Bituthene 4000 is a flexible, pre-formed waterproofing membrane comprised of a high performance, super tacky, cross-laminated HDPE carrier film with a unique, self-adhesive rubberized asphalt compound. Suitable for application in temperatures above 25 °F, Bituthene 4000 is intended for use with System 4000 Surface Conditioner - a unique, water-based, latex surface treatment conveniently packaged in each roll of membrane.