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Spray Foam Insulation adding to attic
Last Post 13 Jan 2012 11:13 AM by junkman. 0 Replies.
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13 Jan 2012 11:13 AM

Going to have attic insulated with Demilec Open cell foam to roof trusses, do I need to have the existing blown insulation removed ? Also do I need to have an Intumescent Coating applied to this exposed foam that will be sprayed?
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