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Edgetech Europe GmbH

Gladbacher Str. 23, 52525 Heinsberg
Telephone +49 2452 96491-0
Fax +49 2452 96491-11

Hall map

glasstec 2018 hall map (Hall 17): stand C61

Fairground map

glasstec 2018 fairground map: Hall 17


Joachim Stoß

Managing Director

+49 (0)2452 96491 0


Johannes von Wenserski


+49 (0)2452 96491 0


Our range of products

Product categories

  • 02  Glass processing and finishing
  • 02.11  Auxiliary products
  • 02.11.05  Spacers

Our products

Product category: Spacers

Edgetech Super Spacer® - Warm Edge Technology with flexibility plus

Freely mouldable, aesthetically adaptable and suitable for manual or automated processes, the Super Spacer® Warm Edge spacer is flexible like no other. Proceed with safety towards a sustainable future alongside Edgetech, the innovation leader!

Modern spacers for thermal isolation of the edge seals of insulating glass windows are the missing link for energy efficient windows and facade systems. Passive-energy houses are unthinkable without the minimisation of heat losses using warm edges. In more and cases, spacers also abandon their marginal position and are put into focus by architects, builders and glass processors interested in sustainable and economical solutions. The type of materials used and their structure in particular must be evaluated when choosing a suitable system, because of the significant requirements in thermal insulation properties, operational capability and processability.   

The fully flexible spacer system
Edgetech Super Spacer® is the world’s first spacer system made from flexible structural foam with integrated drying agents. Compared to conventional aluminium spacers, the non-metallic material composite is impressive thanks to an exponentially lower thermal conductivity. The glass keeps the same temperature over the entire surface, the level of radiating cooling through the surfaces of the windows is reduced and the dew point shifts downwards, which reduces by up to 70% the formation of condensation in the border area compared with insulating glass windows without spacer. To a large extent, the flexible foam matrix of the Super Spacer® is moisture permeable. Therefore the high portion of drying agents can absorb moisture quickly. The combination of the multilayered vapor barriers in the spacer and the outer sealant helps seal against moisture from the outside and gas leakage from the inside.  

The advantages of the Super Spacer®
• Low thermal conductivity
• More durable edge seal
• Moisture permeable, flexible foam matrix
• Higher portion of drying agents absorbs moisture
• Pleasing aesthetics
• High quality silicon for better resistance to ozone, UV lights and oxidation
• Very good values for gas leakage rates in accordance with EN 1279-3
• Optimum value for energy efficiency (Ψ values to 0.028*)
• More comfort and well-being near the windows
• Outstanding resistance to condensation and forming, as well as colour stability
• Extreme durability for long-lasting performance
• Higher levels of productivity thanks to simple processability (only three process steps)
• North America ASTM E2188/ E2189/ E2190
• Europe EN 1279
• Canada CGSB 12.8
• CEKAL - certified for France
• P1 Industry standard USA

Super Spacer® Premium/ Premium Plus
The flexible spacer, Super Spacer® Premium, made from silicone foam provides maximum thermal insulation of the edge seal for insulating glass assemblies. Thanks to the integrated drying agent and lateral adhesive, the structural foam spacer significantly facilitates the manufacturing of insulating glass assemblies (IG). Available in heights of 4.7 mm (Premium) or 6.5 mm (Premium Plus).

Super Spacer® T Spacer™ Premium/ Premium Plus and
Super Spacer® TriSeal™ Premium Plus
These flexible spacers made from silicone foam fulfil the most demanding commercial requirements, including Structural Sealant Glazing (SSG). The triple seal system Super Spacer® T-Spacer™ is fitted on the side with a pressure-sensitive acrylic adhesive, which enables highly efficient automated processing and the application of the sealant (polyisobutylene and edge sealing). Available in heights of 6.3 mm (Premium) or 7.3 mm (Premium Plus). The Super Spacer® T-Spacer™ forms the basis for the triple seal system Super Spacer® TriSeal™ Premium Plus, which is fitted with a polyisobutylene sealant for easy manual processing at the factory, in order to reduce gas leakage rates and vapor barrier.  A UV stable silicone sealant is required for the structural sealant glazing.

