Grind a pool deck to a CSP 3-4 profile before resurfacing: remove the old coating or sealer with PCD, then diamond grind with a 30/46 metal-bond disc to a uniform scratch. Expect to open up spalled or hollow areas and repair them before the new overlay goes on. Always let the deck dry fully before coating.
Pool decks see constant water, chlorine, and sun. The old sealer or paint has usually broken down in patches, and the slab often has spalling at the expansion joints. Light grinding is not enough; you need to open the surface mechanically.
| Overlay type | Recommended CSP |
|---|---|
| Thin acrylic stain | CSP 2-3 |
| Epoxy pool deck coating | CSP 3-4 |
| Cementitious overlay 3-6 mm | CSP 4-5 |
| Spray-knockdown texture | CSP 3-4 |
Browse concrete grinding discs category for the full metal-bond range.
No. The slab must be dry. Moisture trapped under the new coating causes blistering.
Yes, if it is loose or spalling. Grind it flat before applying the new system.
Within 24 hours. Dust settles on the ground and reduces adhesion.
Pool deck resurfacing rewards preparation: PCD off the old sealer, 30/46 metal bond to a CSP 3-4, and patch before coat. contact JOY TECH for tooling sized to your grinder.
