Foundation Waterproofing Mastic

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Foundation Waterproofing Mastic

Membrane mastic is a water-based modified asphalt mastic. It used to fill voids, tie holes, seam edges, overlaps and penetration details prior to waterproofing or dampproofing.

It is a component of foundation waterproofing membranes, systems and dampproofing.

Heavy bodied trowel grade material is waterproof. Use it on the exterior face of foundations to seal water out of the basement.

  • Tie holes
  • Small voids
  • Cold joints