When concrete cracks, spalls, or settles, the repair needs to match the damage type. Ardex makes a full range of repair mortars, each engineered for a specific situation. We diagnose the repair, select the right Ardex product, apply the bonded-primer protocol, and hand off a repair that holds. Free assessment and written quote.
Concrete fails in different ways. A hairline crack in a slab needs a flexible, flowable repair material that can penetrate and bond. A spalled edge on a wall needs a high-strength patch that won't sag under its own weight. A deep structural repair needs a mortar that cures without internal cracking. One generic product cannot solve all three.
Ardex builds a system where each repair mortar is formulated for its specific job. The wide-line crack filler flows into tight cracks. The vertical-repair product has non-sag rheology for walls and edges. The deep-section mortar cures slowly to avoid shrinkage cracking. The structural repair product bonds at engineered strength. We assess the repair type, select the matched Ardex product, and apply the bonded-primer protocol that makes the repair permanent.
We examine the repair area, determine whether it is a crack, spall, vertical surface, or deep structural section, and identify the Ardex product engineered for that specific situation.
Prepare the surface
The repair zone is cleaned to Ardex specification, saw-cut to a clean edge where needed, and all contaminants removed so the substrate is bare concrete or aggregate ready for bonding.
Apply primer and mortar
The Ardex bonded primer is applied to the prepped surface, the repair mortar is mixed to manufacturer ratios, and placed at the thickness specified for the matched product.
Finish and cure
The repair cures on the Ardex schedule, is finished to match the surrounding concrete texture and gloss, and handed off with full system documentation and warranty.
Why repairs fail
Concrete Repair Fails When Product Doesn't Match
We regularly repair failed repairs where a contractor used a single general-purpose mortar for every situation. The horizontal patch product was placed on a vertical wall and sagged. The fast-set product was used in a deep section and cracked from shrinkage. The standard mortar was applied without the bonded primer and delaminated. Each failure traces back to product mismatch.
The Ardex system exists because repair situations are not interchangeable. Matching the product to the damage type, applying the bonded primer, and following the cure schedule is the discipline that makes repairs hold. We bring that discipline to every job. Coordinate with Ardex waterproofing systems if the repair is in a wet environment, and reference our full brand specialty for integrated concrete solutions.
Product matching, bonded primer, vertical repair and warranty.
Different repair situations have different load profiles, set time requirements, and substrate conditions. A horizontal patch product placed vertically will sag; a fast-set product placed in a deep section will crack. Matching product to situation is what makes Ardex repairs hold.
Yes. The Ardex bonded primer is what makes the repair material bond permanently to the existing concrete. Skipping or substituting voids the system warranty and risks delamination.
Yes, with the Ardex vertical-repair product that has non-sag rheology. Using a horizontal product on vertical work is one of the most common failure patterns we see in non-Ardex-spec repairs.
Properly matched and installed Ardex repairs last decades. The bond is engineered to outlast the surrounding concrete in most service environments.
Close, not exact. Ardex repair mortars come in standard colors that approximate concrete gray; exact match to old or stained concrete is not achievable. We are honest about the visible difference up front.
Three failed previous repairs popped loose. They used the right Ardex product for vertical work with proper bonded primer; the new repair has held two years. Product match was the difference.
Z. U5
Property Manager, Oshawa
★★★★★
Structural repair on a deep slab section. They specced the Ardex deep-section product, not the standard mortar another contractor had suggested. Repair holds load, no cracking.
Y. U5
Facility Director, Toronto
★★★★★
Multiple repair situations across one project, each with the matched Ardex product. The discipline of product-per-situation showed in the result. All repairs holding.
Q. U5
Commercial GC, Brampton
★★★★★
They were honest about color match limitations on the repair. Set the expectation properly, then matched as close as possible. No surprises at handoff.
X. U5
Warehouse Operations, Mississauga
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Describe the repair situation (crack, spall, vertical, structural) and the surrounding context, and we will spec the matched Ardex product and send a written quote.
