BobVila.com

Tyvek vs building paper

And another thought. There is a product on the market called greenguard put out by pactiv. For a drainage plane I think it is superior to tyvek!!! It has horizontal webbing and really wicks the water out the bottom of the wall. It is a directionaly installed product. And you will have a very hard time compressing it enough to keep it from working unlike tyvek.Ther is a link to greeguard on the badstucco website.