Building

SwellSeal® MS/HP is designed for below-ground vertical and horizontal structural foundation surfaces. Typical applications include backfilled concrete walls, below-grade masonry block walls, structural slabs, tunnels, and property line construction. Property line construction applications include piling, skin wall, shotcrete and stabilised earth retention walls. Applications may include structures under continuous or intermittent hydrostatic pressure (tested to 70m ASTM 5385). SwellSeal® MS/HP is particularly useful where the ground water is slightly saline or contaminated.  SwellSeal is also suitable for use on Greenroof applications.


SwellSeal® MS/HP can be installed directly over a properly prepared soil substrate without a working mud slab. Additionally, SwellSeal® MS/HP can be installed onto freshly poured concrete as soon as the forms are removed.

Features and Benefits

  • Durability: withstands inclement weather and resists construction-related damage
  • Superior Adhesion: mechanical bond secures product and prevents water migration
  • Long Service Life: provides waterproofing protection for the life of the structure
  • Easy to Install: quick and easy installation without adhesives or special equipment
  • Self-Sealing: active, swelling properties of sodium bentonite seal small cracks, including in saline environments.
  • Uniformity: minimum 5500 grams of sodium bentonite granules per square metre
  • Insured Warranty: Manufacturers warranty