Ardex waterproofing membranes stop water intrusion in below-grade spaces, plaza decks, and wet-room environments. We install the full Ardex system, substrate prep, primer, membrane application, and protection layers, because waterproofing only works when every component is engineered together. Free written estimate on every project.
A membrane is only as good as the substrate it bonds to. The primer prepares that surface; the protection layer shields the cured membrane from backfill, foot traffic, or weather. Ardex systems are engineered so each product works with the others, and the warranty depends on installing all of them.
We follow the Ardex protocol because cutting corners on any step, substrate prep, primer selection, membrane thickness, joint detail, or protection, undermines the whole assembly. That is why we spec the full system and why the warranty covers it.
We evaluate the substrate, exposure conditions, and protection requirements to choose the right Ardex system (liquid-applied below-grade, sheet membrane for decks, wet-room assembly, or balcony detail).
Prepare the concrete
The slab or wall is cleaned, repaired with compatible Ardex products, and any cracks or voids are addressed before priming. Joint details and penetrations are staged for membrane application.
Prime and apply membrane
The matched Ardex primer is rolled or sprayed, then the membrane is applied to specification thickness. Liquid systems are rolled or sprayed; sheet membranes are adhered with engineered overlap and sealed at all seams.
Install protection and document
A protection layer (drainage board, screed, or traffic surface) is installed over the cured membrane. We provide warranty documentation and a handoff checklist for the next phase of work.
The detail is everything
Where Waterproofing Membranes Actually Fail
The flat field of membrane rarely leaks. The corner, the wall-to-floor transition, the pipe penetration, the expansion joint, those are where water finds a path. Ardex provides engineered detail products and specifications for every transition, and we install them because that is where the system lives or dies.
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, Boston
★★★★★
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, Cambridge
★★★★★
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, Somerville
★★★★★
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, Quincy
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Describe the waterproofing need (basement wall, plaza deck, wet room), the area size, and the project timeline. We will spec the Ardex system and send a written quote within one business day.
