PassivGlas™ Ultimate is an advanced fenestration technology that involves creating a highly insulating retrofit unit by enclosing a PassivGlas™ VIG with a thermally broken spacer bar airgap and the addition of a fully toughened glass.

Unlike traditional double-glazed windows, PassivGlas™ Ultimate use air alongside the VIG, to further minimize heat and acoustic transfer through the unit.

Features and benefits:

PassivGlas™ Ultimate can be manufactured into unit thickness of 20 mm and upwards, to be utilized into existing frames, allowing endless retrofit possibilities.
Offers reduced U-values to as low as 0.47 W/m²K, whilst maintaining up to 71% light transmittance.
The minimum glass unit thickness available in PassivGlas™ Ultimate is 20 mm with a weight of 30 kg/m².
PassivGlas™ Ultimate can be backed with various glass combinations, including obscure, self-clean, solar control etc., making it a flexible option for specifiers to meet their performance requirements.
PassivGlas™ Ultimate can achieve an R_w: 41dB (UKAS accredited)
PassivGlas™ Ultimate can be backed with various laminated products to comply with Building Regulations Part Q, Part O, Part E and Part L.
PassivGlas™ Ultimate can be manufactured to house various magnetic or electronic internal blinds.
PassivGlas™ Ultimate is an ideal solution when existing frames are in perfect working order but require an enhanced overall thermal and acoustic performance.
Can be leaded to match existing or new designs.
Can be fitted with Duplex spacer bar systems, where required.
No evacuation port to impede view
Appearance of a standard IGU but with Triple glazed performance.

Overall frame U-values as low as:

Aluminium 0.8 W/m²K.
Steel (thermally broken) 1.2 W/m²K .
Timber 0.78 W/m²K.
PVC-U 1.0 W/m²K.

Testing on safety glazing material