Please contact us for more information:
* Super Spacer® Premium made from structural foam includes three panes of insulating glass with hot melt sealant; Source: Bundesverband Flachglas e.V.  (German Flat Glass Association)

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Company news




Jul 3, 2018

Siemens corporate headquarters: Showroom displaying state-of-the-art glass technology

Petschenig glastec GmbH supplied 7,000 m2 of UNIGLAS SUN insulating glass units with Edgetech Europe GmbH Super Spacer® spacers and 1,000 m2 of special glass units for the glass façade of the sustainable flagship project in Munich. Ultimately 103 different glass structures and 900 different glass formats were put together to meet all requirements in terms of its energy efficiency, thermal insulation, solar protection, fire protection, security against eavesdropping or bullet-proof properties.

Showcase project for the Smart City 
The desert city of Las Vegas is exemplary in terms of its water saving, the city of Munich networks decentralised energy producers in a virtual power plant, Vienna is a test region for intelligent technology support for the elderly, smart cities are taking shape worldwide. Against the backdrop of demographic change and efforts to improve the quality of life in addition to the careful use of resources, the concept constitutes more than mere city marketing. Siemens AG has also committed itself towards the realisation of smart cities, in which intelligent technologies and the internet of networked things should decisively support a sustainable future. A key role can be seen in the buildings, which are responsible for up to 40% of the energy consumption demand. Siemens has set an example by announcing that it will be the world’s first industrial corporation to achieve a carbon neutral footprint by 2030. It therefore made sense to announce ambitious sustainability goals for the new corporate headquarters in Munich as well. 

Sustainability in large numbers 
The three essential demands placed upon the building were that it should be open, innovative and save resources. The major challenge faced by the architects was to erect the new Siemens headquarters at the old site around two existing buildings on the Wittelsbacher Platz, one of them was the listed Ludwig-Ferdinand-Palais built by Leo von Klenze in a classical style in 1825. The ensemble of light-flooded buildings designed by Henning Larsen Architects with its five green courtyards has pulled off the difficult balancing act of combining tradition and modernity - in terms of the urban planning, but also architecturally. The atrium was consciously designed as a meeting place with a café and restaurant. The Siemens Passage that is largely accessible to the public connects the old part of the city with the Kunstareal (art district) in Maxvorstadt.

According to Siemens, the new head office consumes 90% less electricity and approx. 75% less water as a regular building. More than 7,400 energy-efficient LED lamps have been installed and more than 30,000 data points are connected to the building automation system. Thus energy consumption is reduced by some 25% solely with the aid of daylight sensors and presence detectors. The photovoltaic system covering a total area of 1,300 m2 provides almost 1/3 of the required energy. The rainwater is also collected on the roof. On average, 1.5 million litres per year are used for toilet flushing, outdoor irrigation and air conditioning of the buildings. The latter statistic reveals probably the most impressive figures. Every hour, 100,000 litres of water flow through 70 kilometres of pipelines and, depending on the time of year, provide heated or cooled rooms, while the energy is supplied by geothermal probes.

