Membrane Water Proofing System

A way to strengthen the structure: Waterproofing membranes prolong the lifespan of a building by limiting any moisture that may intrude and cause rust, rotting, corrosion, structural defects, or other damage to property and contents.

Concrete and shotcrete are porous materials, so once the building has settled, it can crack over time or leak from water-exerting pressure on the below-grade foundation. If the building is on a site with underlying contamination, hazardous conditions can also be created when methane gas or vapor from contaminated soil and/or groundwater migrate through imperfections in concrete.

There are above-grade and below-grade materials for waterproofing: Above-grade: Balconies, parking decks, rooftop terraces and plazas need waterproofing to protect the building envelope from moisture ingress. These products must be watertight, adaptable to a range of temperatures and, in some cases, resistant to UV light and aesthetically pleasing.

Below-grade: Below-grade materials are designed to withstand a unique set of challenges. Concrete foundations may be exposed to perched water or nuisance water pressure even when a groundwater table isn’t present. This causes water to collect in the looser soil, keeping it close to the foundation where it can potentially cause damage. If the building foundation is being constructed into the groundwater table, waterproofing obviously becomes more critical. COM