Window & Door Flashing Best Practices
Windows represent one of the most vulnerable locations in the building envelope and the most common source of leaks. Window and door flashings are designed to eliminate the risk of leaks and mold, which will also reduce your risk of call-backs. Unfortunately, there is an intimidating array of different types of flashing available and many installation considerations. Remember, when you select the right products for your project, you can install faster, and rest assured knowing that you’ll only have to do the project once. Here’s some practical information that will help you understand the alternatives and best practices so you can choose and install wisely. Types of Window and Door Flashing • Self-Adhesive Flashings (also called Peel ‘n Stick): For light commercial and residential construction, self-adhesive flashings are the most popular option. When properly installed, they bond to the substrate and provide an effective seal against moisture. • Mechanically Attached Flashing: In some of the drier parts of the U.S., mechanically attached flashing continues to be preferred for its faster install and cost savings. It is affixed with fasteners directly to the substrate. • Fluid Applied Flashings: These flashing membranes are typically dispensed with a caulking gun from a tube or sausage and then troweled across the rough opening surface. The material provides complete coverage and is especially useful with intricate or complex install details.
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