Rainscreen with furring on 30# felt WRB
What do people think about using 3/8in thick furring strips @ 16in o.c. over 30# Felt (ASTM D226 Type 2) as a rain screen gap/WRB assembly?
The furring would be either 3/8in x 2in plywood strips or Cora-Vent Sturdi-Strips and would be ventilated top and bottom with Cora-Vent SV3 siding vent/bug screen. The plywood strips would be borate treated to prevent powder post beetles and rot problems in the furring strips.
Would “puckering” of the 30#felt when it absorbs moisture be a problem?
The location is on the Oregon Coast (Climate Zone 4C) about 1/4 mile from the ocean. This is new construction and a rain screen gap or drainage material is required in Oregon.
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