Epoxy Flooring · Tweed Heads
Why Epoxy Floors Fail — Preparation and Diamond Grinding Explained
Peeling epoxy is almost never a resin problem. It's a prep problem — here's what proper surface preparation actually involves.
Mechanical profile beats chemistry
Epoxy bonds mechanically. The slab has to be opened up to a concrete surface profile (CSP 2–3) so resin can key into the pores. Diamond grinding achieves that consistently; acid etching does not, and it leaves salts behind that undermine adhesion.
The preparation sequence
Every floor we coat follows the same order.
- Strip coatings, adhesives and sealers; degrease oil-contaminated areas
- Diamond grind the full slab with dust-extracted planetary grinders
- Repair cracks, spalls and joints with resin mortar
- Moisture-test the slab (relative humidity or calcium chloride)
- Vacuum, tack off, then prime while the profile is clean
Moisture is the silent killer
Slabs on ground without an effective vapour barrier push moisture upward. If vapour pressure exceeds the coating's tolerance, you get blisters and disbondment months later. A moisture-mitigating primer costs a fraction of recoating the whole floor.
Signs your floor was prepped badly
Coating lifting in sheets rather than tearing, a shiny slab under the failed patch, bubbles clustered near walls or door thresholds, and peeling that starts where tyres turn. All of those point back to profile, moisture or contamination.
Get a free quote from a licensed epoxy flooring in Tweed Heads
Munn & Co. Finishes is fully licensed in NSW (461243C) and QLD (15536255), insured and based locally — so we can usually quote Tweed Heads jobs within 24–48 hours. Call 0444 528 452 or request a free written quote online and we'll walk the job with you, photograph problem areas and send a clear, fixed-price scope before any work begins.
Epoxy floor preparation — frequently asked questions
- How much does epoxy flooring cost in Tweed Heads?
- Epoxy floors in Tweed Heads usually run $60–$120 per square metre installed, depending on the existing slab condition, grinding and moisture testing required, and whether you choose flake, metallic or a plain solid colour.
- How long before I can drive on a new epoxy floor?
- Foot traffic is generally fine after 24 hours and vehicle traffic after 5–7 days. Full chemical cure takes about a week in Tweed Heads's humidity, so we schedule the job around when you need the space back.
- Does the concrete have to be ground first?
- Yes — diamond grinding the slab is what gives epoxy something to key into. Roll-on kits applied over sealed or dusty concrete are the most common reason coatings peel.
- Are you licensed and insured to work in Tweed Heads?
- Yes. Munn & Co. Finishes holds an NSW painting licence and a QLD QBCC licence, and we carry full public liability insurance. Licence and insurance details are supplied in writing with every Tweed Heads quote.
- How do I get a quote for epoxy floor preparation in Tweed Heads?
- Call 0400 000 000 or send the online quote form. We book a free on-site walkthrough in Tweed Heads, then send a fixed written quote — surfaces, products, coats and timeline — usually within 24–48 hours.