Performance mix comprising 140 different glass units 
The glazing also makes a considerable contribution towards the sustainable energy balance of the new Siemens headquarters. For instance, all the facades facing the inner courtyards consist of solar selective thermal insulating triple glass and are inclined by 5% so even more natural daylight can flood the offices and courtyards than in vertical orientation of the glasses. The responsible façade specialist Strabag Metallica installed a total of 16,000 m2 of element facades during the three-year construction period. The Viennese glass processing company Petschenig Glastec supplied the entire 8,000 m2 of glazing. 7,000 m2 of it were flat and curved UNIGLAS SUN solar control insulating glass elements. Obviously, despite all the transparency involved, safety was not neglected, so another 1,000 m2 consisted of bullet-proof and tap-proof glass units, among other things. By way of a final result the entire glass façade appears extraordinarily homogenous across all parts of the building. On closer examination, it is a showpiece of state-of-the-art glazing technology. 103 different glass structures were produced by Petschenig glastec to meet the high thermal insulation, solar protection, fire protection and security requirements. The constructional parameters of each individual pane structure were calculated, which were subsequently fed into the simulation for the entire curtain wall at Strabag Metallica. The glass façade in Munich ultimately achieved an excellent heat transfer coefficient of 0.9 W/m2K. There were a number of reasons behind Petschenig glastec’s decision to chose the Edgetech Super Spacer® Warm Edge System for its triple glazing units. “On the one hand, we were able to guarantee the required energetic performance without any problems for all windows and façade elements. On the other hand, the production on our Super Spacer® line has significantly optimised the project logistically and in terms of meeting the deadlines," explains Managing Director Hanspeter Petschenig. The sorting, bending, desiccant filling and offline butyl extrusion as needed with rigid spacers bars is no longer required thus also eliminating many possible sources of error. The flexible Super Spacer® spacers are fed to the applicator in various widths as programmed from the reels. Although the production and provision of the different insulating glass units in the correct positional sequence remains a logistical challenge for the façade constructor or at the building site, the high degree of automation involved simplifies these tasks as much as possible with today’s technologies.

You can obtain additional information about the Super Spacer® systems and the Warm Edge Technology of Edgetech here:


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Jul 3, 2018

Edgetech Super Spacers® discreetly remain in the background

Aesthetical or functional? A spacer must meet both objectives when inserted into a demanding glass façade. The Timmerhuis in Rotterdam is a current example of this.

The question of "warm edge - yes or no?" plays a key part when choosing a spacer. In addition to the technical functional principle and their energetic performance, spacers also differ in terms of their aesthetical impact. Perforations, which are required to ensure the effectiveness of the drying agent in many hollow profiles, can also disturb the visual impression to the same extent as glossy, light-reflecting stainless steel surfaces. “This kind of spacer sometimes stirs up a lot of emotions," explains Axel Hinderberger, managing director of the facade constructor that goes by the same name in Aalen. “The design of the glass edge seal may never be neglected during the coordination meetings, due to the fact it is definitely too late to conduct basic discussions concerning the appearance in the glass cavity during the acceptance following inspection", he continues. Horst Matias, Technical Sales Engineer at Edgetech Europe in Heinsberg, confirms the desire for homogeneous, smooth surfaces: “The visible side of a spacer is typically uniformly matt and is non-reflective. As soon as the insulating glass unit is inserted in the frame, Super Spacers completely disappear out of view due to the fact only the frame colour is reflected in the glass. Thanks to these properties, curved and flat glass units can also be installed harmoniously next to one another."

Curved glass in the Timmerhuis in Rotterdam
Döring and Edgetech jointly participated in one of the flagship projects of recent times: the Timmerhuis, designed by Rotterdam's urban planning experts OMA (Office for Metropolitan Architecture) in Rotterdam. The “greenest building in the Netherlands” unites the city administration, apartments, offices and the Rotterdam city museum and is an architectural bridge to the listed historical city hall. Originally, the design was based on the idea of raising offices and apartments on to a floating "cloud of glass and steel" above the Civic Centre on the ground floor. The curtain façade with triple insulated glazing provided by Saint-Gobain Glassolutions reflects the sky above Rotterdam. The stacked units almost seem provisional in some areas, as if someone had interrupted their computer game during its construction. This impression is intentional. The Timmerhuis has a modular design, more an object that is continually developing than an architectural statement. Fortunately the Timmerhuis has found a worthy tenant in the form of the Museum Rotterdam that has moved into the building in place of the Civic Centre.  The convex, curved glass elements of the entrance front form a soft, organic transition to the ground. 14,000 m2 in total were supplied by the Saint-Gobain Group for the façade. The glass panes with a flat design were received from the Objektzentrum Radeburg, Döring delivered 1,200 m2 of curved, double-glazed safety-barrier glazing SSG CLIMAPLUS  for the glass façades in the lower area. The elements are curved with a radius of 1,000 millimetres and a bending angle of 72 to 163 degrees. They are made with Super Spacer® spacers and are individually recessed in aluminium profiles.

