Ponding On Flat Roof

Those pitched roofs have a natural slope where the water can run down draining off the roof.

Ponding on flat roof.

Air conditioning units skylights or vents placed around the flat roof may stop the intended flow of water and cause pooling or ponding in their vicinity. Ponding problems for flat roofs. One of the biggest problems with large flat roofs is that they tend to pond water in certain areas. Long term effects of ponding water on a flat roof if your commercial building has a flat roof sometimes there is a problem with ponding water.

So if your flat roof is collecting water that doesn t drain or evaporate within 48 hours you will need to fix it. This is known as ponding and it can bring a range of potential problems. Degrading roofing materials particularly on older modified and built up roofs extra stress and damage to the load bearing structure due to the extra weight of the water in winter freezing standing water will expand causing more damage where seams overlap. Dry the puddled water with old rags or towels and allow the roof exterior to completely air dry.

It may also void your warranty. Flat roofs by their very nature will collect some water when it rains. Having a flat roof can have a lot of benefits to it. Flat roofs have subtle slopes to facilitate drainage.

Install additional drains. It will actually destroy just about every roof coating there is even ours. Common problems caused by flat roof ponding. And as a result water can end up building up on your roof causing small bodies of rainwater to become an almost permanent feature.

Ponding can occur on flat and low slope roofs that are installed using tarpaper roofing tar and fine gravel or a similar built up system. 3 use the utility knife to cut a 12 inch diameter circular patch out of the rolled asphalt roofing. But there is one definitive downside to those flat roofs. This is especially prevalent after a lot of rainstorms.

A sagging roof deck. Opening or unclogging existing drains. However excessive ponding threatens your roof. This is because the flat roof can hinder drainage from rainwater which results in standing water on the roof.

Low spots in the roofing allow water to pond which can. If there are low spots on the. The easiest way to prevent water ponding is to clean the drains rain gutters. Because these roofs don t drain water that well they are prone to developing what is known as ponding water.

Ponding is caused by a range of factors including. However this isn t the case for all flat roofs. This is because flat roofs do not drain water as effectively as their pitched counterparts.