Waterproofing Systems That Protect From the Ground Up

Protecting Structures from the Ground Up

Liquid membranes, curtain injection, and deck waterproofing, built to defend your structure from moisture, inside and out.

The Risk Beneath the Surface

Moisture doesn’t wait for a visible leak. Over time, even small infiltration points can compromise concrete, corrode steel, and damage internal finishes, whether at the roof, façade, or below grade. Left untreated, this water damage accelerates structural deterioration, drives up maintenance costs, and shortens the life of your asset.

That’s where waterproofing comes in. Our team applies proven waterproofing systems tailored to the unique needs of each project, whether we’re restoring a garage, sealing a podium deck, or waterproofing deep foundation walls.

Our Waterproofing Methods

Deck Waterproofing Systems

Used primarily in parking garage applications, hot-applied deck waterproofing systems protect concrete slabs from water and salt infiltration.

These seamless membranes are installed under traffic toppings or directly on structural slabs, extending the lifespan of the structure.

Deck waterproofing plays a key role in managing moisture at the top level of parkades or podium garages, where exposure to the elements is constant.

Curtain Injection Waterproofing

When water is entering a structure from the outside, but access to the exterior wall is not possible, curtain injection is often the best solution. This technique involves injecting a waterproof resin or gel from the inside, which travels through cracks or joints and forms a watertight curtain on the exterior face.

It’s especially useful in below-grade applications such as:

Retaining walls
Deep basements
Elevator pits
Tunnels or blind-side walls

Curtain injection is a non-invasive solution that stops active leaks and prevents future water ingress without excavation.

Liquid Waterproofing Membranes

Liquid-applied membranes cure into a seamless, flexible barrier that adapts to surface movement. These systems are ideal for:

Podium and rooftop slabs
Balcony surfaces
Foundation walls

They’re especially effective in irregular or detailed areas where sheet systems are difficult to install. Applied correctly, liquid membranes provide durable protection against water ingress, freeze-thaw damage, and chloride intrusion.

Why Waterproofing Matters

Whether in a below-grade garage, on an exposed rooftop, or behind cladding, waterproofing is the barrier between moisture and long-term durability. A properly applied system helps:

Prevent structural degradation
Improve indoor air quality
Control mold and mildew risk
Lower long-term repair costs
Extend the service life of critical systems

At Canmar, we treat waterproofing not as a last step, but as a foundational part of structural resilience.