Simple handling, precise application
Super Spacer® spacers provide important features for the simple manual processing of free forms and curved glass panes, as well as an aesthetically flawless end result. Thanks to the low edge seal height, Super Spacer® spacers can also be used with narrow frame profiles and low glass insets. The flexible material additionally facilitates perfect mitring at the corners. The polyisobutylene seal is concealed in such a way that even after a period of many years it cannot migrate from the edge seal into the sightline, and the lateral adhesive is also applied parallel to the glass edge without any overhangs.
Joachim Stoss, CEO of Edgetech Europe, particularly delights at the fact that Döring and Edgetech have been "Partners in Glass" for many years: "The team at Döring knows how the Super Spacer can be used and how to manually apply it precisely after so many projects."

You can obtain additional information about the Super Spacer® systems and the Warm Edge Technology of Edgetech here:

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Jul 3, 2018

Super Spacers® as part of "The Opus" dream project

Project developer Omniyat calls "The Opus" tower "the building that never sleeps". The magnificent arrangement of the vibrant building envelope pushes the limits of what is technologically feasible with advanced engineering evident in the end result. Edgetech Super Spacer® TriSealTM are also installed in the massive 3D puzzle in downtown Dubai.

Zaha Hadid’s vision: a floating cube that has been hollowed out from the inside
"We do not build nice, small buildings," Hadid told the British Guardian in 2013, referring to mundane, rectangular buildings. "The Opus" at the world's most popular architectural playground in the Burj district of Dubai, Zaha Hadid had the vision of a cube hollowed out from the inside for the 21 storey building and that is seemingly floating above the ground floor. And indeed, like an ice cube that is melting away under the hot desert sun, "The Opus" also leaves people in the building’s interior with a free view of the breathtaking architecture of the surrounding area: of the Dubai Water Canal, the new opera house or the Burj Khalifa and the Dubai Mall. The construction work commenced in 2012 and the final work on the building envelope was completed in October 2017. When the interiors complete, it will accommodate a 5 star hotel, restaurants, office space and luxury apartments.

“The Void“: An engineering masterpiece
After Zaha Hadid unveiled the spectacular design in 2007, the "Dream Tower" immediately landed on the top ten wish list of leading industrial companies. Daniel Zhang, Edgetech/Quanex Sales Manager for China, explains the fascination it held for architects and façade builders: "The Opus" was a Black-Box project. At the start no-one was able to say how the organic glass façade, based on Hadid's ideas, covering an area of some 6,000 square meters, could be made to completely appear as a flowing surface. The building as it now stands is an all-encompassing, engineering masterpiece. Each of the 4,544 glass units for the dark blue glazed void is a custom-made individual item, and what’s more the vast majority of them consist of curved double-glazed insulating glass units with irregular shapes. This meant automated application was out of the question for our range of spacers. Nor could a rigid spacer be used, which does not bend without kinks and which certainly cannot be freely moulded. Only a flexible spacer was able to meet the requirements in terms of impermeability and appearance. In hot climates in particular, a warm edge must achieve outstanding levels of performance over decades in order to hermetically seal the space between the panes. Due to the thermal interaction between hot sunlight and shadows, strong mechanical forces permanently act on the edge compound due to the movement of the glass.

By day, the façade reflects the sky, sun, water and the futuristic architecture. At night, on the other hand, "The Void" that is illuminated with spectacular LED installations to connect the building with the pulsating metropolis. To this end, LEDs that can be individually controlled were installed in each glass panel. The transparent façades of the two rectangular reinforced concrete towers are made of double-glazed insulating glass with a UV coating and printed coloured layers of different sized dots. On the one hand, they imbue the façade with a unique vitality, on the other hand, they reflect the light and thus reduce the levels of solar input and glare. Teams from different specialist disciplines such as façade builder Alu Nasa, consultants from Koltay Façades in Dubai, Pilkington Glass, the insulating glass manufacturer Shennanyi and also the spacer supplier Edgetech have contributed their collective expertise to the realisation of the "Void". The lower end of the void is bordered by a freely formed glass roof over the multi-story atrium. At the upper end of the building, at a height of 71 metres, the towers are connected by a nearly 38 metre long, elegantly curved and earthquake-proof bridge, made of curved double-glazed insulating glass units, double curved aluminium frames and steel. This part of the building weighs 1,000 tonnes on its own. 3D modelling that is accurate down to the last millimetre of the primary and secondary steel construction, curved aluminium profiles, fastening elements and glass units constituted the basis for all suppliers involved in the project. More than 10,000 individually curved aluminium profiles were supplied from Denmark and the Netherlands, the glass units were produced in three factories in China, and ultimately the entire 3D puzzle had to be precisely pieced together on the construction site.

