KEE stands for Keytone Etylene Ester, a compound for making a roofing membrane. KEE Single Ply Roofing looks a lot like PVC and TPO but is very different in chemistry. The KEE materials are usually supplied in 36-90 mils thick. Seams are hot-air welded together for a strong bond at the seams and end laps.
There are many types of plasticizers added for various physical properties from flexibility to chemical and UV resistance. KEE is said to be more resistant to jet fuels. KEE single ply roofs can be ballasted, adhered or mechanically fastened at the seams of each sheet or to plates, leaving a smooth, reflective surface.
Usually the KEE Single Ply Roof is white. Surfacing is either smooth (adhered or mechanically fastened, ballasted with large, round 3/4" river rock, or a vegetative garden topping, pavers or photovoltaic panels.
The system has to be installed to the manufacturers installation instructions, the listing, where applicable, and the building code.
Visit the specific single ply membrane pages for more information.
Professional Chicagoland Roofing Council contractor roofing technicians understand the complexity of all types of roofing and get the installation done right the first time. Contact a CRC Contractor that has the equipment, workforce and technology to get your roof done right.