As a business or home owner, you know how important your building is. You spend time, money, and effort keeping your building in excellent condition to provide goods and services to your customers.  It is no surprise that one of the most important parts of your building is the roof. If your building has a flat roof, could be at risk of ponding water. This can lead to visible signs of damage, required costly repairs. The experts at EcoShield Roofing have developed this guide so you can better understand the consequences of water pooling on your roof. We have even included some tips on how to fix and prevent ponding water to keep your roof in great shape. Read more here.

What cause ponding?

There are several factors that can contribute to water pooling on your roof. The roof pitch is the main factor, if your business’s flat roof lacks the proper pitch, or slope of 1/4 inch per foot, water may be unable to run off. There could also be leaves, dirt or other debris in your gutters and drainage system. If this is the case, water on your roof will have nowhere to go, resulting in ponding.

There could be too much roofing material or improper flashing on the edge of your roof. This causes a slight increase in height at the edge of the roof, trapping water before it can run off. These issues can result a great damage to your roof, so you should call a professional roofing contractor for the main cause. Let us check consequences of ponding water on your roof.

Consequences of ponding water on roof

1.Vegetation growth

True, ponding water can cause plants to grow on your roof. The pools of water on your roof can collect dirt particles that are floating in the air. This dirt can accumulate, offering an ideal environment for plants to take root.

2.  Vegetation Growth

It is true that ponding water can cause plants to grow on your roof. The pools of water on your roof can collect dirt particles that are floating in the air. The dirt can accumulate, providing an ideal environment for plants to take root. Moisture and dirt can support saplings of nearby trees, grass, weeds algae and even mold. These plants can damage your roof, and their weight poses a risk of structural collapse. The mold and mildew can even pose a health risk to you and your employees.

3. Damage of Roofing Material

Water pooling on your commercial roof acts as magnifying glass for the sun. This will amplify the sun’s harmful ultraviolet rays that hit your rooftop. The sun can cause premature breakdown of your roof in the area where there is ponding water. You might need to repair or replace that section of the roof.

4. Water damage

Ponding water can cause broad water damage to your roof and building interiors. Ponding water damage may be the most obvious consequence on this list, but take into account the extent of the damage. Ponding water is heavy, which can cause sagging roof. This will encourage more water to flow into the area, exacerbating the problem. The structural damage to your roof will worsen, resulting in even more problems.

5. Leaks

As more water accumulate on your roof, it is only a matter of time before it leaks inside. Water will degrade your roofing material, allowing water to enter your structure from above. This can cause leaks and water damage to your ceilings and walls. Moisture in your building interior can promote mold growth, posing a health risk to everyone inside.

6. Insects

Bugs, flies, mosquitos and other insects thrive in area with warm, standing water. Ponding water on your roof in he spring and summer can create an ideal environment for pests to thrive. This will be a nuisance for your and your employee’s, but it may also affect nearby business and homes. Insects can even carry diseases that endanger the community’s health.

7. Ice Damage

As snow melts throughout the winter, water may begin to pool on your flat roof. When temperatures drop, the water can freeze and cause structural damage to your roof. The freeze thaw cycle, in which water expands and contracts can cause cracks and visible damage to your roof. If you have ponding water problem, you should consider addressing it before winter arrives.

How to fix and prevent ponding water on flat roof

You should try to resolve your ponding water issue to avoid costly repairs and even health risks. Here are some tips to fix and prevent ponding water on your roof.

1. Unclog gutter and drains

In the best case scenario, your ponding water problem stems from clogged gutters and drains. Clear any debris from these structures and see if that solves the problem.

2. Add More drains

If your area experiences common heavy rainfall, your flat roof may be unable to handle the sheer volume of water. You may need to install additional drains on your roof to direct water away from your building.

3. Add slopes

Water may pond on an improperly sloped surfaces. That is why repairing low spots on flat roofs is an essential solution. Install some material on your roof to create an artificial slope and direct water from lower areas to your drains and gutters.

4. Schedule yearly Maintenance

To keep your roof in good condition, you may need to pay more attention to it. Schedule yearly maintenance to ensure your roof is prepared for the upcoming rain and snow.

5. Hire Professional

For these and other repairs, you may require professional assistance. Roof work can be dangerous and improper repair may worsen existing issues. Seek guidance from an experiences roofing company to complete the job correctly the first time.

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Author: William Sessions

William Sessions started a roofing business in 2018 with a mission to create high-quality roofs for Winston-Salem and surrounding areas. He did jobs for Safeco, Liberty Mutual, All-State, and Nationwide for two years. In that experience, he learned how to properly inspect for Hail, Wind and other damages to shingles that would impact insurance claims. After that, he started his own family business and proudly served roofing service in North Carolina. He leverages his roofing knowledge and provides useful insights through blogs on