Log home DER Ideas?
I am a long time reader of GBA and, as a result, would not generally even go near a log house if I was interested in energy efficiency. That said, I find myself considering one due to its location, location, location. Given that, I would like to get some opinions about the best ways to go about retrofitting the house so it is at least reasonably energy efficient. Cost counts, so ‘tear it down’ options aren’t all that helpful to me.
I have only seen pictures of the property to date, discussions here will help me decide if I want to go see it in person. The current house sits on a poured concrete foundation. A full basement sits under a portion of the structure, a crawlspace lies under the remainder. It is a cedar log house with what appears to be ~ 6″ ‘diameter’ logs, the logs are squared off in the interior, creating a relatively flat surface. Large logs (~10-12″ diameter) form the beams and rafters, smaller logs form the purlins, and what appears to be tongue and groove pine runs from the ridge to the eaves. The roof is asphalt shingles. The shape of the logs on the exterior appears to be OK, the shape of all interior members is good to very good.
So, I would love to hear ideas re the best ways to air seal the house and beef up insulation to somewhat reasonable levels. The first things that come to my mind are to chink things as well as possible on the exterior, implement some sort of interior air barrier/moisture retarder and build 2×4 walls inside of the log shell, possibly creating a gap between the framing and the interior surface of the logs and insulate with cellulose or mineral wool. Roof-wise, replace the shingles, taking the opportunity to place foam on top and placing additional insulation between the rafters inside. Thoughts? Other ideas? Warnings?
The house is in climate zone 6, along the coast of Maine.
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