GREAT STUFF™ Pond & Stone is a polyurethane-based foam sealant designed for use in water features. By expanding to fill gaps and cracks, it works as a water-resistant sealant to help direct the flow of water in waterfall, pond and streambed construction to go where you want it to go, not under or behind rocks. The foam is black to blend in among the stones and shadows. It cures in 8 hours to create a water-shedding bond for stone, rock, masonry, concrete and most other building materials. It's perfect for water features from fountains to koi ponds because it's safe for fish.

  • Landscape/hardscape foam filler, sealer and adhesive
  • Damp and dry application
  • Adheres to stone and rock
  • Fish safe
  • Expands to fill gaps to direct water flow over rocks
  • Secures stones without mortar
  • Repairs cracks and holes in trees
  • Cures in 8 hours
  • Black colored foam
  • All-direction dispensing
  • UL Classified
  • One 12 oz. can = up to 19 tubes of caulk
GREAT STUFF™ Pond & Stone  
Why Use Pond & Stone?
  • To fill outdoor gaps and cracks
  • To seal water features
  • To bond landscape bricks
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Product Specs:
  • GREAT STUFF™ Pond & Stone 12oz
  • GREAT STUFF™ Pond & Stone 16oz
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Safety & Handling
  • Remember to read these carefully before getting started.
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GREAT STUFF™ Pond & Stone Sales Sheet (English) (1.2 MB)

GREAT STUFF™ Pond & Stone Sales Sheet (French) (1.02 MB)