I'm currently having a timber framed extension built at the rear of my house. It's north facing. I've gone with a flat roof. Warm roof with 150mm rigid insulation over the beams. The beams are 175mm. The ceiling will be 62.5mm insulated plasterboard below the beams. I've also got 2 large U6...
Thanks Freddy. My builder is big into insulation and air tightness and is going to work on the air tightness of the rest of the house when the extension is finished. I've already put insulated plasterboard on the remaining outer walls of the house.
With regard to my original post, will the...
I have an extension starting soon. It will have a vaulted roof. I'm trying to decide whether to use Fakro U8 quadruple glazed or U6 triple glazed roof windows. The U8 U-value is 0.58 and the U6 U-value is 0.81.
The roof (excluding the roof windows) will have a U-value of 0.15.
The walls...
I am currently planning an extension to the rear of my house. It’s north facing and never gets sunshine. I’ll have two external walls. The walls will have a 150 mm pumped cavity with 62.5 mm Kingspan insulated plasterboard on the inside. My U value will be about 0.15.
The sloping roof will...