Water Ponding On Roof

Proper design installation and maintenance of roofing structures can prevent this condition and its associated problems.

Water ponding on roof. Ponding water is defined as the water which remains on a roof 48 hours or longer. Roofs should be constructed in such a way that all water drains within 48 hours of the rain stopping. 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. Because these roofs don t drain water that well they are prone to developing what is known as ponding water.

After any rainfall lands on a flat roof water will begin to pool. On a performing flat roof ponding water isn t a problem as it will just drain away. On a performing flat roof ponding water is not a problem as it will drain or even evaporate away. 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.

Every flat roof will collect some water during periods of heavy precipitation. Water may accumulate on a low slope roof due to rain snow or runoff from rooftop equipment. Does your roof have issues with ponding water. This can cause issues including.

Common problems caused by flat roof ponding. 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. To specifically define the terms ponding or standing water refers to when water has not drained off the roof and has formed puddles or ponds 48 hours following the reason for the water. However when your flat roof has uneven areas due to sagging an insufficient slope or drainage issues the ponding water doesn t dissipate.

Ponding is the phenomenon of water pooling on flat roofs after storms snow melts or heavy rains. This can be done professionally or by homeowners who have access to a ladder and a power washer or a hose with. However when your flat roof has uneven areas an insufficient slope or drainage issues the water doesn t dissipate. And standing water on a flat roof is a common problem.

Ice can also build up and with temperature changes move across the roof surface scrubbing the membrane and potentially causing considerable. Pools should drain away without causing any damage to the structure but owners and managers should know when to take action how to identify the cause of the ponding and how to resolve it. Ponding water magnifies uv rays acting as a magnifying glass on the roof under the pond which increases the damaging ultraviolet exposure of that area of the roof which prematurely age the membrane causing splits cracking and mineral loss. If the water does not drain within a 48 hour period it is highly likely that it will stay even longer and there will be a larger amount of water standing.

Ponding occurs when after a storm or heavy rain water collects in pools on the roof. This leads to a decline in the membrane s lifespan and can lead to things like leaks which can cause serious. The problem is when the water sticks around. If water is backing onto the roof clean out the gutters to restore proper water flow.