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"Price was right and service was perfect. They were onsite by 7am every morning, worked hard and cleaned up every day. Great job guys." - Jack R
Replace or RepairOur teams are trained
exclusively for commercial leak investigation & repairs, maintenance,
and implantation.
Learn More
Eco-Friendly
JSC proudly uses Duro-Last®
Roofing, an eco-friendly and recyclable single-ply membrane known for long-term performance.
Made in the USA
Duro-Last® is the world's largest
manufacturer of custom fabricated PVC commercial roofing systems.

JSC Commercial Roofing proudly installs Duro-Last® — The "World's Best Roof"®
Duro-Last's
® custom-prefabricated, reinforced, PVC commercial roofing system is ideal for any flat roofing or low-sloped roofing application. Being made of a lightweight material it only weighs 1/3 lb/sq ft, compared to a rock roof that is 10 lbs/sq ft. Extremely durable and easily installed without disruption to daily operations, the Duro-Last single-ply roofing system is also leak-proof, resistant to chemicals, fire and high winds, and virtually maintenance-free. With over 33 years in the industry, Duro-Last
®, the superior commercial roofing, is the top choice for New Hampshire building owners, architects, roof consultants, and specifiers.
Every Duro-Last® PVC roof
is precision fabricated.
Duro-Last's® roofing system
is made of a PVC membrane.
Duro-Last’s® roofing system
installation is quiet and safe.
Duro-Last’s® roofing system
is ENERGY STAR® certified.
Duro-Last's® 15-year full
warranty is transferable.
Prefabricated
Every Duro-Last® single-ply flat roofing system is measured and manufactured to exact size, accommodating every rooftop penetration. Prefabricating the vinyl roof PVC membrane in our controlled factory environment eliminates up to 85% of seaming that is done on-site during rooftop installation, and improves the long-term performance of the roofing system. The Duro-Last® roofing system also comes complete with all accessories included. Unlike other EPDM or TPO roofing materials that are often cut on premises, Durolast PVC roof material is prepared with a precise attention to detail ensuring an excellent fit and delivering worry-free, leak-proof protection. Considering another type of industrial roofing material such as rubber, asphalt, EPDM or TPO? Talk to us! We can assist you in in developing specifications for your commercial roofing project.
Durable
The Duro-Last® roofing system, made from a PVC roof membrane, is resistant to fire, chemicals, grease, high winds, and punctures, and easily accommodates wide temperature extremes. PVC roofs are virtually maintenance-free compared to other flat roofing systems such as EPDM or TPO roofing materials that sometimes require rigorous maintenance and offer far less durability. Duro-Last's custom PVC vinyl flashing components resist ponding water and help solve roof problems before they can occur. Plus with Duro-Last's available Roof-Trak® Protective Walkway System, heavy equipment and maintenance traffic are easily managed.
Installed With No Disruptions
Building occupants will hardly know a new roof is being applied, because installation is quiet and safe. Unlike EPDM, TPO or other flat roofing materials, our PVC roof membrane is mechanically-attached to the deck; edges and vinyl roof components are heat-welded together to complete the watertight, monolithic roofing system installation. There are no loud machines, no hazardous materials, no noxious fumes, no hot tar, and no mess. Because it's made from lightweight vinyl, a new Duro-Last roofing system can often be installed over an existing roof without an expensive tear-off, virtually eliminating dust or falling debris that could interfere with building activities.
Energy-Efficient
PVC roofing systems make an important contribution to sustainable buildings, and Duro-Last is proud to be a charter partner in the EPA's ENERGY STAR® Roof Products Program. Duro-Last is a leader in cool roofing solutions, and our Cool Zone® brand addresses the growing nationwide interest in sustainable roofing systems. Of the white, single-ply products rated by the ENERGY STAR program, only the Duro-Last Cool Zone roofing system has retained reflectivity of greater than 85% after three years of weathering (based on ENERGY STAR roof products testing criteria).
Click to download PDF sample documents of our warranties:
15-YEAR COVERED ROOF ASSEMBLY
260 kb PDF

15-YEAR COMMERCIAL NDL
263 kb PDF
Backed By The Industry's Best Warranties
Duro-Last is so confident in the durability of our single-ply vinyl roofing systems that we protect commercial and industrial installations with the best warranties in the industry. Our standard, comprehensive 20-year full warranty is transferable, has no exclusions for ponding water, and provides coverage against consequential damages that result from defects in the Duro-Last PVC material. The best part about a new Duro-Last PVC roofing system is that the warranty is included at no additional charge.
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