Problem
DIY epoxy peeling
Your epoxy is peeling. It is almost always a substrate problem, not a product problem.
Diagnostic indicators
How to recognise this on your floor.
None of these are diagnostic on their own. Two or three together usually means we are looking at the same thing.
Patches lifting at the
Patches lifting at the edges, peeling back like sunburn
Blisters or bubbles trapped
Blisters or bubbles trapped under the surface
Flakes coming off when
Flakes coming off when you sweep or hose down
Discoloured or chalky areas
Discoloured or chalky areas where the topcoat has thinned
Tyre marks pulling colour
Tyre marks pulling colour off the floor
Dust returning within weeks
Dust returning within weeks of recoating
Plain English
What is going on.
DIY epoxy kits are sold as a one-day weekend job. The reality on a Melbourne slab is harsher. The kits ship with generic primer, no moisture test, and a prep instruction that does not match a real garage. Inside 18 months, almost every kit we see has lifted somewhere.
We see this at least twice a week. It is rarely the homeowner's fault. The product was not engineered for the slab it landed on, and there was no diagnostic step before the can was opened. The fix is not to argue with the kit. The fix is to read the slab properly, then choose a coating that suits it.
Most floors are salvageable. A full strip and recoat is the common path; sometimes an over-coat works if the existing bond is sound. Either way, we test first, then quote.
Engineering cause
Why DIY epoxy fails
Four mechanical reasons, in order of how often we find them. Moisture rising through the slab pushes the coating off from underneath. Inadequate prep leaves the old surface contaminated, so the new epoxy has nothing to grip. Generic primer cannot bond to a slab that is oily, dusty, or chemically sealed. And there is no warranty path back to the kit supplier once the bond breaks.
None of these are exotic. They are the same four checks any commercial coating crew runs before they open a tin. The DIY market skips them because the kit cannot include them in a $400 box.
The path
What we do about it
Recommended path: DIY rescue path
Bill walks the slab. Tests moisture, tests adhesion on the existing coating, photographs the failure pattern, then writes a one-page diagnostic. From there you have three honest options: full strip and recoat, scuff and topcoat if the bond is sound, or a sealer if you just need to slow it down for a season. We publish the costs of each before you commit.
Because the diagnosis is the engineering work, the rescue path runs through the garage page, not the advisory page. You do not need a paid Tier 3 brief to lift a peeling DIY coat. You need a fixed-price quote and a crew with a grinder.
Get in touch
A quick line and a couple of photos.
Drop your details. We will follow up in business hours and point you at the right next step.
Common questions
Before you ask, this is what most people want to know.
In most cases, yes. We have lifted DIY coats off slabs that were ten years old and finished them properly. The exception is a slab with active rising damp the homeowner does not want to address; in that case we will say so before we quote.
Full strip and recoat sits between $50 and $80 per square metre, so $2,500 to $4,000 for a typical 50 to 60 square metre garage. A scuff and topcoat is $20 to $30 per square metre when the existing bond is sound. We confirm the path after we see the floor.
Two to three days on site for a strip and recoat. One day to lift the old coat, one day for the slab to release moisture, one day for the new system. You walk on it 24 hours after the topcoat, drive on it after 48.
Not if the substrate is read correctly and the right system goes down. We back our remedial work with a 10-year workmanship warranty on full strip jobs. On a scuff and topcoat the warranty is 5 years, conditional on the underlying coat staying stable.
It will keep peeling. The exposed concrete will absorb oil, dust, and chemical staining. Eventually the slab itself becomes harder to coat because the contaminants drive deeper. The longer you wait, the more prep we have to charge for.
No. Garage paint and floor enamel will fail faster than the original kit because they have even less adhesion engineering behind them. If the underlying bond is broken, you have to break it the rest of the way and start clean.
Ready when you are
Most rescues end on a properly engineered garage finish.
Three finish tiers, prices on the page, fixed before we start.