With the changes to Building Regulations that came into force in June, the focus on thermal efficiency of glazing systems for new-build homes, extensions and renovations has never been greater.
The challenge for architects has been finding the balance between performance, thermal efficiency and aesthetic appeal when it comes to glazed doors, but the SUNFLEX SF75 aluminium bifold door system does just that.
The SF75 features:
- Passivhaus standard thermal performance
- Industry leading weather protection
- Incredibly slender 115mm sightlines
- Exclusive design details not found on any other door system
Advanced thermal performance
With a patented 44mm multi-chamber thermal break, the SF75 is specifically designed to accommodate a triple glazed unit. The result of this advanced engineering is that no aluminium bifold door system on the market can achieve lower U-values that the 0.8W/m²K that the SF75 is capable of – making the doors suitable even for Passivhaus standard builds.
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Superior weather protection
Whilst thermal performance is a theoretical calculation of a door systems capability, weather protection is measured by a physical tests for wind load, air permeability and water tightness in a laboratory – and as you would expect the SF75 is unrivalled in its performance, thanks to its exclusive triple-rebated gasket design and advanced weathered track option.
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Slender aluminium frames
The challenge for architects has been incorporating glazed doors that don’t just perform well, they also actually look good in the finished design as well and the SF75 achieves that. With slender 115mm sightlines and panels up to 1.2m wide and 3.6m high the doors maximise the glass area when closed and provide a seamless connection between inside and out when open.
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Exclusive design features
The SF75 has been designed in Germany by SUNFLEX GmbH, utilising more than 35 years of folding door design. The system includes a number of innovative design features including the patented panel catch and stacking clip technology that prevent the doors from being blown shut in the wind and finger-safe gasket design that keeps little fingers safe as the doors are closed.
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