Air and WRB
I recently read an article on fine home building on a 2018 house they helped build. The house used taped plywood seams as the air barrier and Delta Vent SA as the WRB. Can someone please explain why not use the Delta Vent SA as both? I mean if you have a small penetration in the WRB, it is glued on, so unless it happens to be over a plywood joint (what are the chances of that), it shouldn’t matter as far as air sealing is concerned.
They used Rockwool Comfort Board as exterior insulation, does that have anything to do with it? Thanks for the insight.
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