Does fastening WRB or building felt with cap staples work as an air gap for a rain screen approach?
I'm wondering if the space created by the plastic cap staples will work as a "cheapskate's" rain screen under vertical ribbed steel siding? I don't know the exact thickness of the cap staple, but from memory I would say it's a bit over 1/16".
My wall assembly is as follows: 29 gauge vertical rib steel siding, Typar WRB, 1/2" cdx sheathing (taped and caulked as exterior air barrier), 2"x8" stud wall with dense pack cellulose or cut and cobble polyiso cavity insulation), 2" rigid polyiso interior sheathing taped, and 1/2" acx interior sheathing.
This is for my wood shop. Heated and cooled at 68 degrees year round.
Feel free to comment on my wall assembly as well. I can't find any info on rain screens behind steel siding. Maybe it's not even needed? Either way, I figured having multiple cap staples "bumping" out the steel can't hurt.
Posted Wed, 03/12/2014 - 15:58
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