Sapa Building Systems has announced that its Dualframe window system has been awarded a category 'A' Window Energy Rating.

Dualframe is the first and only aluminium window that has been awarded a rating under the Government-supported Window Energy Rating (WER) scheme and one of just a handful of windows that have achieved the highest and much coveted 'A' rating.

Sapa's customer Hazlemere Windows, submitted the high specification Dualframe window to BMTrada for rating and underwent external audit. The combination of glazing and high levels of thermal performance of the frames meant that the whole window achieved the highest rating possible. The high rating also means that the Dualframe window meets the requirements to qualify for the Energy Saving Trust's, Energy Recommended logo, which, along with the 'A' rating, gives companies using the system a significant competitive advantage.

Sapa's Technical Director Mark Robinson commented: "The WER scheme means that both we and Hazlemere can now promote our most energy-efficient products to the market place with the independent endorsement of the Energy Rating label which, crucially, is clearly understood by consumers. We worked closely with Hazlemere on this project as well as their glass suppliers Holden Superseal and the spacer bar manufacturers Edgetech. Over the coming months we expect many more of our customers to follow this lead and submit our windows for rating."