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How To Prep Concrete to Prevent Coatings Failure
While conditioners can go a long way toward preparing a concrete surface for topcoating, before any coating is applied, some simple steps should be taken to assure a proper bond.
- Most coating failures occur not because of improper coating application, but because of inadequate surface preparation.
- For a coating to properly adhere to a concrete surface, the surface must be clean, dry, dull, sound, and free of surface defects such as cracks or spalling.
- These areas should be repaired using the appropriate patching compounds.
- The surface to be coated should have a slightly rough profile – approximately equivalent to a piece of 120-grit sandpaper.
More tips:
- Be sure to clean the concrete to remove any grease, oil, dirt, old paint or other contaminants, using one of the methods recommended by the manufacturer of the coatings you will be using for the job.
- It’s important that the surface is properly prepared so that it is compatible with and receptive to the specific coatings you plan to apply, so be sure to check your tech data pages.
- Pebble blasting, power washing, acid etching or cleaning with a commercial concrete cleaning agent are among the methods that may be recommended.
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