You're always better off capping parapet walls with metal rather than stucco'ing over them. But what if your client or the project architect doesn't want that look? I recently built a Spanish Colonial–style house near Austin, Texas, and my clients and the architect on the project wanted a traditional look. The roof over the front door was flat and called for a stucco parapet. The challenge was creating a parapet cap that didn't allow massive amounts of water to drain into, and rot out, the framing. (For a demonstration of the ugly failures that can occur with stucco parapet caps,...

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