External Insulation to an external archway

Dec 10, 2010
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I live in a coach house type property and I want to insulate the ceiling of an archway beneath
my property. Directly above this archway, is a bedroom with a laminate floor which suffers from condensation when temperatures drop below freezing. Quotes for external cladding of this area which is 12 sq metres blew the budget. So I was considering using Celotex board
affixed to this concrete ceiling to solve this problem myself. The ceiling is concealed by a lip of brickwork and does not get exposed to rain. If this is a viable solution then what would be the best way to fix the celotex to the concrete ceiling under this archway.


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