“Perfect Wall” Construction Details
I have found myself reading Lstiburek’s “Perfect Wall” article many times over lately. I’m looking for reasons why I should consider another wall structure for my new home. I’m looking specifically at Figure 9 in his article “The Residential Wall”.
I do have a few questions about some of the construction details, though. I’m not a builder or framer, so pardon the lack of knowledge some of my questions may reveal:
- In order to create a drainage/air cavity between the siding and the rigid foam insulation, would I use furring strips (1×4)?
- Would furring strips also be the best way of hanging the siding (wood lap or fiber cement) if I have 2″+ of rigid foam?
- If we use a housewrap under the foam sheathing, is it installed with construction adhesive? Or screwed together to the OSB underneath the housewrap?
I also have some concern about adding additional structural support for our south-facing wall. The house has a single-story passive solar design (single shed roof facing North), so the South wall is tall (just over 20′) with a lot of windows. How would I add additional structural support on that wall within the wall system described above? I’d like to arm myself with some ideas before I sit down with our architect.
Many thanks for your time and opinions.
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