Duro Last ™

A Duro-Last™ roof is VERY well suited for many situations, from flat decks to domes; it is most often used where more standard materials would be impractical, flat surfaces in particular. For some examples of our completed Duro-Last™ roofs, click here.The Duro-Last™ Roofing System is a high tech, polymer thermoplastic membrane consisting of resins and plasticizers, stabilizers, biocides, flame retardants and UV absorbents. This membrane is then laminated to a non-woven web material. Visually it is similar to an extremely thick and pliable sheet of reinforced plastic/rubber, usually white in color but also available in gray and tan.

The roofing arrives in large rolls of pre-measured material. All vents, pipe collars and other detail items are pre-made and welded on site. These larger pieces are heat welded together for a seamless final product.A Duro-Last™ representative inspects every job personally to ensure quality. Their reputation is riding on our workmanship. Duro-Last™ calls itself "The World's Best Roof." Here's why:FIRE RETARDANT

The Duro-Last™ Roofing System's polymer thermoplastic will not burn. In Underwriters Laboratories (UL) tests, the Duro-Last™ Roofing System is regularly rated effective against light to severe fire exposure. This gives you peace of mind knowing your Duro-Last Roof will stay strong even under harsh and unexpected conditions.ENERGY EFFICIENT
Due to its reflective qualities, you can save money on energy costs by installing a Duro-Last™ Roofing System. Duro-Last's white membrane reflects approximately 83% of the sun's energy.15-YR LIMITED/20-YR PRORATED WARRANTIES

On top of its commitment to quality, Duro-Last™ provides protection with an outstanding 15-year limited (material and labor) warranty or a 20-year prorated warranty that protects non-residential buildings and their contents if damaged because of a failure of the Duro-Last™ Roofing System. This is only possible because of the intensive quality-control measures, which are exercised during the manufacture and installation of the Duro-Last™ Roofing System. With these warranties, you can be assured that Duro-Last™ will stand behind its products.MAINTENANCE-FREE
Once installed, the Duro-Last™ Roofing System is continually watertight and virtually maintenance-free.INSTALLED BY PROFESSIONALS
The Duro-Last™ Roofing System is installed only by authorized Duro-Last™ dealer/contractors who have received extensive training in this system. River Roofing is proud to be one of these contractors. A list of our satisfied customers and buildings you will recognize.