A superior technology designed to minimise energy loss through your windows

Building Regulations and Window Energy Ratings

Unglazed Frames

6) WER simulation requirements

Installers may wish to declare up to three insulated glass unit simulations detailing components that will give them a ‘B’ or ‘A’, 'A+' or 'A*' WER. Specifications for each will be required to include details of:
• Outer pane glass
• Inner pane glass
• Mid pane glass (for triple glazed units)
• Cavity dimensions
• Cavity gas
• Spacer bar
• Primary sealant
• Secondary sealant
• Secondary sealant depth

Building Regulations and WERs Page 12

of 18

Thermobar icon
Thermobar logo