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| Term | Description |
|---|---|
| Flashing | Components used to weatherproof or seal roof and waterproofing system edges at perimeters, penetrations, walls, expansion joints, valleys, drains and other places where the roof covering or waterproofing membrane is interrupted or terminated. For example, membrane base flashing covers the edge of the field membrane, and cap flashings or counterflashings shield the upper edges of the base flashing. |