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Window Energy Ratings

WERsWindow Energy Ratings (WERs) were launched by the British Fenestration Ratings Council (BFRC) and is the UK’s national system for rating the energy efficiency of windows. The result is that it is easier to compare the thermal efficiency of different window systems.


The scheme is recognised within the Building Regulations as a method to show compliance for replacement window installation. With the new Part L regulations and the increased awareness from homeowners about the importance of energy efficiency, registering windows under the WERs scheme is an important differentiator.


In order to achieve a ‘C’ rated unit, or better, window units will require a warm edge spacer. Double R has worked closely with Edgetech for many years and offers Super Spacer as standard in all our WER units. Our units have passed BS EN 1279 Part 3, enabling us to use Argon gas. As a result, we can help Trade Fabricators and Installers achieve ‘A’ rated units.


For more information about WERs and the benefits, please contact Mark Simpson on 01933 443658.

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