There appear to be two guidelines when insulating between the rafter space on a pitched slate roof. One guideline says to leave a 50mm gap to the top of the rafter the other guideline says fill to the top of the rafter. Which is right?
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Insulation
- Thread starter Jacet
- Start date
Leave a gap for air circulation!
John
John
Depends if you have a breathable membrane or not.
Yes I have a breathable membrane in place. Stages shown below.
http://blog.celotex.co.uk/technical/pitched-roof-application/
The airgap is above the insulation and membrane.
The airgap is above the insulation and membrane.
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