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Mountain Grout Strong

Swimming pools offer a different challenge than most Mountain Grout projects installers are trying to keep the water in rather than keeping it out!

Leaks not only necessitate constant refilling of water, they can cause large voids under and around pools that turn into much more serious problems for pool owners. Nonetheless, the methods and best practices for installation mirror those on other basic crack injection jobs. Installers drill bore holes in a stitching pattern along the cracks, insert injection packers into the bore holes, and pump Mountain Grout Polyurethane Resin through the packers. The polyurethane resin reacts with the moisture already present in the crack and forms a foam that cures and fills the void from which the water was escaping.

If the pool is new and has never had water in it, simply wet the crack to provide the water for the reaction. After injection, the packers can be removed and bore holes covered with a patch to give the pool a finished appearance. Mountain Grout is the preferred supplier of the Master Pools Guild and its resins are in pools across the US and many foreign countries.

Resin choice depends on specific site conditions call us now for advice on your best choice!


  • Mountain Grout HL100 TDS
  • Mountain Grout SLV TDS
  • Mountain Grout Flexible TDS

Essential Equipment:

  • Mountain Grout Resin of Choice
  • Mountain Grout Pump Flush
  • Injection Pump
  • High Pressure Injection Gun with extra couplers
  • Hammer Drill
  • Drill Bit to match diameter of Packers (3/8”, 1/2”, 5/8”)
  • Socket Set (Deep well, thin wall sockets)
  • Packers
  • Clean 5gallon buckets
  • Paddle Mixer
  • Personal Protective Equipment (PPE)
  • Plastic Sheeting
  • Tape
  • Assorted Hand Tools
  • Mountain Grout Ureclean Wipes or Rags

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GMI offers the best dealer pricing to qualified customers. Apply here.

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Green Mountain Grout International LLC, Member of the ICRI & Member of the ASDSO.