The perfect glass mix was a long time in the making 
Even the selection of the right glass was preceded by a lengthy decision-making and modelling process. By contrast with flat panes of glass, no technical values exist in relation to the compressive strength, tensile strength and flexural strength for curved panes of glass. Due to the fact the glass curvature and glass thickness affect the flexural rigidity for their part, the solar thermal loads and the maximum energy absorption up to breakage, the minimum bending radii as well as the maximum bending angles for each insulating glass unit had to be calculated. In addition, the glass structure had to ensure that the solar input remained below a certain limit to prevent dangerous levels of reflected radiation that could lead to thermal breakage on the glass façades opposite. In the end, a mixture of a few flat and single bend glass units, as well as hot and cold-bent double-glazed insulating glass units was installed. Due to the fact that in a hot climate such as prevails in Dubai, the thermal load for glass is much higher than in more temperate zones, and the dark glass units also absorb a great deal of energy, the glass should be as tempered as possible - a process that had not yet been industrially tested for curved insulating glass units up to this point in time. Chemically tempered, hot-bent glass was too expensive. Therefore the insulating glass manufacturer Shennanyi developed a technology specifically for the combined hot bending and tempering of the glass whereby the insulating glass units are heated to 700°C, tempered following the moulding process and cooled with the aid of compressed air nozzles to increase their breaking strength. The units consisting of 8 mm Low-E (coated on the inside), a 16 mm cavity between the panes, 6 mm clear glass, a 1.52 mm PVB colour laminate and once again 6 mm of clear glass were constructed by Pilkington China. In order to save costs, the number of hot-bent elements was reduced to a minimum and as far as possible cold-tempered tempered insulating glass was used, and thus one which could be manufactured economically.

You can obtain additional information about the Super Spacer® systems and the Warm Edge Technology of Edgetech here:

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About us

Company details

The flexible spacer for more energy efficiency in buildings
The flexible, foam-based spacer system, Super Spacer® from Edgetech, acts as an energy-efficient warm edge in insulating glass windows. They greatly reduce the loss of energy towards the outside, help prevent as much as possible the formation of condensation and contribute to the long life of windows. Every year, about 300 million meters are sold worldwide in more than 90 countries with different climates, from Alaska to Dubai. Because of the flexible materials, Super Spacer® can be shaped easily, is aesthetically pleasing and is suitable for both manual and automated manufacturing processes.

Innovation leader and customer orientated for more than 30 years 
Edgetech is one of warm edge technology’s pioneers and thus also a pioneer in sustainable architectural products. Super Spacer® spacer systems have been improving the performance and energy efficiency of insulating glass systems worldwide since 1989. In addition to innovation, greatest possible customer focus and great service force, constant quality offensives and professional marketing have significantly contributed to success.

Edgetech Europe GmbH – strong partner of insulating glass manufacturers Edgetech Europe GmbH, located in Heinsberg Germany, is a fully-owned subsidiary of Quanex Building Products Corporation, an industry-leading manufacturer of components sold to Original Equipment Manufacturers (OEMs) in the building products industry. Quanex designs and produces energy-efficient fenestration products in addition to kitchen and bath cabinet components, with its head offices in Houston, Texas. Based on turnover Edgetech/Quanex is the world‘s largest manufacturer of spacers. Edgetech Europe GmbH is a sales location for the markets in continental Europe and one of the three worldwide Edgetech production plants, with a total of 450 employees and 16 extruders. You can obtain additional information about the Super Spacer® systems and the Warm Edge Technology of Edgetech here:

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