WRB and exterior Rockwool Insulation
We are using 2×6 studs, with cavity insulation, plywood sheathing, Siga Majvest as the WRB, then adding 4 inches of Rockwool Comfortboard to the outside before installing the rainscreen furring strips ( which will be 2×4 laid on the flat). Is there any value (or harm) to installing Tyvek sheeting outboard of the Comfortboard before installing the furring strips?
climate zone 4 Marine in Victoria, B.C. Canada just north of Seattle and Port Angeles.
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