What's TPO roofing? Pros, cons and cost considerations.

Even if you haven't heard of TPO roofing, you've probably seen it before. But what exactly is TPO?

TPO (which stands for thermoplastic polyolefin) is a single-ply roofing membrane. Manufacturers produce TPO using a rubber-like thermoplastic. The result is a smooth, rubber-like surface, typically white or gray in color.

Since it first came onto the market in the 1990s, TPO has become a popular roofing material for commercial facilities. But it can be used in residential roofing as well.

Keep reading to learn more about this low-slope roofing system to decide if it’s right for your home.

TPO roofing systems have smooth, reflective surfaces. They generally come in black, white or gray, but other colors may be available.

Technically, TPO membranes are suitable for both residential and commercial roofing — but it's best suited for low-slope or flat roofs instead of slanted or steep roofs. For this reason, you don’t typically see TPO roofing on residential buildings (although homes with flat roofs may use it).

One of the biggest advantages of TPO roofing is that it’s heat-reflective and energy-efficient. The white surface reflects the sun’s UV rays. As a result, buildings with TPO roofing often don’t heat up as quickly and sometimes require less air conditioning.

In addition to reducing energy use, the manufacturing process of TPO is also environmentally friendly. The material is 100% recyclable, reducing waste and pollution.

TPO is also a durable roofing option. It's resistant to tears, punctures and chemical damage. You can also add flame retardants to make this roofing fire-resistant.

Although TPO roofing can be easier to install than other materials, it does have some downsides.

For example, TPO may not be suitable for areas with extreme temperatures. Studies have found that the membranes can sometimes break down with prolonged exposure to high heat.

TPO roofing is also water and chemical resistant — which means adding protective coatings can be challenging.

Heat-reflective and energy-efficient

Difficult to add protective coatings

Durable (resistant to tears, punctures and chemicals)

Can break down in extreme heat

100% recyclable

Lasts only 7-20 years

TPO is one of two types of single-ply roofing materials. The other type is ethylene propylene diene terpolymer (EPDM). EPDM is a similar rubber roofing material. TPO is sometimes more expensive than EPDM per square foot.

There are also several TPO roofing installation method options. For example, they can be mechanically fastened. Or, a contractor may use stone ballast or pavers, welding or adhesives. The installation method you choose may affect the final cost.

Once you’ve decided on TPO, another factor affecting the cost is your roof's size. A larger roof will require more material and will likely take a longer time to install, increasing the total cost.

Talk to a roofing contractor near you to get price estimates for different types of roofing, including TPO, PVC and EPDM. This will help you make the most cost-effective decision for your home and budget.

With proper maintenance, a TPO roof can last 7-20 years. In comparison, other roofing systems can last 30 years (like architectural shingles) or 40-100+ years (like metal, clay, concrete and slate).

However, several factors can impact your roof's lifespan. For example, you'll need to stay on top of maintenance, and your roof should also be installed correctly.

Help ensure your roof is attached properly by hiring a professional that’s qualified to install TPO roofing.

Installing a TPO roof is a complex process that requires an experienced professional. The installation process requires specialized tools and knowledge, and improper installation can lead to costly repairs down the line.

The best way to find a reputable and experienced roofing company is with Thumbtack. When you download Thumbtack, you can compare free quotes from local roofing contractors. But before you hire someone, make sure your contractor is licensed and insured so that you’re protected.