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In New Hampshire’s cold climate, continuous exterior insulation is essential. Without it, you will end up with thermal bridging through the studs, condensation, and in the long term, mold. In my " Ultimate Wall Assembly " article I recommended Rockwool ComfortBoard 80. I still love that product, but it is almost twice as expensive as TimberBoard per square foot. Due to this limitation of the product, I have been searching for a more reasonably priced alternative that isn't E

The above wall assembly was designed with New Hampshire in mind, though it would also be appropriate in other cold climates with similar heating demands and building codes, such as much of the Northeast (e.g., Maine, Vermont, northern New York, and parts of Massachusetts and Connecticut) where Climate Zones 5 and 6 predominate and outward-drying assemblies are ideal. We service all of New Hampshire and thus wanted a NH-centric design. Our design is made not only to meet code,