b'Coastal CMU Installation with Installed BuckCoastal InstallationStucco finished homes are prevalent in coastal areas of the but it is not waterproof. Neither is it, as thought by US and with the advent of Hurricane Code Standards in many, porous. In fact, when liquid water penetrates Florida and elsewhere, installation of products for these stucco cladding on a building, it almost always does so areas require different details, techniques and procedures. not through the field of the stucco but through breaches at cracks, control joints, perimeters of openings such asStucco Finish doors and windows and joints with abutting materials. A building system utilizing stucco as a wall cladding is In a properly designed stucco clad wall, water from thesegenerically known as a drainage wall, a wall system in breaches is expected to penetrate no further than the which the outermost material provides a substantial barrier to water and a secondary material, typically aweather resistive barrier (WRB), provides a backup barrierto water that may penetrate the cladding. Penetrating water is intended to flow by gravity to the exterior outside of the WRB and is prevented from reaching water-sensitive materials. There are two types of drainage walls: membrane drainage walls and cavity drainage walls. A system utilizing stucco is an example of a membrane drainagewall, whereas a system using masonry veneer is usuallydesigned as a cavity drainage wall. In drainage walls, evaporation may also play a role in moisture dissipation,but is a comparatively slower process subject to weatherconditions. As a material, stucco can provide a high resistance toTypical Flanged Window in passage of liquid water if properly formulated and cured, Stucco Veneered Block or Frame WallWindow Fitters Guide to Window Installation 125Contents 2020-Do not reproduce without permission'