Ponding Vs Puddling Water On Roof

Most often water ponding is due to changes in the soil beneath the concrete slab. After cycles of wet and dry or freezing and thawing the soil beneath the concrete may become unstable and develop pockets or holes. After any rainfall lands on a flat roof water will begin to pool.

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On modern white roofs the water focuses the sunlight that passes through it like a prism and intensifies uv degradation.

Ponding vs puddling water on roof.

Common problems caused by flat roof ponding. Eventually the soil will not be able to support the concrete and the concrete will actually sink into the holes beneath it. Ponding water accelerates roof system aging by. However when your flat roof has uneven areas due to sagging an insufficient slope or drainage issues the ponding water doesn t dissipate.

Ponding water can also create a number of other problems for buildings. Ponding water is known in the roofing community as water that stands in a puddle on the roof for more than 48 hours at a time. And if it doesn t drain properly then your roofing materials become subject to the added stress of ponding water. If you have some water on your roof after a heavy rain for instance but the water is gone in a couple of days your roof is doing just fine.

Even flat roofs contain a slight slope to maintain positive drainage. Ponding water might not be an immediate threat but if it is allowed to persist over time that water can begin to wear on the roofing membrane. Most pools of water will quickly drain off or even evaporate but owners should be aware of the signs that ponding has become an issue. However puddles 1 or more inches deep that linger for days can indicate a.

While a puddle after a rainstorm is common if the water is still there two or three days later it could prematurely deteriorate your roofing system. On a performing flat roof ponding water is not a problem as it will drain or even evaporate away. Does your roof have issues with ponding water. Roof systems are simply not designed to hold water.

Collect dirt which may cause the growth of vegetation or telegraph mud cracking to the roof below. Every flat roof will collect some water during periods of heavy precipitation. This is a particular concern for older built up and modified roofs. Degrading the roofing material itself.

The grp flat roof has standing water or is ponding water into one area. Ponding water is typically a sign of a drainage problem that needs to be addressed because when left unaddressed ponding water on a roof can. Standing or ponding water is a regular occurrence with flat roofing in general but one that will not affect the performance of the grp roofing surface. By their very nature flat roofs do not completely drain after it rains.

Ponding occurs when after a storm or heavy rain water collects in pools on the roof. Act as a magnifying glass on the roof under the pond which increases the damaging ultraviolet exposure of that area of the. How to fix water puddling on a flat roof.