Flat Roof Leaking At Flashing

On a flat roof we suggest starting at 100mm of overhang.

Flat roof leaking at flashing.

Flashing is the number one cause of leaks on flat roofs. 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. 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. If you can aim for 150mm.

Just make sure you leave enough room for gutter maintenance. Metal flashing copper bend at a 90 degree angle making the transition between the roof and chimney. The best way to. Metal flashing that runs alongside a wall loosens up or the caulking gives and a major leak starts.

It is the first place to troubleshoot for leaks on a roof. This flashing rests on the front edge of the lowest batten with a squash fold to direct any possible. Install a gutter flashing between the gutter and the roof sheeting. 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.

Flashing just like most other materials asphalt flat roofs tend to expand and contract with changing weather and temperatures.