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Commons Causes of Leaks on Flat Commercial Roofs

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The roofs on commercial buildings are typically quite large in size, so it is essential to pay attention to the roof and prevent major issues. One problem that commercial roofs can have is leaks. A leaking roof can lead to structural damage, soaked insulation, ceiling and wall stains, and the growth of mold and mildew. Thus, it is important to identify issues early and have repairs made before a leak gets larger in size and causes more damage to the building. Roof inspections by an experienced roofing contractor can help, along with taking minor leaks seriously and having them repaired right away. Some of the most common causes of leaks in commercial roofs include:

Problem with the Drainage System

The majority of commercial buildings have flat roofs, so water does not run off the roof the same way it would on a building with a sloped roof. When there is an issue with a commercial roof's drainage system, puddling can occur after heavy rainfall or when winter snow begins to melt. The development of standing puddles in specific spots for an extended period can saturate areas of the roof, cause the roofing material to break down, and ultimately lead to leaks. A commercial roof inspection by a roofing contractor may help you discover areas prone to puddling or a clogged or damaged drainage system. If your roof develops a leak, schedule roofing repair right away.

Flashing is Damaged

Flashing is is a type of roofing material, typically made of metal, that is used to create a tight seal around the perimeter of a flat commercial roof. Severe weather or very high winds can damage the flashing on a commercial roof, leaving seams exposed and increasing the risk of leaks. It is also possible for flashing to loosen over time as it ages, which also increases the likelihood of leaks. Replacing old or damaged flashing typically solves the problem and prevents future leaks.

Pipes and Openings are Not Properly Sealed

Commercial roofs often have vents, pipes, and appliance openings. When a commercial roof is installed, these areas are carefully sealed to prevent any moisture from getting in. However, over time, the material used to seal these areas can break down, and when that happens, leaks can occur. If your commercial building has a roof leak, you should hire a commercial roofing contractor to inspect the pipes and openings and reseal them if the original sealant has broken down. 


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