|Posted by dave on February 28, 2011 at 3:32 PM|
The top reasons why a flat roof leaks are:
1.Bad design - Not having an adequate fall on the roof or adequate outlets for water to drain from the roof.
2.Bad workmanship - The roof covering not being installed to the manufacturer's specifications.
3.Settlement - The roof holds water because the timbers supporting it have sagged and now allow water to pond on the roof.
4.Lack of maintenance - Solar-reflective stones or paint haven't been applied regularly to prevent the sun from blistering and splitting the surface.
5.Puncturing - People walking and working on the roof without taking care.
6.Poorly installed flashing's - Flashing's not dressed to the surrounding walls correctly or incorrect use of flashing materials, such as lead not being used correctly.