Storm damage to a commercial roof is a serious issue that can compromise the safety of your building and its contents. Unlike residential roofs, commercial roofs often have unique materials and structures that require specialized repair techniques. A swift and professional response is essential to prevent costly interior damage and business disruption.
Common Types of Storm Damage on Commercial Roofs
Commercial roofs, particularly flat or low-slope roofs, are vulnerable to specific types of storm-related damage.
Wind uplift
Strong winds can get under the edges of a commercial roof membrane, creating an upward pressure that can cause the membrane to detach from the deck. This is known as wind uplift , and it can lead to large sections of the roof blowing off, exposing the building’s interior.
Hail impact
Hail damage on a commercial roof can be subtle but devastating. On flat roofs, hail strikes can cause dents and cracks in the membrane, which may not leak immediately but will weaken the material over time. On metal roofs, hail can cause dents, chipping away at protective coatings and leading to rust.
Water ponding and leaks
Heavy rainfall can lead to water ponding, where water collects in low-lying areas of a flat roof. While most commercial roofs are designed to handle this, clogged drains or damaged membranes can cause the water to seep through, leading to leaks and structural damage.
Repair Methods by Roof Type
The repair method for storm damage depends on the type of roofing material.
Flat roofs – patching membranes
For minor punctures, rips, or tears on a flat roof (such as a built-up roof or modified bitumen), a contractor will typically apply a compatible patching material. This is usually a layered, sealed patch that adheres to the existing membrane and restores the roof’s integrity.
Metal roofs – sealing seams and dents
On commercial metal roofs, the most common repairs involve sealing seams that have separated and flattening out dents. Dents may not seem like a big issue, but they can trap water and cause the metal to rust. A professional will use specialized tools to restore the metal’s shape and re-apply a protective coating.
TPO/EPDM – heat-welded patches
For TPO (thermoplastic polyolefin) or EPDM (ethylene propylene diene monomer) roofs, repairs are made by applying a new piece of membrane over the damaged area. For TPO, this is done with a heat-welding process , which creates a seamless, watertight seal. For EPDM, a strong adhesive is used to bond the patch.
When Repairs Aren’t Enough
While repairs are effective for minor damage, they are not always the best solution.
Extensive damage requiring replacement
If the storm damage is widespread—for example, if a large portion of the roof membrane has been torn off by wind—a full replacement may be more cost-effective than attempting to patch multiple areas. A professional contractor can assess the total damage and provide a recommendation.
Cost-benefit of reroofing vs repairs
Continual repairs can become a drain on your budget. If your roof is already nearing the end of its life, a full reroofing project is a better long-term investment. It provides a fresh start, a new warranty, and peace of mind that your business is protected for decades to come.
Importance of Professional Commercial Roofers
Choosing a specialized contractor is one of the most important decisions you can make after a storm.
Safety and expertise
Commercial roofing projects are complex and dangerous. A professional team has the training, equipment, and experience to safely and effectively repair your roof, regardless of its type or the extent of the damage. They also have the expertise to spot hidden issues you might miss.
Documentation for insurance claims
A reputable commercial roofer will be experienced in working with insurance companies. They can provide a detailed, professional assessment and estimate that is crucial for a successful claim. This documentation helps ensure that all damage is accounted for and that you receive the proper compensation for repairs.
Experiencing storm damage to your commercial roof? Masterpiece Roofing specializes in commercial roof repairs and can provide a comprehensive, free inspection to get your business back on track. Contact us today for an expert assessment.