Level Low Spot On Flat Asphalt Roof

Low spots on a flat roof.

Level low spot on flat asphalt roof.

I have some areas on my flat roof that are low. Old style flat roofs were often designed with pieces of asphalt felt paper sandwiched between tar. Access the flat or low slope roof using an extension ladder. Recently i noticed the low spots have began to blister not sure this is the correct term.

One way is to use layers of rolled asphalt. By their very nature flat roofs do not completely drain after it rains. The roofer will fill in the low area and give it a slope to match the existing slope of the roof. Shortly after we moved in a leak was discovered coming from the lower smaller portion of the roof.

In this particular case the client didn t have the budget for a re roof so that was out of the question anyways. However puddles 1 or more inches deep that linger for days can indicate a. Here is a video on how to seal a flat roof permanent it does not required a lot of skills just time to let it dry completely hope it beco. This new roof was installed 2 ply hot mopped in 2015.

The problem is it s tough to get the strips just right to fully eliminate the pooling area. Some contractors will cut out a few feet beyond the low spot and cut pitch strips to nail on the joists to level out the areas. When it rains it puddles there. How to fix water puddling on a flat roof.

A professional roofer can usually fix a low spot in a roof with some roofing plaster. If you prefer a diy approach and are somewhat handy you can try filling the spot yourself. Another method for fixing low spots is to apply new roofing plies to the problem spot. In these kinds of felt roofs it is possible to fill low spots with two or three layers of felt applied with tar or another bitumen.