
Installed over the foam insulation and mechanically fastened to the structure of the home, the Cooley C3 membrane provides a weatherproof barrier. The membrane is made with DuPont “Elvaloy” KEE to help resist harsh weather and damaging UV rays. Its white finish reflects the sun’s rays, and the membrane is qualified by the EPA as an “ENERGY STAR” roofing product.
DuPont™ Elvaloy® KEE is a solid, yet flexible terpolymer, and the basis of the world’s best thermoplastic roofing membranes. It helps keep them pliable and highly maintainable years after installation. All thermoplastic roofing membranes start out flexible and can be heat-welded. Some thermoplastics are made flexible with volatile liquid plasticizers. Over time, these plasticizers can migrate out, causing the membrane to shrink and become brittle. This can cause tearing of the membrane and leave it much more difficult to heat weld for repairs or for new cut-ins for vents or equipment.
DuPont™ Elvaloy® KEE, however, won’t migrate out-being a flexible solid, it remains in your roofing membrane, helping keep it pliable and weldable for life. Properly formulated roofing membranes with Elvaloy® KEE, have been resisting the elements and performing for decades. So effective is Elvaloy® KEE, a new ASTM standard (D6754-02) has been issued for membranes containing it…a standard redefining the industry’s expectations for superior roofing performance.
DuPont™ Elvaloy® KEE, however, won’t migrate out-being a flexible solid, it remains in your roofing membrane, helping keep it pliable and weldable for life. Properly formulated roofing membranes with Elvaloy® KEE, have been resisting the elements and performing for decades. So effective is Elvaloy® KEE, a new ASTM standard (D6754-02) has been issued for membranes containing it…a standard redefining the industry’s expectations for superior roofing performance.