{"id":124570,"date":"2026-05-13T19:45:40","date_gmt":"2026-05-13T19:45:40","guid":{"rendered":"https:\/\/generalroof.com\/?p=124570"},"modified":"2026-05-13T20:18:07","modified_gmt":"2026-05-13T20:18:07","slug":"how-long-does-a-commercial-roof-last","status":"publish","type":"post","link":"https:\/\/generalroof.com\/how-long-does-a-commercial-roof-last\/","title":{"rendered":"How Long Does a Commercial Roof Last? Lifespan by Roofing Type"},"content":{"rendered":"\n

Most commercial roofs last somewhere between 15 and 35 years<\/mark>. That\u2019s a big range, which is annoying but honest.<\/p>\n\n\n\n

A clean, well-drained TPO roof that gets inspected every year can age very differently from a flat roof with ponding water, cracked seams, clogged drains, and HVAC crews walking across it every month.<\/p>\n\n\n\n

So the better question is not only “how long does a commercial roof last?” It\u2019s also “what kind of roof do I have, and what condition is it actually in?”<\/p>\n\n\n\n

Commercial roof lifespan by material<\/h2>\n\n\n\n
\"General<\/figure>\n\n\n\n

These are normal planning ranges, not guarantees. A roof can beat these numbers if the system was installed well and maintained. It can also fall short if drainage is poor or small issues sit too long.<\/p>\n\n\n\n

Commercial roof type<\/th>Typical lifespan<\/th><\/tr><\/thead>
TPO roofing<\/td>20 to 30 years<\/td><\/tr>
PVC roofing<\/td>20 to 35 years<\/td><\/tr>
EPDM roofing<\/td>25 to 35+ years<\/td><\/tr>
Modified bitumen<\/td>15 to 25 years<\/td><\/tr>
Built-up roofing<\/td>20 to 30 years<\/td><\/tr>
Metal roofing<\/td>30 to 50+ years<\/td><\/tr>
Roof coating over a qualified existing roof<\/td>5 to 15 years<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Most commercial roofs in the Bay Area are low-slope or flat, so single-ply systems like TPO, PVC, and EPDM show up a lot. GAF\u2019s single-ply membrane guide<\/a> explains the main differences between TPO, PVC, PVC KEE, and EPDM. EPDM also has a long record in commercial roofing, with Carlisle noting that EPDM has been used on low-slope roofs for more than 50 years<\/a>.<\/p>\n\n\n\n

If you want the residential side too, we covered that separately in our guide on how long a roof lasts in California<\/a>.<\/p>\n\n\n\n

Why commercial roof lifespan varies so much<\/h2>\n\n\n\n

Commercial roofs usually don\u2019t fail all at once. They wear down quietly.<\/p>\n\n\n\n

A seam opens a little. A drain clogs. Water sits longer than it should. Flashing around a curb gets brittle. Someone servicing rooftop equipment drops a tool or drags a panel across the membrane. None of that sounds dramatic until the ceiling stain shows up.<\/p>\n\n\n\n

The biggest things that affect commercial roof lifespan are:<\/p>\n\n\n\n