Basement & below-grade waterproofing

Identify the source and pressure of water before choosing a coating.

Water pressure changes the solution

Surface dampness is not the same as hydrostatic pressure. A robust solution may require an exterior membrane, drainage and mechanical protection.

Construction stage matters

Exterior access during construction allows a more complete system than trying to repair hidden waterproofing after backfilling.

Escalate structural concerns

Structural cracking, groundwater or persistent leakage should be assessed by an appropriately qualified professional.