CSP stands for Concrete Surface Profile — a standardised 1–10 scale defined by ICRI (International Concrete Repair Institute) that measures the texture of a prepared concrete surface. The CSP dictates how well a coating or adhesive mechanically bonds to the substrate. Most epoxy coatings require CSP 3–4; heavy-duty systems and thick-build membranes require CSP 4–6. Achieving and documenting the correct CSP before a coating is applied is the single most critical step in preventing adhesion failure.

Diamond grinding uses rotating diamond-segment tooling to mechanically abrade the surface — precise, controllable, and suited to fine through medium CSP profiles. Shot blasting propels steel shot at high velocity across the surface — efficient over large open areas and effective for decontamination and medium CSP generation. Scarifying uses hardened star-shaped cutter wheels to aggressively cut into the concrete — used when heavy coatings, thick adhesives, or a deep CSP profile are required that grinding alone cannot achieve. Floortek selects the method or combination based on substrate condition, area, and the CSP specified for the coating system.

Yes. Diamond grinding and scarifying are effective for removing most floor adhesives (black mastic, carpet glue), paint, and failed coatings from concrete substrates. Heavily contaminated surfaces may require multiple passes or a combination of scarifying and grinding. On industrial floors with oil contamination, testing is conducted before work commences to confirm the correct preparation method and the extent of penetration.

Yes. Floortek documents CSP achieved, preparation methods used, and supervisor sign-off before any coating is applied. This record forms part of our quality management process and is provided to the builder or head contractor for inclusion in their project quality records. Substrate moisture content and ambient conditions at the time of preparation are also recorded where a coating application follows immediately.