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Preventing Ponding Water on Your Roof

01 November, 2016

Ponding water is a major issue on many flat roofed homes, often causing the roof to sag, then tear, then leak, and then require replacement. There are some key steps you can take to prevent ponding water on the roof of your home to help ensure that it doesn’t leak. Let’s take a look at what you can do to help prevent ponding water on your roof and make it last as long as possible.

Preventing ponding water

A sagging roof will allow ponding water, which causes more sagging and leads to more ponding water.

Ensure the Roof is Flat

The obvious cause of ponding water is a sagging roof that allows water to stand in place on the roof. The goal of a roof slope is to be slanted enough that the water naturally moves to a drain in the roof, allowing the water to exit the surface. So, preventing ponding water on your roof starts with ensuring a satisfactory slope which will allow the water to exit the roof surface. Preventing ponding water with a good roof slope means the roof won’t sag under the pressure, which alleviates much of the pressure on your roof.

Repair the Roof Slope

If the roof is already installed and the slope was bad from the start, you can make some repairs on the roof to fix the slope, preventing ponding water after the fact. Repairing the slope once a roof is installed, however, can be difficult and very expensive. This is not a very common option because it takes so much time and money to complete.

Remove Water that is On the Roof

If your roof slope is bad and you can’t fix the slope after the fact, you have to treat the ponding water as it arises: either by sweeping or pushing the water off your roof or putting pumps on the roof to move the water to a section with better slope. Some of the newer models on pumps have the capability of turning off and on automatically, and all pumps connect to hoses to move water around the roof surface.


Ponding water can be a major problem on your roof if you’re not careful. Preventing ponding water is one of the greatest ways to prolong your roof’s life and improve it’s performance. Contact us today to learn more.

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