TPO membranes are common on commercial buildings because they are tough and they reduce solar warming. While this type of commercial roofing is durable, it isn't indestructible. Damage happens for a number of reasons, and when it does, you'll want to invest in prompt repairs. Here are reasons a TPO membrane starts leaking and the steps involved in making this type of commercial building roof repair.
The Damage That Threatens Your TPO Roof
You may have decided on a TPO roofing system because the seams are heat welded and have a lower risk of leaking. While the seams do bond together when heated, the bond can weaken over time due to sun exposure and age. As your roof gets older, gaps in seams become a possibility, and those gaps let in water when it rains.
Another place TPO membranes can leak is in the holes where screws come out. The individual membranes are attached to the roof using screws, and those screws can sometimes work out of the roof and leave a hole behind that rain can get in. Plus, a TPO membrane might be punctured or ripped due to foot traffic or impact by debris during a storm.
An Inspection Determines The Repairs Needed
Regular inspections can find damaged areas on your roof before they start leaking. That's the ideal time to have roof repairs done, as this prevents water damage to the insulation boards under the roof. If damage isn't caught before your roof leaks, you'll want to get an inspection right away to find the leaky area and to determine how to repair it.
During an inspection, the commercial roof repair contractor looks for loose seams, rips, and puncture holes. When those areas are found, they take core samples from the roof or use an infrared camera to determine the degree of water damage in the insulation boards under the leaky area.
If there is little or no water damage, patching the roof may be all that's needed. More widespread water damage could call for putting a coating on the roof to keep water out.
The Repairs That Stop Leaks And Water Damage
Patching membranes is a common commercial building roof repair. When you have a TPO roof, the patches can be heat welded to the membrane to cover the hole or rip. However, one of the most important steps in patching a TPO roof is to prep the roof's surface first. This could involve a few steps, such as cleaning and priming the area. Taking time to prep carefully allows the patch to adhere well so it lasts a long time and keeps water from dripping down to the insulation.
If a coating is needed, the roofer helps you select the right kind. Silicone coatings are popular options, and these can be sprayed or rolled on top of your old roof. A coating is like having a waterproof blanket applied to your roof that keeps rain from leaking in and causing more water damage.