Should Flat Roofs Have Puddles

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.

Should flat roofs have puddles.

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. 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. Ponding water is defined by roofers as water that stands in a puddle on the roof for longer than 48 hours. Flat roofs should not have puddles.

Our unique formula of recycled rubber crumb polystyrene balls and binder fill up the areas where the puddles were on your flat roof making your flat roof flat again. Home exterior roof flat roofs water puddling or standing on flat roof many so called flat roofs have some ponding. When these sunken areas appear it s important to examine the problem carefully and determine if it is related to structural damage. Flat roofs do not drain as effectively as pitched roofs.

However puddles 1 or more inches deep that linger for days can indicate a significant problem with. A roof should not have puddles because roofs are not designed to hold the weight of a large amount of water. If it s holding a lot of water this is not good amd firings should have been installed. 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.

As a result flat roofs are notorious for developing ponding water. 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. The design of a flat roof can sometimes prevent rain and precipitation water from draining properly making standing water a common problem. 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.

By lori lapierre by their very nature flat roofs do not completely drain after it rains. 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. Flat roofs really shouldn t be flat.