Garland’s New KEE-Stone® Thermoplastic Roof Membrane Leads Industry in UV and Aging Performance

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Garland sets new industry standard in UV and aging performance with the introduction of its thermoplastic KEE-Stone membrane. It is designed for use as part of a two-ply hybrid roof system to stand up against the harshest weather.

Garland’s new KEE-Stone thermoplastic membrane leads the industry in UV and aging performance

Garland’s new KEE-Stone thermoplastic membrane leads the industry in UV and aging performance

The KEE-Stone membrane was designed to be the most durable, longest lasting thermoplastic membrane in the industry

Garland’s new KEE-Stone FB 60 fleece-backed thermoplastic membrane exceeded industry standard weathering tests tenfold, standing up against even the harshest weather and UV radiation. In accelerated weathering tests, KEE-Stone showed no signs of cracking or cratering even at 100 times magnification, which is 10 times more than the ASTM D 6754 standard requires. KEE-Stone’s unique compound, formulated using the highest grade DuPont™ Elvaloy® HP Ketone Ethylene Ester (KEE), provides superior resistance to UV degradation and heat resistance while retaining its low-temperature flexibility, which translates into a longer-lasting roof.

KEE enhances the performance of the PVC by permanently locking in its flexibility, eliminating plasticizer migration and allowing the membrane to remain tough and flexible throughout the entire lifecycle of the roof. Garland’s KEE-Stone membranes contain the KEE formulation throughout the entire sheet, further increasing its level of performance. The membrane is also reinforced with a polymer-coated, high-performance scrim unlike any other in the industry. The unique design of the scrim allows the KEE compound above and below the scrim to fuse together, imparting exceptional puncture, tear and tensile strength to the membrane.

“The KEE-Stone membrane was designed to be the most durable, longest lasting thermoplastic membrane in the industry,” explained Julie Burkett, Garland research chemist. “At Garland, we design all of our membrane roof systems with longevity in mind, using the best raw materials combined with great design.”

Garland’s two-ply, hybrid KEE-Stone system will provide the trusted protection of a traditional modified bitumen roof system with the clean, white appearance of a single-ply system.

The Garland Company, Inc. is one of the worldwide leaders of quality, high-performance roofing and building envelope solutions for the commercial, industrial and institutional markets. For over 120 years, Garland has continually developed unique product and service offerings that have raised the bar of performance while exceeding the individual needs of customers throughout the world. Today, our network of over 200 local building envelope professionals is ideally positioned throughout the United States, Canada and the United Kingdom to provide quality building envelope solutions for single and multi-property facilities. The Garland Company Inc., headquartered in Cleveland, Ohio, is an ISO 9001:2008 certified company.

For more information, visit http://www.garlandco.com or call to be connected with your local Garland representative at 1.800.321.9336.

Elvaloy® is a registered trademark of the DuPont Company.

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Michelle Sweitzer
The Garland Company, Inc.
+1 (800) 762-8225 Ext: 704
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