Foil Faced Polyiso & DrainWarp for OSB drying
A week or two ago there was discussion about vapor permeability of foil faced polyiso exterior foam and the effect it has on drying of the sheathing.
I came across this Tyvek Drainwrap which sounds like it is similar to regular building wrap except it provides a drainage route between the sheathing and exterior foam. It seems like it would also be a way for the sheathing to dry to both the inside and outside.
Does anybody know of its effectiveness or is it just marketing hype to sell more expensive building wrap?
Does anybody know of other products like this that I should look into?
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