On a performing flat roof ponding water isn t a problem as it will just drain away.
Ponding water on flat roof.
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 is known in the roofing community as water that stands in a puddle on the roof for more than 48 hours at a time.
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.
Flat roofs by their very nature will collect some water when it rains.
Ponding occurs when after a storm or heavy rain water collects in pools on the roof.
This is because the flat roof can hinder drainage from rainwater which results in standing water on the roof.
What can you do about ponding water on your flat roof.
Ponding on a flat roof refers to when water collects and creates small pools or ponds while most of these small pools eventually drain off or even evaporate over a few hours it can become problematic when pooling water stands on top of a roof for 2 days or more.
Common problems caused by flat roof ponding.
Give the drains some tlc if the ponding is a result of blocked roofing drain systems a roofing professional will assist.
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 especially prevalent after a lot of rainstorms.
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 is the phenomenon of water pooling on flat roofs after storms snow melts or heavy rains.
The ponding or standing water can.
If your commercial building has a flat roof sometimes there is a problem with ponding water.
Roofs should be constructed in such a way that all water drains within 48 hours of the rain stopping.
It may also void your warranty.
Start from the beginning in extreme cases ponding may be a result of poorly installed or designed roofing.
However when your flat roof has uneven areas an insufficient slope or drainage issues the water doesn t dissipate.
Reduce the longevity of the roof increase exposure of the ponding area to damaging ultraviolet rays collect dirt lead to faster deterioration of the roof s coatings and materials encourage growth of vegetation such as moss algae and plants lead to a leaking.
The water may seep into the roofing material and cause damage inside cause.
This can cause issues including.
