Dampproof Flashing

Precast concrete, stone masonry or brick units known as “copings” close the tops of masonry walls or act as window and door sills. These units also serve to prevent water from entering the top of the wall. If the copings are installed in sections, water may leak through the joints. A dampproof flashing should be placed between the coping and the top of the masonry wall to prevent water from penetrating into the wall below (see Figure 122). Using a dampproof flashing is also good building practice if copings or sills without joints are used.

Figure 122

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