TPO, or thermoplastic polyolefin, is a synthetic roofing material that is used most often for commercial buildings. This newer roofing system has three main components, including a structural deck, thermal insulation barrier, and waterproof membrane. The waterproofing material of a TPO roof is polymer based, which is a type of thermoplastic. This is a part of TPO roofing membranes.
There are many advantages to a TPO roofing system such as being heat-resistant and environmentally-friendly. But like any roofing system, it will need repairs, especially over time. In order to have a long life cycle, a TPO roof, like any other roof, will need to be regularly maintained and repaired.
Upkeep and repairs will ensure that TPO roofing systems remain durable and functioning. Because TPO roofs are a flat type of roofing system on commercial buildings, ponding can occur. Ponding is when water pools in one flat spot. Low spots on the roof can cause ponding and should be repaired as soon as possible to prevent further damage. Roof plaster can be applied to fill in the low spots and prevent pooling of water on the roof. Also check drains if you notice ponding, as a clogged drain could be the source of water backing up onto the roof. If ponding is still happening, repitching is the next step to make sure water has a slight slope to drain off the roof.
Another common repair TPO roofing systems may require is patching. A puncture in the roofing material can cause unwanted leaking. A patch over the hole will correct the problem. But patching can be difficult as it requires a hot welding tools and the correct patching material.
All commercial roofing repairs are best left to the professionals to ensure the job is done correctly.
Cleaning of a TPO roof is also required regularly so that the roofing material is best able to hold repair jobs. Over time, ultraviolet rays can break down the seams of TPO roofing. Special TPO tape is required to seal and fuse seams together so the roof is durable once again.