How Long Does 2-Part Epoxy Take to Dry?

"Dry" means three different things with epoxy, and they happen at different times.

• Dry to the touch: the surface is no longer tacky. Usually within several hours.
• Ready to recoat or walk on: usually the next day for a floor epoxy.
• Full cure: the coating reaches full hardness and chemical resistance. For most floor epoxies, about a week. Wait that long before parking a car on it or cleaning with chemicals.

Each product page lists its own times. If you need the floor back sooner, our Garage One-Day System uses a fast-cure base coat and a polyaspartic topcoat.

What changes the timing

• Temperature. The biggest factor. Cold slows the reaction a lot. Warmth speeds it up. Stay within the range on the product page.
• Humidity and ventilation. These matter more for water-based and solvent-based products than for 100% solids.
• Film thickness. Thicker coats generate more heat and cure differently than thin ones.

Mistakes that slow or ruin a cure

• Changing the mix ratio. Extra hardener leaves soft or tacky spots.
• Too much pigment. Use the pigment pack sized for the kit.
• Mixing brands. Use the resin and hardener that come together.
• Poor mixing. Mix for the full time on the label and scrape the sides of the bucket. A mix wand on a drill makes this easy.

Not sure what your slab needs? Call a coating expert at (877) 703-7699, or build your kit and we will size it for you.