Exterior stucco question
I am remodeling a small (750 sf) 1930’s cottage and the plan calls for stucco on the exterior. I will remove the old siding/ felt and want to bump up the R-value of the 2×4 walls by applying 1″ foam board over the exterior sheething.. My question is, should I apply Tyvek over the sheething, followed by the foamboard, then felt, then metal lathe? Also, is the felt layer really necessary? The best stucco guy in my area recommends it because it will “buckle” from the moisture in the wet stucco, creating channels to allow condensed vapor to migrate downward towards metal flashing and to the outside.
Not sure if it matters, but about half the house has sprayed foam insulation in exterior walls, the other half has fiberglass bats. Also, any thoughts on Cement vs acrylic based stucco?
Thanks! Montana JP
Tyvek makes a product specifically for stucco. It comes pre-wrinkled ... looks like crepe paper.
I'm sorry, I thought you wanted it done the right way.
Thanks Ed. I will look into that Tyvek product.
Be sure to look at raindrop by pactiv. A greenguard product!