2×4 vs 2×6

- 2×6 holds more insulation
- 2×4 needs exterior foam to match
Framing is the skeleton. It decides wall thickness, ceiling heights, what can be hung where and how quiet and tight the house is.
Wall framing and sheathing set the insulation depth and the water and air barriers.

The rest of Framing: 2 more spreads, 12 drawings and 1 code citation, plus every other chapter, is part of the full fieldbook.
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