When a floor slab needs to be dead flat or an overlay must bond seamlessly, Ardex is the system we specify. We install the full Ardex line, self-leveling underlayments, thin overlays, repair mortars and waterproofing, to the complete manufacturer sequence, so the concrete performs as tested. Every job begins with a free written estimate.
A concrete slab that's out of plane or has soft spots will show through any finish applied on top of it. That's where Ardex self-leveling underlayments (K-15, K-60) come in. They flow to a flat, stable base that accepts decorative finishes, epoxy coatings, or resilient flooring without the slab telegraphing through.
For slabs that are tired but structurally sound, Ardex thin overlays (Feather Finish, SD-M, WJ-50) bond to the existing concrete and create a seamless new surface. Spalled or damaged areas get rebuilt with Ardex repair mortars before any topcoat goes down.
We assess the slab condition, moisture profile and intended topcoat, then specify which Ardex product (underlayment, overlay, repair or waterproofing) fits the job.
Prepare the concrete base
The slab is mechanically profiled to the Ardex spec, moisture tested, and primed with the manufacturer's primer system, not a substitute.
Apply the full system
We install primer, body coat or self-leveler, and finish or waterproofing layer in sequence, following the temperature and timing requirements in the Ardex technical data.
Document and cure
Each layer cures to the Ardex schedule before the next is applied. You receive product data sheets and install records so the warranty is valid and traceable.
Installer certification
What Ardex Certified Installer Status Delivers
An Ardex Certified Installer has been trained on the product system, understands the install sequence and failure modes, and can deliver the work to full manufacturer warranty.
For your project, that means the concrete is prepped, primed and finished exactly as Ardex tested it. The same standards-first approach applies to the other brands we work with, including Mapei, Sika and our full product lineup.
Which Ardex line for which job, install spec, certification and what it means for warranty in Oshawa.
Because the slab below the finish decides how the finish ages. Ardex K-15 and K-60 pour a flat, sound surface that takes a finish without telegraphing the slab below, which is exactly what a high-end floor needs.
Yes. Ardex Feather Finish, SD-M and WJ-50 overlays are designed to bond to prepared existing concrete and lay a thin, seamless surface over it, so a tired slab gets a new finished surface without a full tear-out.
Yes. Ardex Certified Installer status means we install to the full manufacturer system, primer through topcoat, so the product warranty is intact and the install does what Ardex says it will.
Ardex waterproofing is designed for below-grade and wet-room applications. We pair it with proper drainage and substrate prep so the system actually keeps water out, not just claims to.
It depends on the slab, the product line and the area. Ardex products carry a premium over generic alternatives because of their performance and warranty; we put the full system cost in a written, itemised quote after seeing the slab.
Client reviews
What Oshawa Clients Say About Their Ardex Installs
Ardex self-leveler before our luxury vinyl plank. The floor came out perfectly flat, no lippage anywhere, and the finished install looks as good as the showroom.
O. G.
Interior designer
★★★★★
Used Ardex overlay over a beat-up basement slab. New seamless surface, bonded properly, took the topcoat with no surprises. Worth the premium.
P. R.
Renovation contractor
★★★★★
They are a certified Ardex installer so the warranty is real. Install was by the book, with the product sheets handed over at the end.
D. V.
Custom home builder
★★★★★
Ardex repair mortar saved us from a full slab replacement. They explained why it was the right call and the patched area has held up fine.
S. K.
Property manager
From the blog
Concrete Guides & Articles
Practical reading on planning, finishes and caring for concrete in Oshawa.
Tell us the slab condition and the finish you want, and we will spec the right Ardex line, install it to the full manufacturer system, and send a written, itemised quote.
