Dormer crawl space

Leon

Registered User
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Hi All.
I'm looking for a second opinion. Man who's gonna insulate my house suggested to install bubble foil too. Foil would be fixed only on the rafters all the way from the knee wall to the joists an. Reason to put this foil on is to stop the drauths in the crawl space and bedrooms upstairs. I have a vents in soffit around the house and they let it a lot of air into the crawl space. Knee walls are insulated with a 100mm fibre.

Is this bubble foil a good idea ?
 
Last edited:
Those vents are there deliberately to ventilate the crawl space and ensure you don't get damp/ mould problems down the line.
 
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