Water Pools On Flat Roof

It starts with the weight.

Water pools on flat roof.

Flat roof water pool weight can cause damage to the structure. This is why it s imperative that you don t allow water to pool on the roof for more than 48 hours after rainfall. Standing water weighs approximately 5 lbs. In two areas there is ponding of water that doesn t seem to drain away and takes a long time to clear whereas the remainder of the roof seems to dry out quite quickly.

We have had a fibre glass flat roof installed on a new extension we ve had built. Flat roofs do not drain as effectively as pitched roofs. If water pools in the deteriorated area it can find its way through the roof and cause a leak. Another side effect of pooling water is that the water collects dirt from the entire surface of the root and as it slowly evaporates it leaves behind a pile of mud and dirt.

Water pooling on flat roof originally posted by mathew stouffer i believe the international building code states flat roofs should be dry with in 48 hours after precipitation ends. This is done by not allowing the water to pool. This becomes more and more expensive as time goes on. As a result flat roofs are notorious for developing ponding water.

Per inch for every square foot. However puddles 1 or more inches deep that linger for days can indicate a. By their very nature flat roofs do not completely drain after it rains. Your goal is to prevent damage to the flat roof.

It does not say for which season. How to fix water puddling on a flat roof. Ponding water is defined by roofers as water that stands in a puddle on the roof for longer than 48 hours. This weight will put stress on the joists or.