Duro-Last | The World's Best Roof
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Duro-Last | The World's Best Roof
Duro-Last EV PVC Roofing Membrane cross section over metal roof

Duro-Last® EV PVC Roofing Membrane

A flexible and energy-efficient KEE roofing membrane for colder weather and harsh chemicals

The proven performance of Duro-Last with ELVALOY ™ KEE

The Duro-Last EV roofing membrane incorporates ketone ethylene ester (KEE) into our proprietary Duro-Last PVC thermoplastic membrane formulation, offering the same UV resistance, reflectivity and enhanced chemical resistance. Utilizing ELVALOY ™ KEE from Dow, the membrane is flexible and weldable in low temperatures and performs well in cold, harsh environments. Duro-Last EV uses the optimal amount of KEE, yielding the performance benefits of KEE while also being cost-effective. It’s an excellent choice for low-sloped projects requiring a long-lasting, energy-efficient roofing system that offers resistance to both weather and chemical attack.

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

  • KEE-containing roll good for applications requiring enhanced chemical resistance.
  • Proprietary Duro‑Last PVC formulation provides energy savings and fire resistance and is recyclable.
  • 10-foot rolls reduce on-site labor and enable a quick, quiet and easy installation.
  • KEE-containing membrane can be mechanically attached, adhered or induction-welded over a wide variety of roof substrates.
  • EV membranes are not compatible with Duro‑Last, Duro‑Tuff®, Duro‑Fleece® or Duro‑Fleece Plus® membranes or accessories.
  • A robust top performance layer (or “thickness over scrim”) of the PVC membrane exposed to weather, the environment, chemicals and human activity provides exceptional reflectivity, flame retardance, and UV and chemical resistance.
  • Weft-inserted (or “woven”) anti-wicking scrim roofing material with a density of 18 by 9 threads per inch provides superior strength and puncture resistance.
  • A complete line of Duro-Last EV custom-fabricated accessories specifically designed for KEE-containing membranes is available, reducing labor and the potential for leaks at critical transition areas of the roof.
  • NSF/ANSI 347 Gold certified; UL and FM approved as well as ASTM D 4434-12 and ASTM D 6754-10 compliant.
  • Backed by Duro-Last’s extensive range of best-in-class warranty options.
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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 100 ft. 30 in. x 100 ft. 5 ft. x 100 ft. 10 ft. x 100 ft.
Mil PVC Film Above Scrim Weight Scrim Bottom Color
50 25 mil 0.28 lbs. per sq. ft. 18 x 9 White
60 28 mil 0.30 lbs. per sq. ft. 18 x 9 White
80 38 mil 0.51 lbs. per sq. ft. 18 x 9 White
ELVALOY™ KEE is a trademark of Dow.
Duro-Last EV

Features

  • PVC KEE Membrane
  • Roll Good
  • 50, 60 or 80 mil
  • Roll Widths: 10″, 30″, 5′, 10′
  • Available in White

Warranty

  • 15-Year NDL to 30-Year NDL
  • 15- and 20-Year NDL High Wind

Colors

Benefits of PVC

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

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Questions?
Request Samples
Duro-Last | The World's Best Roof

Headquarters | 525 Morley Drive, Saginaw, MI 48601 | 888.301.7712

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