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Profile 22 has a complete package of support to help you comply with thermal efficiency legislation and provide your customers with accurate, verified window and door specifications.


Window Energy Ratings provide a benchmark for comparing the energy efficiency of different window systems.

You will find details of the typical WER of each of our products on the individual product pages. However, the rating will differ depending on a huge variety of factors including glazing, options, frames and inserts.

Many projects require accurate, verified WERs. You may also want to check the WER on a certain product configuration to ensure it meets the current building regulations requirements, which stipulate windows must have a minimum WER of ‘C’.

Our U-Comply Self-Help Calculator gives you the means to calculate the WER. The calculator has been approved by BSI as a Notified Body and automatically creates BSI Approved Notified Body Reports for CE marking. If you prefer, you can also contact our technical team for support