Category: Causes of Roof Problems
Some common causes of base-flashing problems are:
- Insufficient number of base-flashing plies. - Improper base-flashing height. - Insufficient protective coating, resulting in accelerated weathering and deterioration. - Omission of cant strips, making the base flashing more susceptible to damage. - Open vertical end laps or seams caused by insufficient sealing. - Insufficient adhesion or movement between vertical surfaces and the roof deck, resulting in separation of base flashings from vertical surfaces. - Loose insulation, causing base flashings to separate from vertical surfaces. - Improper fastening of base flashings to walls or curbs, resulting in sagging or separation of the flashing from the vertical surface. - Deteriorating substrates, causing base flashings to separate from the surface, or permitting water to enter behind base flashings.