Flat Roof Standing Water

How to fix water puddling on a flat roof.

Flat roof standing water.

There can be a host of reasons why ponds of water may appear on your roof after bouts of rain so it s important to know what remedial action to take if your property is suffering. And standing water on a flat roof is a common problem. Having some standing water on a roof can be so stressful. After the 2 days the water is going to start sinking into the roof system.

Occasional minor ponding on a roof doesn t really create problems that much. It is is very important to correct this issue before it becomes irreversible and costly repair follows. The design of a flat roof can sometimes prevent rain and precipitation water from draining properly making standing water a common problem. By their very nature flat roofs do not completely drain after it rains.

How to fix ponding on a flat roof depends on the cause of the ponding. Leaving water on a flat roof for less time can help minimize roofing damage. It s best to have a pitch of 0 5 12 or 1 12 that can help drain water towards the appropriate gutter systems. However standing water that stays for more than two days can be very problematic for the roof membrane because it can void your roof s warranty.

Long term effects of ponding water on a flat roof. On a performing flat roof ponding water isn t a problem as it will just drain away. This means that once the rain stops you have about 2 days to get rid of the standing water or puddles that are on the roof. However when your flat roof has uneven areas an insufficient slope or drainage issues the water doesn t dissipate.

The water pools after days or hours of steady precipitation due to a variety of causes such as a clogged drain or structural issues that inhibit drainage. It may also void your warranty. Puddles or ponding water is water from rainstorms and snow melts that collects on a flat roof and doesn t drain or evaporate after 48 hours. So if your flat roof is collecting water that doesn t drain or evaporate within 48 hours you will need to fix it.

Flat roofs by their very nature will collect some water when it rains. If your commercial building has a flat roof sometimes there is a problem with ponding water. Standing water on a flat roof add weight that will affect the structure of the roof. This can cause issues including.

This is especially prevalent after a lot of rainstorms. However excessive ponding threatens your roof. How much more when the type of roof that you have is a flat one. The weight of the water pooling on a roof can cause the joists to bow and in turn cause more water to accumulate.

This is because the flat roof can hinder drainage from rainwater which results in standing water on the roof.