Flat Roof Leaking At Flashing

It is the first place to troubleshoot for leaks on a roof.

Flat roof leaking at flashing. This flashing rests on the front edge of the lowest batten with a squash fold to direct any possible. Metal flashing that runs alongside a wall loosens up or the caulking gives and a major leak starts. The other issue is if the installer nailed the shingles through the flashing then those nails could start rusting and cause a skylight to leak. The minimum standard is 50mm.

On a shingle roof the flashing will get clogged with debris and in turn the water will get diverted under the shingles where it could start leaking. If you can aim for 150mm. Flashing just like most other materials asphalt flat roofs tend to expand and contract with changing weather and temperatures. Over time this continued expansion and contraction can cause the flashing to pull away from the edges and corners of your roof leading to leaks and moisture that can get trapped inside your roof.

Metal flashing copper bend at a 90 degree angle making the transition between the roof and chimney. Just make sure you leave enough room for gutter maintenance. Install a gutter flashing between the gutter and the roof sheeting. Flashing on a wall above a flat roof.

This video demonstrates where flashing could be leaking from on a brick wall.