Garage upgrade

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hiraethus in reply to @thebrenthamtaffy

I think it depends if the space is going to be heated/lived-in or not. In my case I decided to add a small amount of insulation (50mm PIR boards in the ceiling, 40mm foil blanket in the walls) with an air gap outside the insulation (100mm in the ceiling, 40mm in the walls). Then seal the gaps as best I can inside with foil tape. Seems ok so far.

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thebrenthamtaffy in reply to @hiraethus

Indeed. Even a small amount of insulation and air gap helps to prevent cold bridging. I think the key thing is to have continuous vapour barrier which sounds like you done, so job done. You can't always have the amount of insulation you'd like due to space restrictions.