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Frequently Asked Questions

Got questions about commercial roofs and the Duro-Last® Roofing System? We've got answers!

Known as the “World’s Best Roof®”, Duro-Last® is a single-ply PVC roofing membrane available as a custom-fabricated system or in standard roll sizes as well as custom-cut roll lengths. Ideal for flat and low-sloped applications, Duro-Last membranes are extremely durable, highly reflective and resistant to many chemicals. Duro-Last membranes are also self-extinguishing after fire exposure and require minimal maintenance for long-term performance. 

Custom-fabrication saves time, increases installation quality and protects buildings. And it's what sets Duro-Last® apart. When you install a custom-fabricated Duro-Last Roofing System, up to 85% of the seams can be completed in our factory-controlled environment before the roofing system is delivered to the job site. Duro-Last also manufactures custom-fabricated accessories, providing an easier and faster installation at critical transitions and watertight aesthetics.

Duro-Last® leads the roofing industry with comprehensive warranty coverage, including 25- and 30-year options, providing unparalleled protection for commercial roofing applications. With warranty options which include material and labor coverage as well as hail and/or high wind protection, we have a level of coverage right for any job. And as the first manufacturer with a warranty to expressly cover consequential damages on commercial buildings, we continue to work hard and stand by every square foot.

Visit to learn more about our full range of warranty options.

Duro-Last® Roofing Systems are available in white, gray, dark gray, tan and terra cotta colors. Additionally, our Duro-Tuff® and Duro-Fleece® roofing systems are available in a variety of colors such  white, light gray, charcoal, patina, dark green, light tan, copper, blue, midnight bronze, brown, bright red and colonial red. Whether you want your roof to stand out or blend in with the surrounding aesthetic, you can count on Duro-Last to protect your building with style.

Duro-Last® Roofing Systems can be installed over a variety of pre-existing roofing systems, provided the integrity of the current roofing system has not been severely compromised, compatible underlayments are utilized when necessary and local building codes allow for a recovered roofing system. Contact a Duro-Last Sales Representative today to schedule a roof evaluation, which will determine if your roof is an ideal candidate for an overlay.

Duro-Last® offers a Recycle Your Roof program for mechanically attached Duro-Last Roofing Systems which have reached the end of their useful life. Through this program, the roofing system is removed from the roof, fasteners are cut from the material and it is shipped back to Duro-Last for recycling into new products such as ROOF-TRAK® walkway pads, PROFLEX® concrete expansion joints and Protect-All® flooring. To learn more about the Duro-Last Recycle Your Roof program, contact a Duro-Last Sales Representative or call Duro-Last at 800.248.0280.

Incorporating roof washing into your routine maintenance plan can help maintain the appearance of your roofing system as well as solar reflectivity on white membranes. Utilizing Wash Safe Roof Wash from Duro-Last® can keep your rooftop free of biological growth, and a non-sudsing, non-abrasive cleanser such as Spic and Span® or Simple Green® can keep your rooftop clean of dirt and environmental debris. Solvent-based cleaners cannot be used. View the Duro-Last Care and Maintenance Guide and contact the Duro-Last Quality Assurance Department at 866.284.9424 to learn more about cleaning and maintaining your Duro-Last Roofing System.

To learn more about the advantages of installing Duro-Last® Roofing Systems, visit our Contractor Information Page or call 800.248.0280 to be connected to a Duro-Last Sales Representative in your region. They will outline the authorization process and share information about upcoming installation training classes in your region.

While Duro-Last® Roofing Systems are designed to withstand the elements and provide long-term protection, general routine maintenance goes a long way in protecting your overall investment. In addition to regular inspections by a roofing professional, as well as any inspections required with your Duro-Last Warranty, owners should plan to check their roof at least twice per year for potential damage and regular clean-up. Download the Duro-Last Roofing System Care and Maintenance Guide & Owner Checklist for detailed information and checklists to help guide the care of your roofing investment.

System specifications, product data sheets and detail drawings for all Duro-Last® products can be found on the Duro-Last Specifications Library. You can also find information about all codes and approval standards that Duro-Last meets, as well as sample warranty documents.

Duro-Last® is an American company which primarily serves authorized contractors throughout the United States and Canada. To learn more about product availability in your region and potential international opportunities, contact a Duro-Last Sales Representative at 800.248.0280.

While intended for flat and low-slope applications, Duro-Last® Roofing Systems can be installed on any roofing surface with proper design. Additionally, our 15-Year and 20-Year Residential Warranties offer protection for non-commercial applications. Contact a Duro-Last Sales Representative to learn more about roofing solutions from Duro-Last for your home.

The cost of a roof largely depends on the condition of the structure and materials being used. The cost to put a roof on a new construction building is much different than the cost to put a roof on an existing structure requiring a full tear-off of existing materials. Duro-Last® Sales Representatives and our network of authorized contractors are available to provide roof evaluations and estimates for your specific building needs, contact us today at 800.248.0280.

Roof leaks are tricky and can lead to more serious damage if not addressed quickly by trained professionals. If you have a Duro-Last® Roofing System currently under warranty on your structure and have identified a leak, you must call the Duro-Last Warranty Services Department at 866.284.9424 within seven to 14 days of discovery to schedule an inspection and repair. If your roof is out of warranty or you do not have a Duro-Last Roofing System but would like assistance in finding a contractor qualified to address the immediate issue, contact us today at 800.248.0280.

Polyvinyl chloride (PVC) roofing, is a single-ply membrane used on flat or low-sloped roof surfaces. PVC roofing systems are typically comprised of two layers of PVC film and a fabric scrim providing strength and durability. While available in a wide range of colors, white PVC roofs offer superior reflectivity compared to darker roofing systems and PVC roofs are effective in all climates. Additionally, PVC membranes are flexible, lightweight, resistant to most chemicals and self-extinguish after fire exposure. To learn more about the benefits of PVC roofing, as well as the enhanced features of Duro-Last® solutions, check out the Duro-Last Difference.