HIGHLY REFLECTIVE AND EMISSIVE ASPHALT-BASED ROOFING MEMBRANE.

摘要

A prefabricated asphalt-based waterproof roofing membrane for use in a multi-ply asphalt-based commercial roofing system, e.g. a cap sheet that forms the exposed layer of a multi-ply built-up roofing system, is manufactured at a factory to have a highly reflective and emissive non-asphalt based elastomeric top coating layer. Preferably, a polymer primer layer is interposed between the highly reflective and emissive coating layer and an asphalt saturated and coated reinforcing substrate to keep oils and other colored components in the asphalt from exuding into the highly reflective and emissive coating layer.