Fill soffit with open cell spray foam?
Thank you for helping me understand things!
I’m planning a new slab house build in CZ3 with OC spray foam conditioned unvented attic with shingle roof and planning a dehumidifier along with HVAC in attic.
I requested nonperforated soffit planks for the enclosed soffit. Spray foam sub said then he’d have to fill soffits with the same open cell spray foam he’d use under roof deck.
I know it will increase cost, but is it the right thing to do?
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