Water Pooling On A Flat Roof

This is because the flat roof can hinder drainage from rainwater which results in standing water on the roof.

Water pooling on a flat roof.

When it comes to pooling on your flat roof you might find that the water ponds in specific areas. 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. After any rainfall lands on a flat roof water will begin to pool. As a result flat roofs are notorious for developing ponding water.

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 due to sagging an insufficient slope or drainage issues the ponding water doesn t dissipate. Puddles or ponding water is water from rainstorms and snow melts that collects on a flat roof and doesn t drain or evaporate after 48 hours. These areas typically are near chimneys or around large vents.

Your goal is to prevent damage to the flat roof. The first option is to change the design of your roof. These areas that pool also accumulates dirt and leaves that accelerate the growth of algae and moss which is also harmful to the roof. I ve recently had two flat roofs replaced with a 3 layer torched bitumen system.

Ponding water is defined by roofers as water that stands in a puddle on the roof for longer than 48 hours. Water pooling on flat roof. Contractors installed new flat roof above shower room and kitchen extension with no insulation. This is especially prevalent after a lot of rainstorms.

As such you need to get rid of the water that is on the roof. While this is not an immediate threat over time ponding water will begin to wear on the roofs membrane thus shortening its lifespan. I had my flat roof re covered with epdm roof covering recently however one corner has a continuous pool of water. On a performing flat roof ponding water is not a problem as it will drain or even evaporate away.

The water pools after days or hours of steady precipitation due to a variety of causes such as a clogged drain or structural issues that inhibit drainage. This is done by not allowing the water to pool. One method of getting rid of the water on a flat roof is to install a channel. Pooling water on flat roofs can damage rubber membranes and cause leaks.