Understanding Walls

Understanding Walls: The Components in a Wall When I was a young intern in Canada, the construction of the exterior walls on houses was very straightforward and once you got past the variation of exterior finish (brick, wood siding, vinyl siding etc) it was all the same: sheathing on the outside of the wood studs, fiberglass batt insulation in the stud cavity, 6 mil poly vapor barrier, drywall on the inside. This type of wall was built everywhere. Ontario, British …

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