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Insulating studio/workshop roof

Discussion in 'Your Projects' started by ClareG1964, 9 Jun 2020.

  1. ClareG1964

    ClareG1964

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    Hi, I'm renovating what is actually quite a substantial outbuilding (used to be a bookbinder's studio). It has no insulation yet. The roof is pitched, and I want to fit insulation between the rafters before attaching plasterboard to them. My question is: do I need to leave a ventilation gap between the insulation and the underside of the roof sarking felt? And should I attach a vapour barrier? Are those things necessary in a studio that won't be used every day, so not much build up of condensation, etc (though will be heated occasionally in colder weather)? Thanks!
     
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  3. IT Minion

    IT Minion

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    You've posted in the wrong place, which won't help the number of replies.

    In short, yes, leave the ventilation gap and keep the vapour barrier. When you're in there you're breathing out water vapour, so you will get it condensing on the roof if you don't have the vapour barrier.
     
  4. ClareG1964

    ClareG1964

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    Ah, sorry, thought I'd posted in "Your projects" - I'll investigate and move the post! Thanks. Did wonder why there were no responses!

    OK, so ventilation gap and vapour barrier needed. Thank you.
     
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