Cut labor. Cut scrap. Cut costs.

Produced in standard and custom lengths up to 200 feet, the Duro‑Last X (DLX™) PVC membrane is a proprietary thermoplastic formulation that provides flexibility, reflectivity and resistance to UV radiation, fire and a broad range of chemicals. Designed to reduce scrap and improve installation efficiencies, DLX offers a smooth matte finish with exceptional weldability.

A complete line of custom-fabricated accessories is available to address the critical transition areas of a roof, providing superior waterproofing, long-term leak protection and flawless aesthetics.

Enjoy the labor- and material-saving benefits of custom-fabrication in a familiar roll good product — backed by the quality and performance you expect from the manufacturer of the “World’s Best Roof®”.

Industry leading performance —
Edge‑to‑Edge and Deck‑to‑Sky™

Duro-Last is a full system roofing provider — from the roof deck to insulation and membrane to custom-fabricated accessories, edge metal, drains, flashings, fasteners and adhesives — we have your roofing needs covered.

Membrane Features

  • Custom-cut membrane, in lengths up to 200 feet, offers enhanced efficiency for roll good installation, resulting in fewer T-patches, fewer end rolls and reduced scrap.
  • Proprietary Duro-Last PVC formulation provides energy savings and fire resistance and is recyclable.
  • Custom-cut membrane can be mechanically attached, adhered or induction-welded over a wide variety of roof substrates.
  • 50-mil membrane is manufactured with 28 mil of thickness on the top performance layer — the layer of the membrane exposed to the elements on the rooftop — exceeding industry standards and many competitor systems with equal or greater mil values.
  • Weft-inserted (or “woven”) anti-wicking scrim with a density of 18 by 14 threads per inch provides superior strength and puncture resistance.
  • A complete line of DLX custom-fabricated accessories is available, reducing labor and the potential for leaks at critical transition areas of the roof.
  • NSF/ANSI 347 Platinum certified; UL and FM approved.
  • Best-in-class warranties: 15-year with consequential damage coverage available for commercial buildings at no additional cost.
Roll Good Sizes
50 mil*10 in. x 100 ft.30 in. x 100 ft.5 ft. x 100 ft.10 ft. x 100 ft.
60 mil*10 in. x 100 ft.30 in. x 100 ft.5 ft. x 100 ft.10 ft. x 100 ft.
80 mil**10 in. x 65 ft.30 in. x 65 ft.5 ft. x 65 ft.10 ft. x 65 ft.

*50 and 60 mil can be custom-cut up to 200 feet.
**80 mil can be custom-cut up to 130 feet.

MilPVC Film Above ScrimWeightScrimBottom Color/ Surface Finish
5028 mil0.31 lbs per sq. ft.18 x 14White/Matte
6028 mil0.36 lbs per sq. ft.18 x 14White/Matte
8038 mil0.46 lbs per sq. ft.18 x 14White/Matte
DLX by Duro-Last

Benefits of PVC

  • Chemical Resistance
  • Longevity & Durability
  • Seam Strength & Weldability
  • Flexibility in Harsh Weather
  • Energy-Efficiency
  • Sustainability
  • Fire Resistance