Ardex offers full waterproofing system chemistry for below-grade walls, plaza decks, wet rooms, and any concrete environment where water control is a long-term challenge. Oshawa Concrete installs Ardex waterproofing as the Ardex-system specialist, with the prep, primer, membrane application and protection layers that the system specifies. Every project starts with a free written estimate.
Waterproofing fails when the system is not installed as a system. The membrane bonds to the substrate the primer prepared; the protection layer protects the membrane from backfill or traffic; the joint detail handles movement at transitions. Skip any component or substitute any product and the whole assembly underperforms.
Ardex offers complete waterproofing systems where each component is engineered to work with the others, and the warranty depends on full-system installation. We install to that protocol because that is what makes the waterproofing work for decades.
We confirm which Ardex waterproofing system fits the project (below-grade liquid-applied, deck membrane, wet-room system) based on substrate, exposure and protection requirements.
Prep substrate
The substrate is prepped to the Ardex spec for that system, cleaned, repaired with compatible materials, and any joint detail is staged for the membrane install.
Prime and apply membrane
The matched Ardex primer is applied, the membrane is installed (liquid-applied or sheet depending on system) to the engineered thickness with all joint, corner and penetration details per spec.
Protect and document
The protection layer is installed where required (drainage board, screed, traffic surface), the system is documented for warranty support, and the waterproofing is handed off ready for backfill or service.
Why systems fail
Joint Detail Is Where Waterproofing Lives or Dies
Most waterproofing failures we are called to assess trace back to joint detail. The membrane across the field is fine; the corner, the wall-floor transition, the pipe penetration is where water finds the gap. Ardex systems have engineered detail products for those transitions, and we install them per spec because that is where the system has to hold.
Coordinate with adjacent Ardex repair if the substrate needs work before membrane install, and with our broader foundation or basement services where the waterproofing fits into the larger project.
System types, joint details, protection layers and warranty.
Multiple systems for different applications: below-grade liquid-applied, plaza-deck membrane, wet-room system, balcony waterproofing. We spec from the Ardex range based on the project's actual exposure and substrate.
Because that is where most waterproofing fails. The membrane field is rarely the problem; the corner or penetration is. Ardex provides engineered detail products for those transitions; using them per spec is what makes the system hold.
A physical layer (drainage board, screed, traffic surface) installed over the cured membrane to protect it from backfill, traffic, or service exposure. Without protection, even a perfectly installed membrane can be damaged in subsequent construction phases.
Yes, system warranty applies when installed to Ardex spec by an Ardex-system installer. We deliver the warranty documentation at handoff.
Depends on area and system. Below-grade wall waterproofing on a foundation might be a few days; a full plaza-deck system stretches longer. The full schedule is in the quote.
Below-grade waterproofing on a foundation upgrade. Full Ardex system, every detail to spec, two springs of melt with the basement bone dry. Warranty documentation in our file. Real install.
Z. V5
Property Owner, Oshawa
★★★★★
Plaza deck waterproofing system on a commercial roof terrace. Membrane, drainage board, traffic surface, every layer per Ardex spec. Inspector signed off cleanly, no leak issues since.
Y. V5
GC, Toronto
★★★★★
Wet-room waterproofing for our locker rooms. Every joint, every penetration detailed per spec. Three years of daily wet operation, zero failures. The detail work is what matters.
Q. V5
Facility Manager, Brampton
★★★★★
They walked through the joint detail before install so we understood why it cost what it cost. The system has held; the up-front spec discussion was worth it.
X. V5
Custom Home Builder, Mississauga
From the blog
Concrete Guides & Articles
Practical reading on planning, finishes and caring for concrete in Oshawa.
Tell us the waterproofing application (below-grade, deck, wet room), the area, and the project context, and we will spec the Ardex system and quote in writing.
