How to comply : WER Schemes

For information on obtaining your Window Energy Rating (WER) and comply with Part L, please contact one of the following companies:

Certass Thermal Rating
Register Scheme


Tel. No. 0845 838 8580

BSI Kitemark Scheme
for WER


Tel. No. 0845 076 5602

British Fenestration Rating
Council WER Scheme


Tel. No. 020 7403 9200

For information on Pilkington energiKare™ and becoming a Pilkington energiKare™ Partner, please visit
our web pages where you can download forms or contact our Customer Contact Centre :