Ponding On Flat Roof

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.

Ponding on flat roof.

This is especially prevalent after a lot of rainstorms. 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. Those pitched roofs have a natural slope where the water can run down draining off the roof. Ponding problems for flat roofs.

It will actually destroy just about every roof coating there is even ours. Low spots in the roofing allow water to pond which can. Dry the puddled water with old rags or towels and allow the roof exterior to completely air dry. This is known as ponding and it can bring a range of potential problems.

Ponding is caused by a range of factors including. Flat roofs by their very nature will collect some water when it rains. The easiest way to prevent water ponding is to clean the drains rain gutters. However this isn t the case for all flat roofs.

But there is one definitive downside to those flat roofs. A sagging roof deck. This is because the flat roof can hinder drainage from rainwater which results in standing water on the roof. Flat roofs have subtle slopes to facilitate drainage.

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. And as a result water can end up building up on your roof causing small bodies of rainwater to become an almost permanent feature. Having a flat roof can have a lot of benefits to it. 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.

How to stop ponding from happening fixing low spots on flat roofs. It may also void your warranty. Because these roofs don t drain water that well they are prone to developing what is known as ponding water. One of the biggest problems with large flat roofs is that they tend to pond water in certain areas.

However excessive ponding threatens your roof. 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. Opening or unclogging existing drains. Common problems caused by flat roof ponding.

This is because flat roofs do not drain water as effectively as their pitched counterparts. 3 use the utility knife to cut a 12 inch diameter circular patch out of the rolled asphalt roofing. Install additional drains.