Why Is My Flat Roof Cracking?

At some point in your building’s lifetime, your flat roof will need to be replaced or repaired. The lifespan of a flat roof is usually 10 to 15 years. The tricky part with a flat roof is determining whether it needs minor repairs or a full replacement.

Flat roofs require regular inspections and maintenance so that problems can be addressed early. If damage appears, scheduling professional roof service right away can help prevent larger structural problems. In many cases, issues like leaks, cracks, or membrane damage can be fixed with professional commercial roof repairs before a full replacement becomes necessary.

Certain roofing problems can be dangerous because they may compromise the integrity of the building. Regular inspections by a professional roofing contractor are the best way to keep your flat roof in good condition.

Leaks And Moisture

Leaks and moisture are common with flat roofs because water can collect on the surface and does not drain as easily as it does on sloped roofs. When water sits on the roof for long periods of time, it can begin to seep into the roofing membrane and cause damage.

Moisture can lead to mold, fungus, and interior water damage. If leaks are not repaired quickly, the structure of the building can become compromised. When this happens, professional commercial roof repairs are usually needed to locate the source of the leak and restore the roof membrane.

Moisture buildup can also cause algae and bacterial growth on the roof surface. Treatments such as Roof-A-Cide roof treatment can help prevent mold, algae, and mildew from damaging the roofing system.

Flashing

Damaged Flashing happens when an asphalt flat roof starts to pull away from the edges and corners of your roof as a byproduct of your roof expanding and contracting over a period of time due to being in the sun.

The roof flashing strips hold the different components of the roof together—if it’s loose, it’ll cause leaks. The seal can be renewed by removing the old one completely and sealing it back up again. If there is too much damage it may need replacing.

Cracks In The Roof

Flat roofs experience more pressure than sloped roofs because water, debris, and foot traffic remain on the surface. Over time, this stress can cause the roofing membrane to crack.

Cracks can allow water to enter the roof system and damage the layers underneath. If cracking becomes widespread, it may be a sign that the roof is reaching the end of its lifespan. In these cases, a full commercial roof replacement may be the best long-term solution.

Pooling Water

Pooling water happens when a flat roof is not completely level. Water collects in low areas and adds pressure to certain parts of the roof.

Standing water can cause mold growth, algae buildup, and faster deterioration of the roofing material. In some situations, protective coatings can be applied to help seal the roof and prevent water from penetrating the surface. Applying silicone roof coatings is one common way to improve waterproofing and extend the life of a flat roof.

A roofing professional can determine whether pooling water is caused by clogged drains, structural movement, or membrane damage.

Blistering

Blistering happens when air or moisture pockets get trapped between the layers of the roof membrane or between the membrane and the roof deck.

The pockets expand and stretch the membrane as the sun heats the roof. Unless the blisters show signs of more serious damage, they’re sometimes best left alone. If they’re in an area that is getting foot traffic, the membrane has cracked, the surface is coming off, or the blister is near a seam then they’ll need to be dealt with.

In order to repair a blister in a roof, you’ll need new membrane material that will extend at least six inches around the edges of the blister after it’s been cut out.

Alligatoring

Alligatoring is a surefire sign that your roof is aging. The asphalt for your roof has started to age and lose it’s elasticity since the sun’s UV rays have dried the roof material causing it to crack and bubble, resembling alligator skin.

In order to fix a roof that is alligatoring, you’ll need to clean it of particles and dust, then add a compatible primer and lastly, it’ll need a new coating on the roof.

Buckling In The Membrane

The membrane on a flat roof is usually installed as one continuous layer. As the building settles over time, the roof may shift and cause the membrane to buckle.

Buckling can weaken the roof and make it more likely to leak. This type of damage should always be inspected by a professional roofing contractor to determine the best repair method.

Need Flat Roof Repair or Replacement?

If your flat roof is leaking, cracking, or showing signs of wear, it is important to have it inspected by a professional. Small problems can often be repaired, but older roofs may require replacement to prevent structural damage.

ABC Roofing provides expert commercial roofing services, including repairs, coatings, and full roof replacement throughout South Florida.

For all your roofing requirements and questions, contact ABC Roofing in Coral Springs today to schedule an inspection.

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