Underseal® PRM™

Underseal® PRM™ - Puncture Resistant Membrane - is a strong, self-adhering, 65-mil, post-concrete pour sheet waterproofing membrane/vapor retarder with a double thick, high-strength, co-extruded backing laminated to a thick layer of rubberized asphalt compound. Underseal® PRM™ adheres tightly and permanently to concrete. The backing forms a continuous barrier to water and moisture vapor entry. Underseal® PRM™ can be used in both horizontal and vertical applications.

VERTICAL APPLICATION: Underseal® PRM™ can be used in wall applications when applied to the exterior side of vertical concrete foundation walls, tunnels, and related applications where waterproofing is critical. It allows for faster waterproofing applications by eliminating the step to install an additional protection course prior to backfilling with clean fill.

HORIZONTAL APPLICATION: Underseal® PRM™ can be applied to horizontal slab applications such as parking garages, plaza decks, plywood decks and related applications and allows for concrete topping slab installation without the need for a separate protection course in most situations

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