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A superior technology designed to minimise energy loss through your windows

Benefits of Thermoflex Warm Edge Spacer and Energy efficient windows for Specifiers, Architects and Builders
Manufacture superior glazing units with Thermoflex warm edge spacer
Thermoflex Warm Edge Spacer for Window Installers and Fabricators
Homeowners can reduce heating bills with Thermoflex energy saving windows

Building Regulations and Window Energy Ratings

UK Building Regulations

Standards for thermal efficiency must be met for UK Building Regulations

UK Building Regulations dictate that all new and replacement windows must meet minimum requirements for thermal efficiency. The current requirement is that windows attain a whole window U-value of 1.4 Wm²K or better, or a Window Energy Rating (WER) of 'B' or 'A'.

A combination of different factors contributes to improved thermal efficiency in a window unit. Calculations for energy ratings, therefore, take these factors into account and consider the glass type, the components used in the sealed unit, the structure, and the window frame.


Building Regulations & WERs Page 1 of 3

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