How Long Will a Commercial Flat Roof Last?


Commercial buildings need to function at their best at all times. A faulty roof can cause a serious headache for the business owner and it can also put the occupants inside at risk. Flat roofing is commonly used on low-sloping commercial buildings, but many property owners find themselves wondering how long a new roof will last.

Below, we'll go over the key characteristics that influence the longevity of a flat roof. By understanding these factors, you'll know what to expect out of your installation so that you can have peace of mind your building will continue to perform for years.

Commercial Flat Roofing Materials

The quality of materials used is the single most important factor that determines how long a flat roof will last. It's important to choose reputable materials from respected manufacturers like GAF, as these brands will offer long-lasting warranties.

There are various commercial roofing options available and each has a different lifespan. Some of the most commonly used options include:

  • EPDM: EPDM is one of the longest-lasting roofing materials and when properly cared for can continue to perform for 50 years.
  • TPO: TPO is quite similar to an EPDM roof, however it has a slightly shorter lifespan of 20-30 years on average.
  • Mod Bit: Mod bit roofs only tend to last for 20 years, but they can be easily replaced and renewed by a skilled professional.

Installation Quality

In addition to the material used, it's important to hire a professional installer for the job. While there are many roofers out there, choose a team with extensive experience with commercial applications. Be sure to also look for industry certifications and affiliations, as these demonstrate competency within the field.

Local Climate

All roofing materials can be heavily affected by the local climate. In more extreme places with high humidity, excessive UV radiation, or excessive precipitation, the lifespan of flat roofing can be reduced. In more mild climates, maximum longevity can be expected.

Get a Quote for a New Flat Roof Today

If you're interested in extending your commercial building's lifespan with a high-quality flat roof, rely on the professionals at Millersberg Construction, LLC. With over 30 years of combined experience, Better Business Bureau accreditation, and an inventory of premium commercial roofing materials, you can trust that we're the best commercial roofing company in Minnesota. Contact us now to get started with a quote.