KEE Roofing

Flat roof on building. J.R. Swigart serving Pasco WA provides KEE roofing for commercial applications.Elvaloy® is a Ketone Ethylene Ester-containing membrane. This molecule offers the same reflectivity, UV-resistance, and durability FiberTite is known for. KEE roofing remains flexible and is able to be welded in low temperatures.

One big benefit of KEE is its flexibility. Traditional plasticizers will migrate out of the roofing membrane causing it to lose its flexibility and become brittle. KEE will not migrate out of the membrane, so your roofing will remain flexible for decades. It’s high molecular weight also makes it very stable in even the harshest conditions.

What is KEE Roofing?

Ketone Ethylene Ester, abbreviated as KEE is a PVC polymer. This high-molecular-weight polymer is widely used in roofing because of its favorable melting properties and elastomeric properties. It’s manufactured by DuPont™ under the name Elvaloy® Ketone Ethylene Ester.

The difference between KEE and PVC is that KEE membranes are over 50% KEE while PVC membranes are over 50% PVC. With the optimal amount of DuPont™ KEE polymer, your roofing life will be extended and maintenance costs reduced.

Benefits of KEE Roofing

PVC membranes enhanced with Elvaloy® Ketone Ethylene Ester will offer property owners several advantages over other PVC membranes with traditional plasticizers.

  • Repels harsh chemicals
  • Remains flexible for decades
  • Prevents delamination over time
  • Withstands severe weather
  • Accommodates efficient installation techniques
  • Resistant to punctures and tears

Elvaloy® KEE Roofing is great for irregular rooflines and uneven surfaces and although it’s fairly new, it’s gaining popularity.

The Elvaloy® Ketone Ethylene Ester Difference

At J.R. Swigart, we exclusively use FiberTite roofing materials for all of our projects. FiberTite sets the performance standard in roofing through the proven use of DuPont™ Elvaloy® KEE which is why we’re proud to implement their products anywhere we can.

If you’re searching for a quality roof for your building, we highly recommend incorporating KEE into your PVC roofing. To learn more about how KEE roofing or to receive an estimate, contact us today!