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Our products have a comprehensive 10 Year guarantee, which includes the hardware (handles, hinges, locks)


Window Energy Ratings

Aug 04 2020

Window Energy Ratings (WER) is a scheme first launched by the BFRC (British Fenestration Ratings Council) and Certass launching similar schemes soon after. A WER provides independent verification of how energy-efficient your windows are. The rating system is based on a scale of G to A+, with A+ windows being the most energy-efficient.

Build Check is an approved Independent Agency (IA) for the BFRC (British Fenestration Ratings Council) and as such, we employ a number of BFRC accredited simulators who are qualified to calculate the energy performance of windows.

We can offer simulation based WER calculations as an alternative to physical testing (e.g. hotbox testing) which gives window manufacturers the advantage of being able to alter product designs to achieve the desired performance criteria in a simple and cost-effective way. On completion of the simulation, you can use the results as part of the certification process to gain an energy rating for your products.


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To use our design and manufacturing skills to provide quality and value for money in our products, which in turn will give long-term enhancement & maintenance free to your property.

We supply & install our products in both PVC-U, Aluminium, Composite and Timber.

We have therefore built up a loyal customer base to whom we have supplied and fit throughout the south-west.