Parapet Wall Roof Leaks

Water may be entering the coping at the top of the parapet or entering the roof side of the parapet.

Parapet wall roof leaks.

Water from either of these locations may bypass flashing and enter the backup wall directly. It is the wind pressure that causes the majority of wall leaks not water flowing down the wall. Seam separation is a common issue with traditional roofing materials. On the other hand the roof doesn t know which direction the rain is coming from.

There are other common causes for leakage at parapet walls. Roof leaks in the roofing seams on the parapet walls can be repaired the same way as the flat roof area in just a few minutes with the scrs. And in our experience when a single piece of flashing extends only a few inches under the shingles especially on a long roof slope and worse on a roof that happens to slope slightly towards rather than away from the abutting vertical building wall the accumulated roof drainage water near the bottom end of the roof wall intersection will overwhelm the width of the flashing and because it is not directed back out on top of successive shingle courses it leaks into the building or building. Don t seal the parapet rain the primary source of water is driven by wind through permeable masonry units mortar joints and cracks in the wall.