Why Surface Preparation Matters
Epoxy floor coating is only as good as the surface it bonds to. If the concrete is not properly prepared, the epoxy will peel, bubble, or delaminate — sometimes within months.
The most common cause of epoxy failure is skipping or rushing surface preparation.
What Concrete Surface Profile Do You Need?
Most residential epoxy coatings require CSP 2-3 (Concrete Surface Profile). Mechanical grinding with a floor grinder is the most reliable way to achieve this.
Tools Required
Step-by-Step Process
1. Test for moisture
Use a moisture meter or tape plastic to the floor for 24 hours. If moisture is present, use a moisture-tolerant epoxy primer.
2. Remove existing coatings
If the floor has existing paint or sealer, remove completely. Use a coarser grit disc (16-30 grit).
3. Remove tile adhesive or contamination
Grind away any adhesive, oil, or surface laitance. Work in overlapping passes.
4. Profile the surface
Switch to 30-50 grit. Make two or three passes. You are aiming for a slightly rough surface with visible grind lines.
5. Clean thoroughly
Vacuum all dust. Any dust left on the surface will compromise adhesion.
6. Check the surface
Run your hand across the ground concrete. It should feel slightly rough like fine sandpaper.
7. Allow to dry
Wait at least 24 hours before applying epoxy. The surface must be completely dry.
Ready to Start?
Hire a floor grinder with everything included — pick up anytime 24/7 from our Robina location.