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How Long Does a Flat Roof Last?

July 20, 2025

For those living in the Philadelphia area in a row home, this information may pertain to you. A flat roof can last a long time if it’s built right and taken care of. Most flat roofs last between 10 and 30 years. Some can last even longer, but that depends on the kind of material used, how the roof was put on, the weather in your area, and how well the roof is maintained. Not all flat roofs are the same, so how long one lasts will vary. Figuring out what material and flat room are right for you should be left up to the professionals such as Cover All Exteriors.

Rubber and plastic roofs are popular for flat roofs. One kind is called EPDM, which is a rubber roofing material. EPDM roofs can last 20 to 30 years. They’re tough and can handle sun, rain, and wind well. Another kind is TPO, which is a white roofing material that reflects heat. TPO roofs usually last 15 to 25 years. PVC is another white roofing option that can last up to 30 years. TPO and PVC are both good at staying strong and not tearing, and they’re lighter and easier to work with than older roofing materials. 

Weather matters a lot when it comes to how long a flat roof will last. If you live somewhere that gets a lot of sun, rain, snow, or storms, your roof might not last as long. Sun can wear down some materials, and freezing temperatures can cause cracks. Flat roofs don’t drain water as well as sloped roofs, so if water stays on the roof too long, it can cause leaks. That’s why it’s important that the roof is made to drain water properly. How the roof is put on is just as important as the materials. Even if you buy the best roofing material, it won’t last if it’s not installed correctly. Flat roofs need to be sloped just a little so that water can drain off. If the roof is flat with no slope, water can sit on it and cause damage. That’s why it’s important to hire a local professional who knows how to install flat roofs the right way. Luckily for those in the Philadelphia and surrounding suburbs, Cover All Exteriors has installed a number of flat roofs successfully. Taking care of the roof is also very important. You should check your roof once or twice a year to make sure nothing is wrong. Look for cracks, soft spots, or water sitting on the surface. Clean off leaves, branches, or dirt, and make sure the drains aren’t clogged. Fix small problems quickly so they don’t become big ones. 

Overall, flat roofs can last anywhere from 10 to 30 years or more. How long your roof lasts depends on what it’s made of, how it’s installed, the weather in your area, and how well you take care of it. Choosing good materials, hiring a skilled roofer, and doing regular checkups can help your flat roof last as long as possible and save you money over time. Getting any repairs that need to be done in a timely fashion could also save you a lot of money in the long run. If you have questions about materials or which flat roof is best for you, contact Cover All Exteriors today for a free estimate on your roof.

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