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Tremco Watchdog H3 Foundation Waterproofing Membrane

Keep Foundations Dry and Protected—Even in Wet BC Conditions

Tremco Watchdog H3 is a reliable, spray-applied foundation waterproofing membrane that helps keep water out of your build from day one. Available through BCBP, it’s a top choice for contractors across British Columbia working on residential and mid rise foundations.

This high-performance membrane creates a tough, reliable barrier that keeps water out—even under three feet of hydrostatic pressure. It bonds tightly to concrete and cures evenly to a 40-mil thickness. Thanks to its flexibility, it can stretch over small cracks that appear as concrete settles, helping to prevent leaks down the line.

Watchdog H3 is engineered to remain in place and perform, regardless of whether you’re building in coastal areas, rainy climates, or unstable soils.

Why Contractors Choose Watchdog H3:

  • Proven to hold back up to 3 ft of Hydrostatic water pressure 
  • Flexible enough to span foundation cracks caused by settling 
  • Quick and easy to apply with airless spray 
  • Stays in place without slumping or running 
  • Can be applied even in colder temperatures (as low as 20°F)

If you’re looking for a dependable foundation waterproofing solution that stands up to BC’s wet weather and challenging soil conditions, Watchdog H3 is a product you can trust.

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