Roofing System:
The Duro-Last membrane is classified as a PVC blend (co-polymer alloy) and is a proprietary thermoplastic formulation consisting of resins and plasticizers, stabilizers, biocides, flame retardants and U.V. absorbents. This membrane is then laminated to a weft insertion knitted scrim. The Duro-Last membrane is available in white, tan or gray.

For ease of handling as well as reduced field seams and installation time, Duro-Last dialectically welds material in large sheets up to 2,500 square feet (230 square meters) as specified by architects, contractors, or installers. The system weighs .25 lbs. per square foot.

Hot air welding is used to bond all of Duro-Last's field seams. The welds can be made with either a hand-held unit or a walker welder. Heat welding eliminates the need for chemicals, torches and other unsafe non-manageable seaming systems. Duro-Last's product properties combined with heat seaming create a bond that is stronger than the individual products alone.

The Duro-Last Roofing System is non-curing to provide excellent welding ability for the entire life of the system. A patch, curb, stack or any other necessary alterations can easily be accomplished by heat welding the new Duro-Last membrane or accessory to the existing membrane. Once installed, the Duro-Last Roofing System is continually watertight and virtually maintenance-free.

Here is why a Duro-Last® roof is perfect for Metal Buildings:

The flute voids are filled to create a level surface, and an extra layer of insulation is added to increase the R-value. The entire roof assembly is then made watertight by installing the Duro-Last membrane. Penetrations are watertight, thanks to the Duro-Last custom fabricated stacks and curb flashings. Installation is prompt, safe and performed only by authorized dealer/contractors. Plus, your business can remain open at all times during installation.

Duro-Last provides you with a published 15 or 20-year warranty that protects commercial building owners. This is further evidence of the outstanding quality and performance of the Duro-Last Roofing System. Make your building more energy efficient and enjoy years of leak-free performance with the Duro-Last Roofing System (a real roof - not a coating).

Contact Us today to find out more
information on the Duro-Last Roofing System!

Click on the Membrane or Accessories picture for a larger view. For more photos click here to visit our Installation Photo Album. Below are Duro-Last Specs in .pdf format for download. To view files Acrobat Reader is needed; to install click here. Prefabricated Parapet & Deck Sheets Duro-Last Physical Specifications