breather membrane

I'm currently in the process of insulating my garage (cold roof). I'll be using a Moll Intello vapour control membrane after the insulation and before battens and plasterboard. The boiler is currently located on the brick wall and as such can't be wrapped (sealed) with the membrane. Is it...

Hello! I'm currently removing a rotten bay from the exterior as the render has failed and the laths behind are totally rotted through. 1. Does anyone know what the black sheeting is called and what the modern version is called these day? That's failed and needs replacing too. 2. I'm planning...

I'm putting corrugated bitumen sheets on the roof of a garden building. The roof is a pent design, with a pitch of 10 degrees, and is boarded with 18mm osb. Is it recommended to put a breather membrane on the osb before laying the bitumen sheets? Thanks

Sorry, this is a nested question.. Old suspended 1960s floor comprises: 3" void, 3" timber heights (sat on engineering bricks, levelled with cement), floorboards. Joist spacing sees 440mm approx inbetween joists. Joists are 2.5" wide. Goals: - insulate between timbers - UFH: install over tray...