditions.

The significant impact observed from thermal bridging suggests a more substantial problem than simply one of condensation risk in a humidified lab environment. The data collected thus far shows that thermal bridging can easily double the conductive heat transfer over what was intended for the design. As we strive to reduce air change rates within the lab environment, we are seeing that envelope heating and cooling loads are an increasingly significant portion of the building energy demand. This research shows that thermal bridging already has a significant impact on the performance of our buildings, and that controlling this path for heat transfer is the key to achieving to truly high-performance façades.

Not surprisingly, the majority of the typical problems identified in this research have centered on transitions between systems and the structural assemblies necessary to support exterior cladding. While many building products exist on the market and it’s easy to implement alternative designs that improve thermal performance, it’s clear that not all manufacturers are equally sensitive to the magnitude of the problem and marketing material must be scrutinized carefully. As we seek to achieve higher-performing research buildings, careful attention and analysis is needed during design to minimize thermal bridges and deliver buildings that perform as anticipated.

1. Morrision Hershfield. (2011). “Thermal Performance of Building Envelope Details for Mid- and High-Rise Buildings” (ASHRAE 1365-RP). Atlanta: ASHRAE Technical Committee 4.4.
2. Madding, R. (2008). “Finding R-Values of Stud Frame Constructed Houses with IR Thermography.” Inframation 2008 Proceedings vol. 9. Reno.

Charles Klee drives Payette’s Research and Innovation Initiative, bringing a detailed understanding of emerging building science and sustainable technologies. Andrea Love leads Payette’s sustainability initiatives. Combining her background in architectural practice and building science, she provides sustainable design knowledge and energy expertise.





Switchable technology has revolutionised the way we see window privacy.

From offices to homes, windows are a widely known architectural device used to bring a number of benefits to a room that would otherwise see isolation from the outside world.

One such benefit is the wonders of natural light; a traditional window brings a snapshot of the outside world indoors without exposing the occupants to the elements.

As the differences in artificial and natural light are generally understood to impact mood, productivity and health, a source of natural light in a room is an important consideration for designers, architects and occupants.

Blind cords can get easily tangled, especially if they are heavily used
Blind cords can get easily tangled, especially if they are heavily used

However, with these considerations come inevitable complications in the form of privacy. The bigger the natural light source supplied, the bigger the requirement for a privacy solution.

Traditional solutions used to solve this privacy burden usually come in the form of blinds or curtains. Often, these solutions bring with them even more complications, requiring the designer to source a solution that meets all the specified requirements, which isn’t always easy.

For example, coverage inconsistencies in blinds may allow sections of light to spill into the room, creating an irregular light level in the room.

Furthermore, it is well known that blinds and curtains bring with them more operational maintenance than many would like; gathering dust, tangled cords, sun damage and even the basic yet unproductive time wasted in opening / closing them.

Switchable technology solves these problems, as well as bringing new and exciting aspects to window privacy. For example, being able to control your window privacy using an RF remote control from up to 25m away is an efficient novelty that you will become very comfortable with.

Unlike the slow and often noisy motors used in remote controlled blind or curtains, our switchable products change in an instant without drawn-out mechanical humming.

Available from Intelligent Glass in the form of either a retrofit self-adhesive film or a rigid glass screen, these core technologies have been integrated into various products that allows Intelligent Glass to proudly boast one of the most diverse ranges of switchable solutions in the world.

Our switchable products work by changing the state of transparency from frosted to clear using electrically charged PDLC crystals.

When the electric charge is passed through the PDLC layer, the crystals polarise, causing them to change state from frosted to clear. This offers clients an incredibly powerful privacy tool that not only looks stylish but can also satisfy a variety of additional requirements.

The versatility of switchable technology is one of the areas we see it excel and due to the nature of PDLC film, Intelligent Glass is able to use its clean room facilities to manufacture a range of switchable products with specialist options, such as sound insulating glass, double glazed units, fire resistant glass or even bi-fold door options.

Switchable technology also has the ability to be integrated into smart home and office applications, putting users more in touch with their environment than ever, allowing them to change the window from frosted to clear by a simple voice command.

Switchable film can be cut to custom shapes allowing for simple installation in places that would not accommodate blinds or curtains easily
Switchable film can be cut to custom shapes allowing for simple installation in places that would not accommodate blinds or curtains easily

What’s more is that many of our switchable products can be combined with both rear projection and touch screen technology, serving a multitude of possible commercial and corporate requirements, but also offering the opportunity to dream up creative and exciting residential applications.

For example, a switchable glass rear projection screen can be used incredibly effectively in a shop window display for merchandising or even as part of a glass partition, creating an innovative presentation screen in an office environment.

But in residential applications, we have seen specialist switchable products vary from switchable glass stairs to gaming projection glass partitions.

Rolls Royce used a switchable glass projection screen to launch the Dawn in Harrods famous store window
Rolls Royce used a switchable glass projection screen to launch the Dawn in Harrods famous store window

It’s clear that for window privacy, switchable technology is the future solution that will eventually replace the messy, high maintenance and archaic privacy solutions we see today.

But for now, you can invest in switchable technology safe in the understanding that it is a highly impressive aspirational product; that is, not many people are familiar enough with it to be expecting it in your property.

So when you make that switch in front of your guests for the first time, you are sure to make a big impact. Not forgetting, of course, the ways in which switchable glass will change your daily life for the better.

Window privacy is an aspect that impacts almost everyone, so it’s important that it is considered appropriately.


Intelligent Glass



The SC95 sliding window and door system from Auk is a superior, high performing sliding solution with aesthetics and design appeal. The product comes with sturdy rollers tested for many cycles of operation and a trusted and proven AluK product worldwide for decades.

