How an Epoxy System Is Built
- Grind the concrete to open the surface (see prep).
- Repair cracks and pits.
- Base coat of epoxy, sometimes pigmented.
- Flake broadcast (optional) for texture and to hide dirt.
- Topcoat, often polyaspartic or urethane for UV and scratch resistance.
Strengths
- Builds a thick, hard layer that fills minor surface imperfections
- Bonds well to properly prepared concrete
- Usually less expensive per square foot than polyaspartic: $4–$10 vs. $5–$12 (HomeGuide)
Limits
| Issue | What to ask |
|---|---|
| Cure time. HomeGuide says epoxy can take up to a week to cure fully. | When can I walk on it, and when can I park on it? |
| UV yellowing. Many epoxies amber in sunlight. | Is the topcoat UV-stable? |
| Temperature. Epoxy cures slowly in cold conditions. | What are the minimum slab and air temperatures? |
| Hot-tire pickup on thin, store-bought kits. | Is this a 100% solids or high-solids system? |
Epoxy Kits vs. Professional Systems
Angi notes that water-based epoxy resin is the least expensive and least durable type and may need replacing every three to five years, while solid epoxies are the strongest and hardest to install. Most failures come from poor prep rather than the product: acid-etching instead of grinding, or coating over a slab with moisture coming through.
Is Epoxy Right for You?
Epoxy can be a good value if the garage gets little direct sun, you can stay off the floor for several days, and the installer finishes with a UV-stable topcoat. If you need the garage back quickly, look at polyaspartic.
Request a Garage Floor Coating Quote
Two quick questions. An independent coating company that works in your area will contact you to look at the slab and quote it.
Please note: Sioux Falls Garage Floor Coatings refers homeowners to independent coating installers. We are not a contractor.