Foundation Waterproofing Systems

Below-grade waterproofing assemblies designed to prevent water intrusion and protect building foundations long-term.

Water Always Finds a Path Into Foundations

Foundation leaks typically occur due to:

  • Hydrostatic pressure from surrounding soil
  • Cracks in concrete walls
  • Failed or missing exterior membranes
  • Improper drainage around the foundation
  • Deterioration of old dampproofing materials

    Once water reaches the concrete, it eventually finds its way into the building.

Dampproofing Is Not Waterproofing

Many older buildings were constructed with dampproofing, which is only designed to resist soil moisture — not standing water or hydrostatic pressure.

True waterproofing systems are designed to:

  • Resist constant water pressure
  • Bridge cracks and movement
  • Protect the foundation for decades

The Layers That Protect a Foundation Wall

  • Excavation to expose foundation wall
  • Surface cleaning and crack repair
  • Primer for adhesion
  • Liquid-applied or sheet waterproofing membrane
  • Reinforcement at cracks and joints
  • Protection board or drainage board
  • Perimeter drainage and proper backfill

Signs That Exterior Waterproofing Is Required

  • Water entering basement walls
  • Efflorescence or damp spots
  • Mold or musty odors
  • Cracks in foundation walls
  • Repeated sump pump activity

Interior sealants do not solve these problems long-term.

Moisture marks from rainwater are visible on the floor of the building at the wall junction, indicating construction issues.

Designed for Below-Grade Conditions in Nova Scotia

Foundation systems must withstand:

Saturated Soil Conditions

Freeze-Thaw Movement

Long-Term Exposure to Moisture

Soil Settlement and Pressure

Experiencing Foundation or Basement Leaks?

Enhance the longevity of your property with Forte's expert waterproofing solutions.