HOW DOES WATER GET BEHIND STUCCO?
If you are looking to purchase a stucco house, you don?t need a conventional home inspector. You need a stucco contractor with experience in observing and repairing ?bad stucco?. It is not the stucco that is bad, it is the absence of ?weeping?, ?weep screeds? or ways for water to get out from behind the stucco.
?Stucco damage? is associated with stucco only because it is easier to say than ?wood rot behind stucco?. Stucco is basically a concrete material and when water gets behind it, it is good at trapping moisture between it and the interior wall of your house. Consequently, it sits in that space between the stucco and the studs eating away at the framing or wood studs in your house.
But wait, you say, isn?t there a protective barrier, that white stuff with Du Pont and Tyvek advertised all over it? Absolutely. But water is indomitable. It is either going to evaporate out of those wall spaces or it will persist in those wall spaces. The Tyvek is merely a ?wrap? for the house. Ideally, it should keep the moisture out but it requires proper application. Some people wrap presents better than others. And some builders do a better job applying this material.
In addition, windows and doors, roof changes, roof edges and wall terminations all present new opportunities for water to penetrate.
Finally, ?stucco damage? is the result of water that is trapped behind the stucco and can not get out. If the house has no ?weep screeds?, then the water can not escape the wall space.