Log Home & Cabin Retrofits in Missoula, MT

Log and timber homes are everywhere around Missoula — up the Blackfoot toward Bonner and Clinton, in the Seeley-Swan, and scattered through the Bitterroot — and they leak in ways stick-frame houses don't. Solid log walls carry decent thermal mass but almost no R-value, and the real losses happen at the checking, settling gaps, and joints between courses where wind-driven cold works straight through. On most log homes the highest-return work isn't the walls at all: it's the roof or cathedral ceiling, the rim area where logs meet the foundation, and any floor over a crawl space or open pier foundation.

We scope these room by room. Closed-cell foam at about R-6.5 per inch goes where space is tight and moisture is a concern — under the roof deck, against rim logs, and on crawl-space walls — because it air-seals and acts as its own vapor retarder at around 1.5 to 2 inches. Open-cell often makes sense in a deep cathedral cavity where there's room to build R-value cheaply. A log home is never a one-foam job, and the point of the walkthrough is to spend the budget where the valley's cold air is actually getting in.