Short answer: for most DIY garages, a two-part epoxy kit with an etcher and flakes included; for heavy use or a harder film, a higher-solids (up to 100% solids) kit. Prep decides success more than the brand.
| If you want… | Look for |
|---|---|
| 1-car garage, first DIY | Water-based 2-part kit; check that coverage covers your sq ft at 2 coats |
| Hot tires, chemicals, workshop | Higher-solids / 100% solids epoxy, thicker film (mils calculator) |
| Slippery when wet | Add an anti-slip additive or broadcast flakes |
| Damp slab | Do the plastic-sheet moisture test first; you may need a moisture-blocking primer |
| Fast return to use | Check walk-on and drive-on times on the label |
A 50% solids coating leaves half its wet thickness behind as dry film; 100% solids leaves nearly all of it. That is why coverage numbers vary so much between kits. Plug the solids % and target mils into the garage floor epoxy calculator to compare kits fairly.
Divide your floor area by the kit's stated coverage at your number of coats, and round up. Porous concrete often drinks more on the first coat.
It builds a thicker film per coat and is harder, but has shorter working time. Water-based kits are more forgiving for first-timers.
Usually poor prep: skipped etching, oil contamination or moisture coming up through the slab.
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