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Reply to "Best way to insulate 100 year old unfinished attic ceiling?"
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[quote=Anonymous][quote=Anonymous]Look up spray foam, attic and uninsurable. You could also look up unmortgageable but that’s a mouthfull. Rockwool and you don’t need foam jockeys [/quote] Rockwool and you absolutely, absolutely need vent channels between the insulation and the sheathing. If the roof isn't already vented at peak and eave this may not be feasible. If the roof can't be made to be vented spray foam is really the only solution. The other alternative would be foam on the outside between the sheathing and the shingles, but that would require re-roofing. [/quote]
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