Common Causes of Roof Leaks

Common Causes of Roof Leaks (Commercial Roofs)

There will be leaks for pretty much every commercial roof at some point. That’s just a fact of life. It’s too important to sit on the sidelines when it comes to it because the sooner you handle it, the better off you’ll be in the long run. So let’s discuss some of the common causes of roof leaks!



A penetration is a hole cut to accommodate HVAC components, vent pipes, drains, skylights, roof hatches, antennas, etc. It is also the weakest point of the roof, making it the most susceptible to water damage. Sealing and maintaining them is essential.


Where a sheet of roofing material (whether it is single-ply, metal, built-up, etc.) meets another sheet, there is a seam. As a result of normal wear and tear or harsh weather conditions, fasteners or seams can separate over time, allowing water to penetrate into the building.

Water that’s Pooled

Rainwater that has accumulated on a roof for 48 hours after a weather event is called pooled or ponding water. When ponding water occurs on a roof, it indicates that the drainage system is not working correctly.

Membrane failure

Roof membranes for commercial buildings can crack, tear, split, or expose open lintels. Changes in temperature, excessive wear, UV penetration, wind, debris, and freeze-thaw cycles are all considered causes. These are the common causes of roof leaks. 

Deal with the issue at hand. Getting a commercial roof repaired is the most cost-effective and quickest way to fix a leak. That is a good first step in extending the useful life of your roof according to best-practice principles. If you need commercial roof repairs or inspection call Diversified Roofing. We specialize in all things commercial roofing. 


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