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Maintenance Issues for Flat Commercial Roofs

As a commercial building owner or manager, you understand the importance of maintaining your property. Your commercial roof is one of the most crucial components of your building, and you need to take care of it to ensure the safety and well-being of your occupants. Flat roofs are among the most durable types of commercial roofs on the market, but they are still prone to wear and tear over time. Addressing some common maintenance issues can keep your roof in good condition.

Ponding Water on Flat Roofs

Flat commercial roofs have a slight incline to allow water to drain off the surface. A lack of proper drainage can lead to ponding water, which can be detrimental to the roof's longevity. The added weight of water can put extra stress on the roof structure, leading to leaks or even a collapsed roof. Schedule routine maintenance and inspections with a commercial roofing contractor to prevent these issues and resolve drainage issues early.

Cracking and Alligatoring

Cracking and alligatoring are common issues when a roof is exposed to harsh weather conditions for extended periods. Flat commercial roofs can be particularly susceptible to these issues due to their extreme heat and sunlight exposure. If left unattended, these cracks and splits will only worsen, eventually leading to leaks. A commercial roofing contractor can identify these potential maintenance issues and apply preventative measures to reduce additional damage.

Punctures and Holes

Flat commercial roofs often experience foot traffic, heavy equipment, and debris. Punctures and holes on your roof can expose your building to water infiltration, leading to mold growth, humidity, and water damage. At the first sign of punctures and other damages, it's essential to call your commercial roofing contractor immediately to avoid these problems.


Flat commercial roofs tend to shrink over time due to exposure to different weather elements. It occurs mostly in single-ply membranes that use ethylene-propylene-diene-monomer or TPO systems, resulting in seam separation, leaks, and other significant issues. Regular maintenance and checks can help address shrinkage issues before they become severe.

Thermal Expansion

Thermal expansion can cause significant damage to flat roofs on larger industrial buildings. The roof's material will naturally expand and contract as the temperature changes, leading to extra stress on the seams and fasteners that attach the roof to the roof deck. Partnering with a commercial roofing contractor to ensure regular inspections and maintenance would help mitigate severe roof deterioration due to thermal expansion.

Proper commercial roof maintenance is critical to ensure the safety and well-being of your building's occupants. Commercial roofing companies understand the necessity of maintaining your roof efficiently and cost-effectively. By identifying potential maintenance issues early on and partnering with a commercial roofing contractor, you can extend the life of your roof and keep your occupants safe and comfortable.