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Stesso

Check Profile and Final Cleanup

7:00
8:08
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At 7:00 in

Instructions & Tutorials Preparing Concrete For Epoxy. Acid Etching Hacks.

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What happens here

After rinsing the floor thoroughly, inspect the concrete to ensure that the acid has created a consistent, rough profile. The presenter suggests a texture similar to 100-grit sandpaper is ideal for epoxy adhesion. If any spots are still too smooth, reapply acid to those specific areas and repeat the rinsing process. Once satisfied with the profile, the concrete is ready for a final power wash to remove any remaining dust or residue created during the etching process. Finally, thoroughly rinse out the plastic sprayer and the muriatic acid bottle with water in a dirt area before proper disposal, ensuring no active acid remains.

Goal: Ensure proper concrete profile for epoxy and safely dispose of acid materials.

Tools and materials

  • Muriatic Acid Bottle MR. CLEAN — Container for the acid, to be thoroughly rinsed
  • Plastic Pump Sprayer — To be thoroughly rinsed after use
  • Water Hose / Power Washer — Final rinsing and cleaning of the concrete surface

What they say

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100 grit sandpaper. Not not too rough like 80, but about 100 grit would feel about good. And if it feels like it's 100 grit sandpaper, then it's rough enough that the epoxy will bond to it. I'm going to get my power washer ready. And you got to power wash this thing because you got to get all the the concrete dust that it actually creates. Get it up out of the pores of the concrete. And that'll even make it rougher. When I'm done with the muratic acid bottles, I'm going to take and rinse them out thoroughly before I dispose of them and make sure that you I'm going to rinse it out in a dirt area. That way, the acid will get diluted and not harm anything. Once I was done with my sprayer, I ran it all out of acid, set it out in the middle of the garage, and I grabbed my hose to rinse my sprayer off, fill it up full of water, and get it all clean, get all the acid diluted before power. Come back my second day, and I've checked my floor to make sure that it's got a nice profile to it, that it's rough enough to accept the epoxy. And there were some spots that were a little bit too smooth still over here. And so I actually went and sprayed some more muratic acid on those areas. And now I'm going to power wash it one more time.

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