Wall assembly detail question
My buddy is building his house in the southern end of the Ozarks zone 4 and has no code requirements.
His wall assembly outside to inside is:
1. 26 gauge tin
2. 1″ spray foam
3. actual 1x horizontal girts (rough sawn 1x)
4. 2×4 studs
5. cavities filled with r-13
He wanted to know if he is making any big mistake?
Is there any reason for housewrap between the metal and the horizontal girts.
I did not say anything as I am unsure, but I thought that if he ever needed to change his metal siding, it would be a whole lot easier if that housewrap was in place, so they are not glued together.
Thank you for your advice.
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