Flat Roof Parapet Repair

This short repair video shows how to tie in a flat roof to a parapet wall with an l flashing using only surecoat roof coating and poly mesh.

Flat roof parapet repair.

If you didn t get it right you concentrated the stresses at roof edges and you could suck in a parapet or tear or rip a membrane at the parapet photographs 3 and 4. Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot. This new torch on flat roof is leaking because the parapet walls and the coping stones are defective water damage to the ceiling below from the leaking ceil. Parapet walls are a practical solution for providing a boundary between neighboring properties roofs.

The slope should be a minimum of 1 in 80 but in practice a minimum slope of 1 to 40 should be used to allow for deflection of the roof and for normal building tolerances. As a roof ages the roofing seams begin to separate often beginning where the flat roof meets the parapet wall. Parapet walls offer protection against fire because they impede the spread of fire by making a boundary on slanting roof. This gives the roofs of building a flat roof look.

It serves as an extension of the wall by which the roof is supported. Courtesy of max baker and the national research council of canada. This video is about making a transition form a flat roof to a parapet wall with taracotta clay caps. Many flat and low slope roofs are surrounded by parapet walls.