Insulating a concrete loft

johng2703 · 14 Sep 2015

Hi,
am renovating my house, the construction is basically a big concrete box with the roof trusses (and roof) propped off of it. So my loft floor is basically a smooth concrete slab. There is absolutely NO insulation in the loft space at all and I want to insulate it (as a cold loft).

I am worried if I use rockwool that I may get condensation problems as the concrete 'breathes' ? or do I use a rockwool with a paper vapour barrier on one side?
I've also been looking at the silver foil insulation and wonder if I can just lay this straight on the concrete?

Suggestions, hints or help most welcome

thanks

John

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Insulating a concrete loft

johng2703

DIYnot Local

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