HYPERDESMO-PB-1K Fast Cure Thixo Bitumen/Polyurethane Flashing Membrane 5 kg / 1.06 galHYPERDESMO PB 1K is a quick curing, one component, thixotropic, bitumen extended polyurethane fluid for flashing, waterproofing and protection. It produces a hydrophobic, elastic membrane with very strong adhesion to most types of substrates, as well as bituminous, and excellent mechanical and chemical resistance properties. It is ideal for application on vertical surfaces: no running, no bubbling. It is based on pure elastomeric hydrophobic