insulating existing house from exterior
nbi
| Posted in Energy, Heating & Insulation on
I have a house built in the 40’s with little to no insulation on a north facing wall. I am stripping the siding off and replacing the windows. What would be the best way to add insulation to the walls? The interior is covered with expensive wall paper so from the inside is not an option.
Since it has skip sheathing on it, I thought I could remove some here and there and install open or closed cell foam from the outside.
The homeowners goal is to get a high r-value, which is why I ruled out the conventional blown in cellulose.
Any thoughts would be greatly appreciated.
Thanks.
Replies
I have in the past foamed an entire house from the outside. Trimming it up if they over-fill can be a PITA, and god-forbid they ever want to do any remodeling on the walls where the foam is stuck to the inside surfaces...but it works well.
I'm not sure you could just pull some sheathing off here and there for spay foam. We stripped the house all the way down. I don't know if there are any working "pour-in" foams. The ones from the seventies were a total failure.
Steve
The foams expand and could blow the walls off inside. Just drill holes and blow cells or chopped FG
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I think Tiger Foam has a low expanding cavity filling foam. Check out their web site. If they do maybe a local foam insulation contractor has the same material. I think I saw in an earlier discussion on foaming from the outside someone giving a web site of a company that has franchises nationally.
http://www.retrofoam.com/
That's it.