3 Common Reasons Why Commercial Roofs Leak

Posted on: 3 June 2022


Many commercial roofs are designed to last for decades, but some eventually develop leaks. If you notice water infiltration on your property, you need to determine the source and take corrective action as soon as possible. 

Here are three common reasons commercial roofs leak.

Defective Flashing

Flashing is the material used to seal the connection between the roof and any protruding structures, such as skylights. This material also helps direct water away from vulnerable areas.

Over time, flashing can become cracked, warped, or loose, creating gaps that allow water to seep in. In some cases, improper installation can also lead to leaks. For example, if the flashings are not properly sealed or are installed over dirty surfaces, they may not adhere properly and will be more likely to fail. 

To prevent leaks, regularly inspect the flashing and make sure it's in good condition. Bring in an experienced commercial roofing contractor to fix the problem if you notice any damage.

Ponding Water

When it comes to leaks in commercial roofs, ponding water is a major culprit. Ponding occurs when rainwater or snowmelt accumulates in low-lying areas of the roof, typically around drains, scuppers, and other openings. The water can then seep into the roofing material, causing the deterioration of the roof and eventually leading to leaks.

In addition, ponding water puts extra stress on the roof, which can lead to additional problems such as cracks and tears. As a result, you need to take steps to prevent ponding water from accumulating on commercial roofs. One way to do this is to ensure that drains are clear and functioning properly.

Regular maintenance can also help identify potential problem areas before they have a chance to cause damage. By taking these precautions, you can help extend the life of your commercial roof and avoid costly repairs.

Poor Drainage

Your roof should have a drainage system in place to ensure that water can flow off the surface and away from your building. This system includes gutters, drains, and downspouts. If any of these components are damaged or not functioning properly, it can lead to poor drainage and eventually leaks.

To prevent this from happening, regularly inspect your roof's drainage system. Ensure that the gutters are clear of debris and that the drains are not clogged. In addition, check to see that the downspouts are directing water away from the building. You may also consider installing a roof drain system if your property doesn't have one.

A commercial roof is a big investment, so you need to do everything to protect it. By preventing these problems, you can help protect your investment and keep your property in good condition. 

Contact local commercial roofers for more info.