Concrete Repair
& Surface Prep
Orange County
Every floor we coat or polish starts with thorough surface preparation — crack filling, joint repair, and diamond grinding. We also offer standalone concrete repair for slabs that need restoration before a new coating or as-is.
The Step That Determines Everything
The single most common cause of epoxy floor failure — regardless of whether it was installed by a professional or a homeowner — is inadequate surface preparation. A coating applied to contaminated, unrepaired, or unground concrete has no true mechanical bond. It sits on the surface like paint, and it peels like paint.
At PolyVex, surface preparation is non-negotiable. Diamond grinding, crack repair, and joint filling are not optional add-ons — they are the foundation of every floor we install. We would rather decline a project than skip the prep and risk a floor that fails within a year.
This commitment is why our floors consistently last 10–15+ years, while a budget installation without proper prep may start failing within 1–3 years. The prep is where the money is spent. The coating is what you see.
What Happens Without Proper Prep
- Epoxy bonds to surface contamination instead of the concrete — delaminates within months
- Moisture vapor pushes coating off the slab from below
- Cracks telegraph visibly through the finished coating
- Oil contamination prevents chemical bonding entirely
- Thermal expansion causes coating to lift at edges and seams
- Coating peels in sheets under vehicle hot-tire load
Concrete Repair Services
Orange County
We address every form of concrete damage found in Orange County garages, warehouses, and commercial slabs — both as part of a full floor coating project and as standalone repair work.
Hairline, structural, and control joint cracks filled with professional-grade polyurea or epoxy injection product matched to crack type, width, and movement requirements. Properly filled cracks won't telegraph through new coatings.
Saw-cut control joints filled with semi-rigid polyurea joint filler to prevent edge chipping and provide a smooth, continuous surface under epoxy and polished concrete finishes. Critical for high-gloss systems where joint edges would otherwise be visible.
Spalled concrete, pop-outs, and surface pitting patched and leveled using cementitious or epoxy-based patch materials compatible with our coating systems. Repaired areas are feathered smooth before grinding.
The entire slab is mechanically diamond-ground to remove surface laitance, contamination, and existing failed coatings — and to open the concrete's pores for maximum coating adhesion. For large commercial slabs, we use a Terrco 6200 orbital grinder for consistent, efficient coverage.
Existing epoxy, paint, adhesive residue, and failing sealers ground off to bare concrete — necessary before any new coating or polish can bond correctly. We assess the existing coating type and specify the appropriate removal method.
Moisture issues identified and addressed with penetrating sealers and moisture vapor barrier systems before coating. Particularly important in coastal Orange County areas and on slabs with elevated vapor transmission rates — moisture under an epoxy coating is a primary cause of delamination.
What Happens Before Any Coating Is Applied
Every PolyVex project — from a 400 sq ft garage to a 50,000 sq ft warehouse — follows this preparation sequence. The steps don't change. The equipment and repair materials scale with the project.
We walk the entire floor, identify cracks, assess concrete hardness, check for moisture, note any existing coatings or contamination, and measure the area. The assessment determines the prep scope and is included in your written quote.
All cracks are filled with appropriate polyurea or epoxy injection product. Control joints are filled with semi-rigid filler. Spalled areas are patched and allowed to cure fully before grinding begins.
The entire slab is mechanically diamond-ground to remove surface laitance, open the pores, and create a mechanical surface profile. For commercial jobs, our Terrco 6200 orbital grinder ensures consistent, efficient coverage across large areas.
The ground floor is vacuumed thoroughly, moisture readings are taken where relevant, and a final visual inspection is completed. Only when we're satisfied with the surface do we proceed to coating or polishing.
Concrete Repair FAQs
Minor crack filling, control joint repair, and standard diamond grinding are included as part of our base installation cost. Significant structural repairs, extensive patching, or removal of thick existing coatings may add cost — all of which is identified during the free on-site assessment and itemized in your written quote before any work begins.
Yes. We offer standalone concrete crack repair and surface restoration for clients who want to address damage without a full coating installation. This is common for warehouses with sealed or polished concrete that has developed cracks over time, or for property owners preparing a slab for a future coating project.
If a crack is not filled before coating, one of two things happens: the crack remains visible through the coating (particularly in high-gloss systems like metallic epoxy), or the crack continues to move and causes the coating above it to crack as well. Polyurea crack filler is semi-flexible, allowing it to accommodate minor concrete movement without transferring stress to the topcoat.
Yes. We service commercial and industrial concrete slabs throughout Orange County — warehouses, distribution centers, manufacturing facilities, retail spaces, and parking structures. Our Terrco 6200 orbital grinder handles large-area surface preparation efficiently, and we source commercial-grade repair materials appropriate for industrial environments.
After the Repair — What's Next?
Concrete repair and surface preparation are the foundation. Here's what we apply once your floor is ready.
Free on-site assessment throughout Orange County. We'll tell you exactly what your floor needs and what it will cost.