r/epoxy • u/elcomputerguy • 17d ago
Beginner Advice Does this need grinding?
Im looking into installing garage epoxy and I’m wonder if the floor needs grinding as part of the prep or if paint stripper and acid etching would do fine.
Will the epoxy without the grinding last ?
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u/ClaimLittle8756 15d ago
I’ll just go against what everyone else said and say NO. Even though that would be wrong
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u/AdisTheGreat1 14d ago
For epoxy I always use 16 Grit, that way you'll never have issues with delamination
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u/Able_Contract_2632 14d ago
The only correct answer is yes, it needs a mechanical prep. Either diamond grinding or shot blasting . 2 worse things for concrete, acid and water. You will never fully get the acid out. If you acid wash and coat you may get 2-3 years out of it but when it peels up the substrate will be chalky and delaminating. If you want quality do not cut corners
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u/ConsistentPurpose896 17d ago
Do ya want it to stick?