Should Flat Roofs Have Puddles

Flat roofs should not have puddles.

Should flat roofs have puddles.

We can stop your flat roof having puddles now. 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. However puddles 1 or more inches deep that linger for days can indicate a significant problem with. Flat roofs do not drain as effectively as pitched roofs.

They normally will have at least a inch to a foot slope and many roofers prefer more. It s really depends how much water the roof is holding. Ponding water is defined by roofers as water that stands in a puddle on the roof for longer than 48 hours. The slope should be a minimum of 1 in 80 but in practice a minimum slope of 1 to 40 should be used to allow for deflection of the roof and for normal building tolerances.

If it s holding a lot of water this is not good amd firings should have been installed. By lori lapierre by their very nature flat roofs do not completely drain after it rains. For clarity flat roofs actually have a slight slope to allow rain water to drain off the roof but they seem flat when compared with more traditional steeply sloped roofs. Some flat roofs can hold a small puddle of water here and there especially big roofs but if done to a good standard and the epdm up to scratch small puddles won t cause a problem.

The design of a flat roof can sometimes prevent rain and precipitation water from draining properly making standing water a common problem. Flat roofs should always have a slight pitch for quick drainage of rainwater but sunken areas that create puddles can appear from time to time. A roof should not have puddles because roofs are not designed to hold the weight of a large amount of water. Not only in the long term can it cause structural damage from the weight of the puddles but in the short term the puddles may cause leaks.

Long term effects of ignoring ponding water on a flat roof by ignoring long term ponding water on a commercial flat roof you increase the odds of having serious roofing problems. As a result flat roofs are notorious for developing ponding water. Home exterior roof flat roofs water puddling or standing on flat roof many so called flat roofs have some ponding.