Regarding spray foam insulation.
I bought an 1853 Cape. On the second floor the ceilings were raised, new colar ties and rafters installed then spray foam insulation. The company rep advised I do the same for the basement/crawl space by spray foaming the stone foundation. There is only a small, 15X15 foot, 5' high basement under the main part of the house. The rest is crawl space, mostly on ledge. I want to have them put plastic under the first floor boards then spray foam under that. A lot of cold air comes up through the floors and I used up almost $5,000 in propane last winter. My carpenter feels the foundation should not be sprayed because it will weaken the foundation and make any future repairs too difficult. Please advise as to the most energy efficient and effective way to better seal up the house.
Posted Jun 11, 2014 6:13 AM ET
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