Concrete prior to epoxy treatment

[akpolaris]

I am planning on coating and entranceway and boiler room with some kind of epoxy treatment, haven't settled on which application yet. There aren't any oil staining problems but there is paint residue along the walls. I see most of the instructions require pretreatment of the surface by etching or "grinding" the surface. The grinder seems to be the preferred method. How serious a grind is required? Not taking off the "cream" I hope. This will create a bunch of dust so I found a guard/dust collector for my 4" peanut grinder. I will need to float/repair a couple of cracks in this process. Is it preferred to do the pretreatment prior to fixing the cracks? Thanks

 

[akpolaris]

Did I ask this question wrong?

 

[kaymccampbell]

You forgot to say, Mother May I.

 

[akpolaris]

I guess so

 

[Garage Flooring]

Sorry, Friday afternoons are pretty bus,y and the wife does not love it if I work on the weekends

If you can remove the paint by hand, you can just etch. If you are unable to get the paint off I would suggest a full grind using the coating removal tool from Diamabrush. Typically, you can rent locally.

 

[akpolaris]

I am remote so no rental of tools is a possibility. I purchased a diamond wheel and shroud assembly off Amazon. I planned on an epoxy paint since it is a small are with only foot traffic. Some is under a crowded stairway, really a cramped area. My main need is cement dust control. In the end when I do the main shop floor I will likely just do a good quality sealer. I'm cutting, grinding and welding in the main shop so I don't see any product that will remain intact over time in that environment. My initial question about the grinding was maybe unclear. I hope I'm not supposed to take this back down to the aggregate, just rough up the finish? Thank you

 

[tncatadjuster]

Skuff it up good. no need to remove unless there is contamination. Grind, repair crack, grind cracks smooth. Apply, it pays to not be short on material.
If all concrete is visible after paint removal, it should work.
Good luck with project.

 

[akpolaris]

Thank you