Commercial Roofing FAQ

Still Looking for Answers to Your Questions?

Our team is happy to answer them if you call us, but we have also included some of the most commonly asked questions our clients ask us below to help you find what you’re looking for. If you still have questions lingering, feel free to contact us. 


Q: Does M.W. Morss Roofing, Inc. do residential roofing?

A: No. We work only on commercial and industrial, flat roof projects.

Q: What roofing system does M.W. Morss Roofing, Inc. install?

A: We install only the Duro-Last Roofing System, a custom fabricated or rolled goods roofing membrane. We are a Platinum Contractor with nearly 40 years of experience installing Duro-Last and nearly 40 million square feet installed. M.W. Morss Roofing, Inc. is one of the top 3 contractors in the United States in Duro-Last systems installed.

Q: What type of warranty comes with a Duro-Last Roofing System?

A: Duro-Last leads the roofing industry with comprehensive warranty coverage. The most common are Duro-Last's Supreme Warranties, which include consequential damage coverage (the most common term is a 15-year NDL) or Basic Warranties. Fill out our lead form to the right  if you would like a sample warranty. 

Q: How will I know if I need a tear-off or a re-roof?

A: Our estimator will perform an on-site inspection of your roof. At that time, he will core the roof to inspect the layers that are on your building. That inspection will reveal the saturation level of the roofing materials under your top layer of roof and help decide if you need a tear-off or re-roof.

Q: Why do I need at least 5.2" of polyiso insulation for a tear-off?

A: Michigan follows ASHRAE standards. The minimum R-value for non-residential buildings in our climate zone is R30 (climate zone 5 with insulation entirely above the roof deck). Currently, two layers of 2.6" polyiso insulation achieve a total R-value of R30.

Q: Do I need to achieve an R30 for a re-roof?

A: No. The code applies to tear-offs. It would be the customer's discretion to add R-value to the building in a re-roof application.

Q: Is M.W. Morss Roofing, Inc. a union company?

A: Yes. Our roofers are members of Local 149 and our sheet metal workers are members of Local 80.