Opinions on this Wall Assembly with Stucco Finish
My house in NE Oklahoma has vinyl siding over 3/4″ Dow foam directly on 2×6 studs 24 o. c.
I wish to pull vinyl, add 2nd layer 3/4″ Dow, 1 or 2 layers 30 lb. felt, 1×4 strapping with Cor-A-Vent SV-5 at top and bottom, then add 3 coat stucco with paper backed metal lath. At foundation (12″- 18″ top to footing) weather proof stem wall add 1″ Dow covered with Durock concrete board and 1 coat stucco.
-What should I do differently than I’m planning?
-Should I tape Dow seams and if so with what? It’s 15 psi is that ok?
-Some Dow comes with plastic on each side and it’s stronger? ok to use?
-Should/ can I vent Cor-A- Vent into soffit?
-We have mud dobbers (wasps) everywhere and they love going behind vinyl siding, will they get thru Cor-A- Vent, if so do I screen it or use something else?
-Type and how many screws to use in each 8′ 1×4? 4 1/2″ long?
Different topic- I’m going to pour a monolithic slab on top of Dow foam. I want to sit footing on 1″ or 2″ foam. I can get 25 psi foam and special order 40 psi. my soil is clay and sandstone. 25 psi ok?
Thank you for time and advice, TractorSteve
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