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Product Resources

Underseal® PRM™

Underseal® PRM™ is a strong, self-adhering, 65 mil, post-concrete pour sheet waterproofing membrane/vapor retarder with a double thick, high-strength, cross-laminated polyethylene backing laminated to a thick layer of rubberized asphalt compound.  Underseal® PRM™ adheres tightly and permanently to concrete and 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 protected wall applications when applied to the exterior sides 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 operations.

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.



650 LT Liquid AdhesiveUsed to prime all structural concrete, masonry, insulation or wood surfaces prior to membrane installation. more detail
California SealantUsed to prime structural surfaces on which waterproofing membranes will be applied more detail
Detail Sealant PW™VOC./HAPS free high performance solvent-free sealant more detail
Detail TapeUse as detail strips on corners, penetrations, joints, and for patching damaged areas of the membrane. more detail
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