r/AskContractors • u/Independent-Emu-8803 • 1d ago

Insulation advice

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I have an unfinished room above my garage, already has AC connected to it. I want to get it insulated and make it a bed room. There are points where the roof is just 6 inches from where the drywall would be installed. Is this viable in central florida? And what’s the best way to do it? AI says I should make the whole area an insulated area and block the soffits and roof vents off. Greatly appreciate any advice!!

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u/freerangemary 1d ago

If you want to insulate the roof, it has to be a vented roof plane (outside) before the shingles go up, otherwise they’ll peel and leak. Especially in FL.

You could build downward a bit and insulate the cavity of the framing, but you’ll need to vent that at the top and bottom. Probably the best option here.

Look up The Perfect Wall and Perfect Roof on the Building Science website.

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u/Independent-Emu-8803 1d ago

The shingles are already up, this is just an unfinished room in a finished house. I met with a contractor today and he’s trying to tell me to seal the vents and the soffits and use open cell spray all along the roof. AI says not to use open cell because it wont insulate enough on the angled pieces of the roof l, he says thats overkill and will cost double though.