Tapecoat® HT/MB is a 40 mil coating, applied with a 50% overlap, for below grade application. Tapecoat® HT/MB is a cold applied, self-adhering coating that is impermeable to water and salt. An aggressive high temperature adhesive is laminated to the HT/MB polypropylene mesh backing. The woven mesh backing gives the coating added strength against soil stress. Appropriate for coating below grade pipe with operation temperatures up to 300°F. Use TC® OMNIPRIME primer when operation temperatures will not exceed 180°F; use TC® 7000 EPOXY as a primer for operation temperatures to 300°F.