Henry offers an environmentally friendly 790-11 hot rubberized asphalt. Henry's time-tested 790-11 hot rubberized, fluid asphalt is formulated to provide a monolithic, fully bonded roofing and waterproofing membrane. 790-11 is the ideal choice when waterproofing both intensive and extensive vegetative roofing assemblies. It is modified with additives to promote adhesion and improve low temperature flexibility. Henry's 790-11 is composed of a specially selected blend of refined asphalts, synthetic rubber and mineral stabilizers.