Spotting a leak in a large commercial building roof can be like finding a pigeon in a snowstorm. For this reason, leaks are often discovered after they've done substantial damage. Replacing a commercial roof is expensive. Repairing the collateral damage from a runaway leak will cost you even more.
One way to prevent leaks is to conduct preventive maintenance on the roof membrane. You would not use an umbrella with holes in it, so why leave your roof's protective layer open to water damage?
Preventing Leaking in Commercial Roof Membranes
More buildings are using water sensors to detect leaks in the plumbing system. Finding leaks in a commercial roof is more of a challenge. Often, the building managers are alerted only after structural damage has occurred. At this point, engineers show up with ultrasonic or thermal imaging equipment to find the sources of the leaks.
Instead of spending money searching for invisible leaks, you can save a lot of money by keeping them from happening. Commercial roofing contractors conduct regular preventive maintenance on the roofing membrane.
Spotting Signs of Leaking
Membranes are regularly exposed to the elements and mechanical stress. The main rubber roof materials used in single-ply membranes, TPM and EPDM, are prone to shrinkage and seam stress. PVC has a higher heat resistance, and the seams can be seamlessly heat-welded together but it, too, can eventually buckle under stress.
If you notice blisters forming, consider it an early warning sign. A blister forms when the seal between the membrane and roof breaks. The loss of adhesion is typically caused by UV rays or excess moisture. As the opening fills with air or water, a bubble forms. Blisters can lead to:
- cracking that can lead to tears
- stress on streams
- buckles in overlapping layers
Fixing Roofing Membranes
Your commercial roofing contractor will recommend immediate repair before leaks happen. Depending on the extent of the damage, the affected area may be replaced and new sealants applied. Coating restoration is another option.
Many of the weaknesses of older single-ply membranes can be addressed through more advanced coatings. If the membrane is really worn, your roofer may recommend a complete replacement.
A new membrane or coating will provide better performance, including:
- High temperature resistance
- High solar reflectivity
- Higher tensile strength
With these improved properties, your roofing membrane will provide improved water protection for many years.
Contact a commercial roofing company like A-Denver Roofing Company to learn more.
