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Personal: Residential

Weatherstripping

Weatherstripping creates a seal at the moving joints of a window, a door with window insert, or a skylight to block rain and dust and to minimize air leakage. Compression seals are the most effective type of weatherstripping because they can be squeezed tightly between the moveable sash and the frame.

Figure 20

The design of some types of windows and doors makes it impossible to use compression seals. In this case, brush-type weatherstripping is used by the manufacturer to create a sliding seal.