0.8 W/m2K U-value windows for ultra low heat loss


Reduced CO2 emissions
UK's first zero carbon home compliant PVC-U casement window


Achieve up to Code for Sustainable Homes level 6 with a traditionally styled high-performance casement window – ideal for replacement and newbuild installation and well ahead of Part L (England and Wales) or the Part J Technical Standard (Scotland).

Triple glazed and delivering a solar factor "g" of 0.6 W/m2K, the new Sheerframe HED (Homogenous Energy Dynamics) window is PAS 24 : 2012 security kitemarked – and makes zero carbon housing a reality today.

Like all Sheerframe windows and doors it is manufactured in the UK using lead-free calcium organic stabilisers, and is available via a network of specialist fabricators and installers.

Other zero carbon window styles are available including tilt and turn and inward opening.


Click here to download a leaflet and learn more about Sheerframe's ultra low U-value windows.