Garage epoxy usually fails for one of a handful of reasons: moisture pushing up through the slab, a surface that was never mechanically prepared, oil or old sealer under the coating, a thin kit applied in a cold or damp garage, or hot tires pulling up a weakly bonded film. Peeling patches, bubbles and blisters, and tire-shaped bare spots are all symptoms. Rolling another coat on top rarely fixes it, because a new coat is only as good as the bond underneath. The reliable fix is to find the cause, remove the failed coating, then choose between a properly prepared recoat and a cementitious overlay, which tends to handle damp Pacific Northwest slabs better. Olsen Concrete (Lake Stevens) does strip, prep, and overlay work on garage floors across Snohomish and King County. Call (425) 215-2560.
Epoxy is a thin film glued to the top of your slab. It fails when something breaks that glue line: water vapor from below, a weak or dirty surface, or a film that never cured properly. That is why the fix starts with diagnosis, not another gallon of coating:
Olsen starts with a complimentary phone/photo review and, when a visit helps, a free on-site assessment. Call (425) 215-2560 (Mon–Sat 7:00 AM–6:00 PM).
This page is for garages where an epoxy or similar film coating is already peeling, blistering, or lifting. Related Olsen pages:
Read the flakes. Peel off a loose piece and look at the back. Clean and smooth usually points to contamination or a surface that was never profiled. Concrete dust stuck to the back suggests a weak surface layer. Blisters with damp concrete underneath point to moisture. These are clues, not a lab test, but they help steer the conversation.
Spot-patching the peeled areas, or rolling a fresh coat over the whole floor, feels like the quick answer. It usually fails for predictable reasons:
Spot repair can make sense when the failure is truly limited, for example one oil-soaked spot after the leak is fixed and the rest of the coating is tightly bonded. When peeling or blistering is spread across the floor, full removal is usually the honest starting point.
Once the failed coating is mechanically removed by grinding and/or shotblasting, the bare slab can be screened for moisture, contamination, cracks, and soundness. Then:
Where Olsen fits: our work is the strip, prep, repair, and cementitious overlay side. If you want a new decorative flake or film system, we will tell you honestly whether the slab is a candidate and point you toward the right next step. For more on the overlay path, see concrete overlays.
Whoever does the work, ask these questions before the next coat goes down:
Olsen does not publish moisture pass numbers, $/sq ft prices, or lifespan promises online. Those depend on your slab and the system, and they are confirmed on assessment.
A complimentary phone and photo review is the fastest way to start. Send:
Call (425) 215-2560 or start from olsenconcrete.com. Next step: photos → phone review → free on-site assessment. Olsen is based in Lake Stevens and serves Snohomish and King County. Hours Mon–Sat 7:00 AM–6:00 PM. More answers: concrete repair FAQ.
More prep and candidacy answers live on our concrete repair FAQ.
The most common causes are moisture vapor coming up through the slab, a surface that was not mechanically prepared, oil or old sealer under the coating, application in a cold or damp garage, and hot-tire pickup on a thin or weakly bonded film. Finding the cause matters more than the patch. Call (425) 215-2560 for a complimentary photo review.
Blisters usually point to moisture or vapor pressure under the coating, especially on older on-grade slabs without an effective vapor barrier. They can also come from coating a slab that was too cold or damp during application. A moisture screen on the bare slab should come before any new coating.
Hot tires soften against a floor coating and grip it as they cool. When the car backs out, a thin or weakly bonded film can lift with the tires and leave tire-shaped bare spots. It is mostly a sign of a bond or thickness problem, not just hot weather.
Usually not successfully. A new coat is only as strong as the failing coat under it, and the original cause is still there. When peeling is widespread, the failed coating should be removed and the slab screened for moisture and contamination before choosing a recoat or an overlay.
Often, yes. Cementitious overlays are generally more tolerant of damp slabs than impermeable film coatings, though every product still has moisture limits. If moisture caused your epoxy to fail, a cementitious overlay after full removal and screening is frequently the more durable path. Olsen confirms candidacy on a free on-site assessment.
Olsen focuses on stripping failed coatings, surface prep, repair, and cementitious overlays. If a new film coating is the right answer for your slab, we will tell you honestly and point you toward the right next step rather than force a mismatch.
Olsen Concrete is based in Lake Stevens and serves Snohomish and King County. Start with a complimentary phone/photo review; if a visit makes sense, the on-site assessment is free. Hours Mon–Sat 7:00 AM–6:00 PM. Call (425) 215-2560.
Send photos of the peeling, blisters, or tire marks, plus the back of a loose flake if you can, for a complimentary phone review. If a visit makes sense, the next step is a free on-site assessment. There is no assessment fee. Hours: Mon–Sat 7:00 AM–6:00 PM. Call (425) 215-2560.
Or call (425) 215-2560. Licensed · Bonded · Insured · Lake Stevens, WA · Serving Snohomish and King County · Mon–Sat 7:00 AM–6:00 PM · olsenconcrete.com.