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Insulating attic

Posted on 1/7/24 at 6:14 pm
Posted by In The Know
City of St George, La
Member since Jan 2005
6360 posts
Posted on 1/7/24 at 6:14 pm
Looking to insulate the attic in prep for summer. Need advice- does the spray stuff professionally done work well? It gets so damn hot upstairs and I know the insulation isn’t adequate. It’s a big job or I’d do it myself. Figure I’ll get a better rate now then later- what say you?
Posted by LSUtigerME
Walker, LA
Member since Oct 2012
3933 posts
Posted on 1/7/24 at 6:59 pm to
quote:

does the spray stuff professionally done work well?

When you say “spray” do you mean foam or just blown-in insulation?

It’s very difficult to justify spray foam IMO. R-38 blown in has worked very well for me and is significantly cheaper.
Posted by CrawDude
Baton Rouge
Member since Apr 2019
5692 posts
Posted on 1/8/24 at 10:03 am to
If adding traditional insulation, you also may want looking into sealing attic leaks LINK, to the conditioned area below, prior to adding insulation - that would not apply to spray foam insulation.

Though I would likely go with spray foam insulation with new house build/construction, I would not retro-fit to an existing home. Sealing + supplemental fiberglass/celluose insulation would provide dramatic improvement at a much lower price point.
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