Garage epoxy floors peel because the coating lost its bond to the concrete underneath - not because epoxy is a weak product. In Richmond, the two culprits behind roughly eight out of ten peeling jobs we inspect are slab moisture and skipped surface preparation. Fix the cause, not just the flake, and the new floor will hold for a decade or more.
Below we walk through how to identify which one is happening on your slab, what a proper repair involves, what it costs in 2026, and when it makes more sense to call us in than to keep patching.
Why garage epoxy floors peel in Richmond
Garage epoxy peeling in Richmond is a bonding failure between the resin and the concrete, and it almost always starts at the slab, not the surface. Epoxy is a rigid coating. It grabs onto concrete mechanically - the resin soaks into the open pores of a properly profiled slab and locks in as it cures. If those pores are closed, contaminated, or full of water vapour, the bond never forms properly and the first hot tire or freeze-thaw cycle starts lifting the edges.
Richmond's climate makes this worse than most of BC. We sit on the Fraser River delta, the water table is high in much of the city, and our winters swing above and below freezing for weeks at a time. That combination pushes moisture up through slabs all year. If your garage was poured without a vapour barrier - common in homes built before the mid-1990s - that moisture has nowhere to go but up through your floor coating.
For homeowners comparing options across the city, we install Epoxy Flooring in Richmond, British Columbia (BC) with moisture testing built into every quote, because guessing here is how the last floor failed.
The five causes we see most often
When we pull up a peeling floor, the pattern on the back of the flake tells us what went wrong. Here are the five we run into most in Richmond garages.
1. Moisture vapour driving up through the slab
Concrete is porous. When the soil under your slab is saturated - which is most of Richmond from November through March - water vapour migrates upward. If the slab has no vapour barrier, that vapour hits the underside of the epoxy and pushes. You get blistering first, then peeling in sheets. A calcium chloride test or in-situ relative humidity probe will tell you the emission rate before anyone touches a roller.
2. Acid etching instead of diamond grinding
Etching with muriatic acid was the standard for years. It leaves a surface that looks profiled but often isn't, especially on hard-troweled or sealed slabs. Diamond grinding opens the concrete properly and removes laitance, old sealers, and contamination in one pass. We grind every floor we coat - no exceptions.
3. Hot tire pickup
Park a car with warm tires on a floor that wasn't fully cured or was coated too thin, and the tire rubber can literally weld to the epoxy. When you drive away, it takes the coating with it. This is why we spec a minimum 8-10 mils dry film thickness on the base coat and a polyaspartic topcoat that resists heat better than standard epoxy.
4. Oil, salt, and de-icing residue
Richmond uses road salt and brine on the major routes, and it ends up on your garage floor every winter. Oil drips, brake dust, and salt residue all sit on the surface and block adhesion. If the slab wasn't degreased and ground back to bare concrete, the new epoxy is bonding to grime, not concrete.
5. Applying over a cold or damp slab
Epoxy needs the slab at 10°C or warmer and at least 3°C above the dew point. Coating a slab in a Richmond garage in February without heating it is a guaranteed failure. We bring in heaters and check slab temperature with an infrared gun before mixing a single batch.
How do you tell if it's moisture or bad prep?
You can usually diagnose a peeling garage epoxy floor by looking at where the failure started and what the underside of the flake looks like. Here's the quick field test we use.
- Peeling in sheets with a chalky white or grey back: moisture. The vapour pushed the coating off from below.
- Peeling in patches near the door or under tires: hot tire pickup or thin application.
- Peeling around cracks and control joints: the crack moved and the coating couldn't. Crack repair before coating prevents this.
- Peeling in a random pattern with dirt on the back of the flake: contamination - oil, sealer, or dust left on the slab.
- Blistering that pops when you press it: active moisture. Test the slab before you do anything else.
If you're not sure, a moisture test kit costs about $40-$80 and takes 24-72 hours. It's the cheapest insurance you'll ever buy on a floor coating.
How to fix a peeling garage epoxy floor
Fixing a peeling garage epoxy floor means removing every square inch of the failed coating, correcting whatever caused the failure, and recoating from bare, properly profiled concrete. There is no shortcut that lasts.
Step 1: Strip the failed coating
We use a walk-behind diamond grinder with a vacuum shroud to remove the old epoxy down to bare concrete. On a typical 400 sq ft Richmond double garage, that's a 4-6 hour job. If the coating is thick or there are multiple layers, we may need to bring in a ride-on grinder.
