How Long Will Your Roof Last?

Posted in CAD, Roofing

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The numbers below were cited for commercial roofs, but we see no reason for them not to apply to residential roofs as well. Information source: https://www.phpsd.com/blog/7-tips-for-making-your-commercial-roof-stand-the-test-of-time .

Average Lifespan

Of course certain roof types will last longer because of the durability and the inherent quality of some materials. Many of these roof types, particularly the single ply membranes, are now available in more light reflective colors or laminates. Ask your supplier what your options are:

  • Metal roofs should be expected to last around 40 to 50 years
  • Spray foam roofs (SPF) can last 50 years or more
  • Green roofs can last anywhere from 30 to 50 years
  • Blue roofs are expected to last 35 years
  • Concrete tile roofs can last 50 years or more
  • Ethylene propylene diene monomer single ply membrane (EPDM), rubber roof used in low slope applications, can last 10 to 40 years
  • Poly vinyl chloride single ply membrane (PVC), most popular of the flat roof materials, can last 10 to 50 years
  • Thermoplastic polyolefin single ply membrane (TPO) can last 15 to 30 years or more
  • Modified bitumen (MOD BIT) roofs are expected to last 10 to 25 years
  • A 5-ply built up roof (BUR) should last 25 years, depending on the number of plys
  • Lightweight insulating concrete (or cellular) roof decks typically last 30 years or more

If you’re in the roofing industry and need roof drawings generated (either from sketches or from Google Earth’s satellite view), we have the skill and the track record. One of the largest roofing companies in the US is a long-term customer. To discover more, go here. See you on the other side!

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Lucky Balaraman

Executive Director, The Magnum Group

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