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Henry Stop Leak

Quick leak protection for a variety of surfaces.

Henry® 480 Stop Leak® 100% Silicone Spray Sealer is a premium, easy-to-use, 100% silicone aerosol leak sealer, formulated to provide a permanent leak-proof seal on a variety of surfaces. This multi-purpose leak sealer waterproofs and protects gutters, skylights, flashing, roofs, RVs, campers, windowsills, foundations, boats, cars, concrete, glass, metal and more.


  • 100% silicone technology creates a waterproof seal
  • Stops leaks fast and permanently on a variety of surfaces
  • Lifetime limited warranty
  • Rain-safe in 15-minutes
  • 1-coat application
  • Wide application temperature range from 2 °C to 38 °C (35 °F to 100 °F)


  • Up to 0.93 m2 (10 square feet) per canister per coat

Sizes available

  • 400 gram (14.1 oz) canister


  • Black
  • White