Step 2: Repair the slab
Cracks get routed out and filled with a semi-rigid epoxy patching compound. Spalled areas get ground back and rebuilt. If the slab has active moisture issues, we apply a moisture-mitigating primer or a vapour barrier epoxy before the base coat.
Step 3: Profile and clean
After grinding, we vacuum the slab, check the profile with a concrete surface profile (CSP) gauge - we aim for CSP 3 - and wipe down with a solvent to remove any remaining dust.
Step 4: Recoat
We apply a moisture-tolerant epoxy primer, then a full-flake or solid-colour base coat at 8-10 mils, then a polyaspartic topcoat at 3-4 mils. Total cure time before you can park on it is 24 hours for foot traffic and 72 hours for vehicles.
If your floor is beyond a simple recoat - heavy spalling, multiple failed layers, or a slab that needs structural work - we handle full Epoxy Floor Removal in Richmond, British Columbia (BC) and rebuild from bare concrete.
What it costs in 2026
Typical 2026 pricing in Richmond for a full strip-and-recoat on a 400 sq ft garage runs $2,200-$3,800 depending on how much coating has to come off and whether moisture mitigation is needed. A patch repair on a small area runs $400-$900. A brand-new Garage Floor Epoxy Coating in Richmond, British Columbia (BC) on a bare slab runs $1,800-$3,200 for the same size.
What to watch out for
Most of the peeling floors we're called to fix were installed by someone who skipped a step. Here are the mistakes we see most.
- Coating over a peeling floor. The new epoxy bonds to the old flake, not the concrete. It fails within a year.
- Skipping the moisture test. No test, no idea what you're dealing with. This is the number one reason floors fail in Richmond.
- Using a big-box epoxy kit. Those kits are typically 40-50% solids and go on at 2-3 mils. They're fine for a shed. They're not fine for a garage that sees road salt and hot tires.
- Etching instead of grinding. We covered this above, but it bears repeating.
- Coating a damp slab. If you can press a square of plastic on the slab for 24 hours and see condensation, stop.
- No topcoat. Epoxy alone will chalk and yellow under UV. A polyaspartic or urethane topcoat protects it.
If you're also dealing with cracks in the slab itself, we recommend handling those first - our Concrete Crack Repair in Richmond, British Columbia (BC) service routes and fills them so the coating has a stable base.
When to call a professional
Call a professional when the peeling covers more than about 10% of the floor, when you can see moisture wicking up through the slab, or when you've already had one coating fail. At that point, patching is throwing money at a problem that will keep coming back.
Our team at Richmond Elite Epoxy Flooring handles the whole job - moisture testing, grinding, slab repair, and a full recoat - in one visit for most residential garages. We test every slab before we quote, so you know what you're dealing with before you spend a dollar. If the slab needs moisture mitigation, we tell you upfront.
We also work with property managers and business owners across the city on Commercial Epoxy Flooring in Richmond, British Columbia (BC), where a peeling floor is a safety issue, not just a cosmetic one.
Frequently Asked Questions
Can I just recoat over a peeling garage floor?
No. Recoating over a peeling floor traps the failure underneath and the new coating lifts within 6-12 months. You have to strip the old epoxy back to bare concrete, fix the cause, and start fresh.
How much does it cost to fix a peeling garage epoxy floor in Richmond?
Typical 2026 pricing runs $2,200-$3,800 for a full strip-and-recoat on a 400 sq ft garage. Small patch repairs run $400-$900. Moisture mitigation adds $300-$700 if your slab needs it.
How long should a garage epoxy floor last?
A properly installed epoxy floor on a prepared slab lasts 10-15 years in a residential garage. Flake systems with a polyaspartic topcoat often go 15-20 years. Thin big-box kits often fail in 2-4 years.
Why is my epoxy peeling only where I park?
That's hot tire pickup. Warm tires soften the epoxy and the rubber bonds to it. It usually means the coating was applied too thin or the topcoat wasn't heat-resistant enough. A polyaspartic topcoat fixes this.
Do I need a moisture barrier under my garage slab?
If your home was built before the mid-1990s, it probably doesn't have one. We test every slab with a calcium chloride or in-situ RH test. If emission is above 3 lbs/1000 sq ft/24 hrs, we apply a moisture-mitigating primer before coating.
Get help with Epoxy Flooring in Richmond
If your garage floor is peeling, blistering, or lifting at the edges, we'll come out, test the slab, and tell you exactly what's causing it - no guesswork. Call Richmond Elite Epoxy Flooring at +7742316666 to book a moisture test and a written quote.