C Cork22 Registered User Messages 17 1 Mar 2025 #61 The windows rep confirmed he can provide a cert for the glass U Value (1.1) but I need to confirm with BER assessor if they can use it to improve the overall U Value of the window.
The windows rep confirmed he can provide a cert for the glass U Value (1.1) but I need to confirm with BER assessor if they can use it to improve the overall U Value of the window.