A leading solution for commercial roofs across the country, TPO is typically comprised of a single layer of thermoplastic polyolefin made with synthetic rubber and additional fillers such as carbon fiber, fiberglass, and other materials. These fillers give TPO roofs impressive flexibility, strength, and durability. While there are other options in the single-ply roofing category, TPO continues to grow in popularity as it brings a number of different advantages to building owners.
Key Benefits of TPO Roofing Systems
TPO roofing systems have also become a favorite among roofing contractors throughout the country, and for good reason. They are a cost-effective roofing system that can deliver the long-term protection buildings require while still being easy to install. A few other key benefits they provide are:
- Low Maintenance
- Energy Efficient
- Versatility & Strength
- Bacterial Resistant
Know The Drawbacks
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First, TPO roofing systems require maintenance ahead of any winter season. While preventative maintenance is recommended for any roof, it is a critical piece to meet to ensure your TPO roof can last confidently throughout the entire winter season without concern. It’s also key to keep in mind that standing water can be detrimental to a TPO roof. If the roof does not properly divert the moisture, you could soon be dealing with a leak or a failing roof.
TPO roofing systems are well known for their energy efficiency, due to their reflective white topcoat that keeps buildings cooler during the summer. However, in colder climates, a darker roof may reduce heating costs in the cooler months by drawing heat into the building.
The only other thing worth mentioning is that these membrane systems are less fire-resistant than PVC. To learn more about PVC membranes and how they compare to TPO, visit our blog: TPO or PVC – What’s the Difference?
Application
TPO roofing systems can be applied in several ways. The three most common are fully adhered, mechanically attached, and ballasted. No matter the application, TPO roofs will always be heat-welded at the seams. This creates a monolithic bond.
Under the TPO material, you will need insulation foam, of which the depth will vary depending on the client’s roof and needs. TPO comes conveniently rolled and in assorted sizes. You will want to ensure you double check the measurements to be certain you have enough material for the entire project ahead of time. With fasteners and plates, which also come in varying sizes, you will be able to ensure proper securement of both the insulation foam and TPO material themselves.
Preparing your roof ahead of the TPO application is imperative to its success. A clean roof, free of any debris or damage, is necessary. Once the roof has been meticulously cleaned and prepped, you will be ready to install the insulation foam. Staggering the foam is best practice to ensure better insulation. Once you have installed the insulation foam, you will need to cut out any places where there are drains or pipes. With your insulation completely in place, you will be ready to roll out your TPO. Starting at the edge of the roof, in a straight line, you will unroll the TPO.
When you are certain the TPO is straight and free of any wrinkles, you can begin to secure it with your plates and fasteners. Overtightening of the plates and fasteners can damage your insulation foam and create water intrusion problems down the road. Be sure you have the proper drill for this application. Once all the TPO is secured, you can begin heat-welding the seams with an automatic heat welder. Hand welding any joints, or areas where drains or pipes lie, is recommended to provide the best seal.
A proper application of a TPO roofing system will help ensure your client has a roof that can last for decades with a proper maintenance program.
TPO Offers Protection You Can Rely On
TPO roofing systems are continually being improved in many ways and can be heavily relied on for a trusted roofing system. While there are some disadvantages that effect some more than others, it offers superior performance in almost any climate when in the hands of the right roofing contractor.
This cost-effective, resilient roofing system has much to offer roofing contractors and building owners and is considered one of the leading options for roofs throughout the country.