Water finds every weakness in your building envelope
Waterproofing failures in NYC commercial buildings cause more cumulative damage than almost any other building system failure. Water infiltrates through roof decks, terraces, balconies, plaza areas, and below-grade walls — often silently, for years, before the damage becomes visible.
By the time you see staining, mold, or structural deterioration, the waterproofing membrane has been compromised for months or years. The repair cost escalates with every season of delayed action — from membrane replacement to structural remediation to interior restoration.
Where waterproofing fails
Roof Decks & Terraces
Occupied roof spaces with pavers, planters, or finishes over membrane. Failures are hidden under the surface and require removal of finishes for access.
Balconies & Landings
Cantilevered and supported balconies endure direct weather exposure. Failed waterproofing deteriorates the structural concrete beneath.
Plaza & Podium Decks
Large horizontal surfaces over occupied space. Complex drainage, multiple penetrations, and heavy traffic make these among the most challenging waterproofing applications.
Below-Grade Walls
Foundation walls and below-grade structures face hydrostatic pressure. Failed waterproofing leads to water infiltration, mold, and structural corrosion.
Systematic waterproofing restoration
Waterproofing repair starts with identifying the failure location and mechanism — not just where water appears, but where it enters. We remove finishes as needed to access and assess the membrane condition, drainage system, and structural substrate.
Repair scope depends on findings. Localized membrane repairs may suffice for isolated failures. Widespread deterioration requires full membrane replacement with proper drainage, protection board, and finish restoration. We specify systems based on the specific application — traffic deck, protected membrane, or fluid-applied.
Suspect a waterproofing failure?
Free assessment. We trace the infiltration to its source and develop a targeted repair plan.
Protecting waterproofing investments
Waterproofing membranes are buried under finishes and traffic. Proactive maintenance catches failures before damage spreads.
Frequently Asked Questions
Stop the water. Protect the structure.
Waterproofing failures compound over time. Proper diagnosis and repair prevent cascading damage.