This versatile sliding window solution comes with lot of choices and customized options and is an ideal lifetime sliding solution for tropical and hot climate applications in high-rise buildings, individual residences and commercial establishments.

Product features

■ SC95 sliding system is based on non-insulated profiles. The thermal break insulated profile option is available in SC95TT.

■ A 95 mm frame in two track and 143 mm frame in three track, single and double glazed slider with 85 mm interlock profile at centre. Slimmer option of 55 mm interlock is also available.

■ SC95 comes with a glazing bead based solution; hence convenience in glass interchangeability for users.

■ Superior aesthetics with international design appeal: 45 degree join for sashes and 90 degree join for frames.

■ Well-designed sloped bottom track with effective drainage solution.

■ Anodized rail on bottom track for extra smooth sliding.

■ Solid and robust in performance works for very high design wind pressure; a thoroughly tested window system for demanding weather criteria of tropical zones. A tested and certified product as per EN norms for air/water/wind.

■ Possibility of fixed light, fly screen/casement integration.

■ All accessories, fittings, gaskets are AluK branded and tested for performance.

■ Value added features like perimeter gasket for added protection at edges of the window application surface.

■ Single, multipoint locking with flush spring locks, thumb pull lever locks or cremone handles for convenience of usage.

■ This system is adapted for large dimensions with sash weight up to 160 kg of load bearing capacity per sash.

■ Infill glass can be single or double glazed (thickness can vary from 6 to 24 mm).




Prashant Thakkar 

Mobile No : 9324789080


51, saidham shopping

p.k. road  Mulund west



Startling up Aluminum-panel China ties up with Glazingshopee to sell perforated solid panels in India


AVENIER CORNEJO architectes 10 logements sociaux, Paris RIVP
10 logements sociaux, Paris RIVP


Building: Holland Park School Architect: Aedas
Building: Holland Park School
Architect: Aedas


Mail your Requirements to



Prashant Thakkar 

Mobile No : 9324789080


51, saidham shopping

p.k. road  Mulund west





Steel-free Schüco LivIng Alu Inside window system with patented aluminium profile rolling technology for the best thermal insulation efficiency (Uf value of 0.87 W/m²K) | Image: Schüco Polymer Technologies KG
The new Schüco LivIng Alu Inside PVC-U system allows steel-free windows suitable for passive houses to be produced economically on an industrial scale.

The weldable EPDM rubber gaskets rolled in the factory have excellent recovery properties, guaranteeing the best weathertightness and ensuring the windows have a long service life. Schüco is currently the only systems provider with this sealing technology, purchased in Germany from Semperit.


Patented aluminium profile rolling technology

Schüco LivIng Alu Inside does not require any steel reinforcement. Instead, the company uses its tried-and-tested and patented aluminium profile rolling technology, whereby continuous aluminium strips are simultaneously extruded into PVC-U profiles.

They provide the entire construction with a level of stability which almost rivals that of steel-reinforced profiles. It also has excellent heat reflection and can be easily recycled. Prior to welding, the aluminium insulating bars can be milled back simply and quickly using an insulating bar milling machine.

No time-consuming screw fixing for steel reinforcements is necessary. All other fabrication steps are carried out in the usual way and using conventional production facilities. The lack of steel reinforcement also has a positive effect on the unit assembly: the units are lighter and therefore easier to handle.

As this construction is part of the Schüco LivIng system range, fabricators can combine it in a variety of ways and make use of a number of identical main and accessory profiles as well as the matching range of aluminium cover caps.

Picture credits: Schüco Polymer Technologies KG New Schüco LivIng Alu Inside window system with patented aluminium profile rolling technology and additional insulating blocks for passive house suitability in accordance with Dr Feist (Uf value of 0.79 W/m²K).
Picture credits: Schüco Polymer Technologies KG New Schüco LivIng Alu Inside window system with patented aluminium profile rolling technology and additional insulating blocks for passive house suitability in accordance with Dr Feist (Uf value of 0.79 W/m²K).


Weldable EPDM gasket

In close collaboration with Semperit, Schüco has developed and launched the first weldable EPDM gasket for window and door systems. Even after welding, the gasket remains elastic and soft in the otherwise critical corner area, creating a permanent sealing effect.

The fabrication of PVC-U profiles is also made considerably easier by the simultaneous welding of the gaskets. The EPDM gaskets, which are UV-resistant and stable in cold temperatures, provide permanent elasticity for all climate zones in temperatures ranging from -40 to +120°C. Semperit has been granted the patent for this technology.


Design details

The 7-chamber profile construction, the dispensation with steel reinforcement and the specific positioning of the aluminium hinges mean that Schüco LivIng Alu Inside has no thermal bridging.

The centre gasket system with three drainage levels, optimum division of the chambers and its large-volume additional insulation zones for the optimum accommodation of insulating blocks achieves excellent thermal insulation (Uf value of 0.87 W/m²K) – making it suitable for passive houses in accordance with Dr Feist (Uf value of 0.79 W/m²K).

The optimised rebate base geometry allows the optional use of additive adhesive technology. For special design requirements, the system is available with a solid-grey base material. The construction can be coloured with external Schüco TopAlu cover caps, the metallic colours of Schüco AutomotiveFinish and a wide range of foils.

Energy-saving windows in the Schüco LivIng Alu Inside profile system range are 100% recyclable. The PVC-U and aluminium materials are recycled by Rewindo GmbH and used for the manufacture of new profile systems.

The market launch of Schüco LivIng Alu is scheduled for September 2018.