Below-Grade Waterproofing

Foundation protection you never have to think about again

Below-grade waterproofing protects foundations, retaining walls, and plaza decks from hydrostatic pressure and groundwater intrusion — failures here are expensive and disruptive to fix once the structure is backfilled or occupied.

We install sheet-applied and fluid-applied waterproofing systems below grade, detailing every wall-to-footing transition and penetration before backfill or deck installation covers the work.

Foundation Walls & Footings
Below-Grade Parking Structures
Elevator Pits & Below-Grade Vaults
Plaza & Podium Decks Over Occupied Space
Retaining Walls
New Construction & Major Renovation Projects

Strong Contractors' Approach to Below-Grade Waterproofing

One Shot to Get It Right.

Below-grade waterproofing gets one chance to be right — once it’s backfilled or covered, a failure means excavation or demolition to fix. We pressure-test and inspect every seam and transition before the work is covered.

That verification step is what protects you from a callback that costs ten times more than getting it right the first time.

Certified Applicators
Our crews are trained and certified on sheet-applied and fluid-applied below-grade systems.
Full-System Warranties
Manufacturer-backed warranties covering material and labor, with terms up to 15 years.
Quality Documentation
Every seam and transition is inspected and photographed before backfill or deck installation.
Local Expertise
We spec systems for Colorado's soil and groundwater conditions on every project.