Ponding On Flat Roof

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.

Ponding on flat roof.

Common problems caused by flat roof ponding. The easiest way to prevent water ponding is to clean the drains rain gutters. So if your flat roof is collecting water that doesn t drain or evaporate within 48 hours you will need to fix it. Having a flat roof can have a lot of benefits to it.

It will actually destroy just about every roof coating there is even ours. If this water sits on the roof for more than 48 hours after the rain has stopped it can cause considerable damage to whatever roof surface you have. It may also void your warranty. Flat roofs have subtle slopes to facilitate drainage.

Because these roofs don t drain water that well they are prone to developing what is known as ponding water. This is because flat roofs do not drain water as effectively as their pitched counterparts. If there are low spots on the. How to stop ponding from happening fixing low spots on flat roofs.

One of the biggest problems with large flat roofs is that they tend to pond water in certain areas. Ponding is caused by a range of factors including. Dry the puddled water with old rags or towels and allow the roof exterior to completely air dry. Flat roofs by their very nature will collect some water when it rains.

Ponding problems for flat roofs. 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. 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. 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.

This is known as ponding and it can bring a range of potential problems. However this isn t the case for all flat roofs. Low spots in the roofing allow water to pond which can. But there is one definitive downside to those flat roofs.

However excessive ponding threatens your roof. Install additional drains. Those pitched roofs have a natural slope where the water can run down draining off the roof. A sagging roof deck.

And as a result water can end up building up on your roof causing small bodies of rainwater to become an almost permanent feature. This is especially prevalent after a lot of rainstorms. Opening or unclogging existing drains.