Urethane Polymers International, Inc.
PHONE: (909) 357-7200 - TOLL FREE: (800) 560-0230


UPI Primers are two-component, liquid-applied, epoxy primer/sealers that enhances the long-term adhesion of the waterproofing membrane to the substrate. They can be used over various substrates, including treated metal, wood, plywood, and concrete. Using UPI primer/sealers significantly reduces the incidence of pinholing and surface imperfections in moisture-cured polyurethane waterproofing membrane installations.