What CSP means
Concrete Surface Profile (CSP) describes the texture left by preparation, from the near-smooth result of acid etching (CSP 1) to the heavily fractured surface left by a concrete breaker and blast (CSP 10). ICRI sells molded replica chips so applicators and inspectors can compare the actual floor to an agreed reference.
Typical methods by profile
| CSP | Typical preparation methods |
|---|---|
| 1–2 | Acid etching, grinding |
| 3–4 | Light shotblasting, light scarifying |
| 5–6 | Medium shotblasting, scarifying |
| 7 | Heavy abrasive blasting |
| 8–9 | Scabbling, heavy scarification |
| 10 | Handheld concrete breaker followed by abrasive blasting |
Matching profile to system
Thin penetrating sealers need only light profiles, while high-build coatings, broadcast floors and polymer overlays need progressively rougher ones to gain mechanical bond. Always use the CSP range on the coating manufacturer’s data sheet, and confirm bond with pull-off testing (ASTM D7234).
Acid etching cautionAcid etching is often discouraged for high-performance coatings because residues and weak laitance can remain. Mechanical methods are generally preferred.
About this summaryThis is an independent, plain-English overview for orientation. It does not reproduce the standard. Always work from the current official edition, available from the publishing organization.