- Surface preparation home
- What's a concrete surface profile and why is it important?
- Steps in Concrete Surface Preparation
- Job planning: Involve the architect, engineer, and owner
- Know the job specifications
- Examine the surface
- Clean the concrete
- Roughen or "profile" the surface
- Repair surface defects
- Getting concrete ready for resurfacing
- Specification Requirements
- What surface condition specifications should cover
- Standards you should know about: ACI 503R, ASTM 4263, ASTM 4260
- When job specifications and manufacturer specifications differ
- Surface Preparation FAQs
- What about installing a nonbreathable coating?
- What happens if surface preparation contractor and coating installer are different companies?
- What about acid etching for surface preparation?
- How do I prepare surfaces for sealer application?
- Related Information:
- Cleaning concrete: How-to tips for cleaning concrete floors and slabs
- Buyer's guide to concrete surface preparation equipment
- Troubleshooting concrete cleaning problems: Advice from decorative concrete expert Chris Sullivan
- Tek Gel for profiling: Environmentally safe gel takes guesswork and hazards out of surface preparation
- Soda Blasting: A new way to remove sealers and coatings from decorative concrete
- Soybean Mastic Remover
- Subfloor Leveling Project
What's a Concrete Surface Profile, or CSP?
For proper bonding of concrete overlays and coatings, it's important to give surface the correct concrete surface profile, or CSP. To help contractors make this assessment, the International Concrete Repair Institute has developed benchmark guidelines for CSP—a measure of the average distance from the peaks of the surface to the valleys. They range from CSP 1 (nearly flat) to CSP 9 (very rough). As a general rule, the thicker the overlay or topping, the more aggressive the profile needs to be. A skim coat, for example, may require a light CSP of 2 to 4. For thicker self-leveling or polymer overlays, acceptable profiles generally range from CSP 4 to 6. Achieving surface profiles in the higher ranges often requires roughening by shotblasting or scarifying.
For a copy of ICRI's technical guide, "Selecting and Specifying Concrete Surface Preparation for Sealers, Coatings, and Polymer Overlays," call 847-827-0830 or visit www.icri.org.
Blastrac also offers a handy overview guide for choosing the correct surface preparation method to achieve a specific concrete surface profile.