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Hi, I have a brick cavity wall, the cavity is 55mm and was wondering what type of insulation I can use that won’t bridge the cavity and cause problems later on. To my understanding celotex brand insulation shouldn’t touch both leaves of wall. I have seen wool insulation being used, that fill...

I have a boundary wall that I will be building up against and was wondering if damp could get up this wall and effect my cavity wall, a diagram below shows the possible action: Thanks

Hello, I’ve doing an extension which isn’t very big about 8ft by 6ft. Problem is that i need airbricks as i’m having a sub timber floor. I only have one side that i can put air bricks on and it is tricky. As it a small extension, I was wondering if i could put air vents in the floors maybe 2 or...