Insulating garage roof under bedroom

Discussion in 'Builders' Talk' started by MalteseDIY, Dec 22, 2019.

  1. MalteseDIY

    MalteseDIY New Member

    Hi,

    We had an extension to our house and finishing some of it myself. Part of the extension was a storeroom/garage on the side with a bedroom above it. I know building regs want Rockwool, Celotex and pink board to finish but I am wondering should I:
    • Cut the Celotex to size and fit between the joist with the rockwool above it also?
    or...
    • Put the Rockwool between joists and then sit the celotex sheets across joists?
    I have read on a couple of other sites about being careful of condensation if not enough space around Celotex etc so am a bit confused what best approach is. Any tips would be really appreciated?

    Cheers,

    Matt
     

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