Q&A / 

Charles Gregoire is perplexed up in Ottawa, the capital of Canada. "Confusion on whether to use tar paper or 6 mil plastic. In repairing a 64" section of an existing basement interior wood framed dry walled wall I discovered tar paper was glued onto the concrete wall, followed by a 1/2" gap, 2x3 wood framing […]

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Shane lives in Burien, WA. He's wondering about putting rigid foam on his house. He's also not sure about house wrap. "Can I put rigid foam on the exterior of my house and does the house wrap go on top of the foam or under the foam?" Shane, you can put rigid foam as an […]

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Ruth Hendrickson, who lives in Lincoln, MA wrote to me with a very fascinating question: "My wood frame house built in 1927 has wood shingles outside and plaster over rock lath inside. No wall insulation. Probably balloon construction. Is it safe to put insulation in the walls, or will I get water vapor condensing in […]

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There are several types of insulation to use when insulating a crawl space. Get several quotes from contractors and check the price of doing it yourself. Be sure to calculate when the insulation will actually start saving you money.

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Tim Carter shows how to use Dow closed cell foam insulation board to insulate the floor of an outdoor shed. Discover the additional benefits of the foam board in this video. Also watch for the ingenious tabs used to hold the insulation in place.

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Air leaks in your home can come from a variety of locations. Around doors and windows are common air leak spots. You can add insulation if it missing to keep Old Man Winter outside and save energy.

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Tim Carter describes the SIP roof system on a timber-framed home. The cross section of the SIP panel is unbelievable in this video. You'll see the long screws used to hold the structural insulated panel in place.

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