Foster® 60-91™ (gray) Monolar® Mastic is a tough, flexible, and fire resistive elastomeric finish for protection of outdoor thermal insulation. It contains DuPont Hypalon* rubber. It is an excellent vapor barrier for low temperature insulation on tanks, pipework, ductwork, vessels, and fittings.
MONOLAR Mastic trowels easily and smoothly without drag or excessive stringing. It features higher than average volume solids, reducing the number of gallons that need to be applied.
MONOLAR Mastic is produced under the classification and follow-up service of Underwriter’s Laboratories, Inc. MONOLAR Coating meets NFPA 90A and 90B 25/50 requirements.