MirrorCoat

Fisheyes in a solvent-free epoxy coating have a number of causes. Here's how you can fix them.

1. Surface contamination - Uncured stain, uncured sealer, Pledge® or other silicone-type polish.

Solution: Allow the stain/sealer to cure completely and/or remove the pledge or polish as best as possible before proceeding. This may take a few days to weeks depending on the product used. Lightly sand the existing epoxy with 120-150 grit. Care should be taken not to cut through the stain. Apply another seal coat of epoxy using an 1/8" nap foam roller, working to fill in the craters. Allow the epoxy to cure hard, sand entire application flat, and re-coat to finish.

2. Coating too thin

Solution: This is a common problem observed when pouring less than the recommended depth on the MirrorCoat® flood coat. Allow the existing epoxy to cure hard and block sand flat using 120-150 grit until leveled. If the cratering is minimal, you can use a squeegee to fill in those areas with epoxy and then sand flat. Proceed with the flood coat at 4 ounces per square feet.

3. Surface too smooth

Solution: Fine sanding is typically the culprit for a smooth surface. This can be avoided by sanding with 120-150 grit. Allow the existing epoxy to cure hard and block sand flat using 120-150 grit until leveled. If the cratering is minimal, you can use a squeegee to fill in those areas with epoxy and then sand flat. Proceed by re-coating with epoxy.

What is MirrorCoat's heat resistance / temperature tolerance?

The sticky spots are most typically uncured resin or hardener which hasn't been completely mixed in. If it's excess resin it can be removed with a strong solvent like lacquer thinner. If it's excess hardener it can be removed with soap and water. The sticky spots can be either, or both. Both clean up methods might need to be used.

The voids can be filled with small quantities of newly-mixed Mirrorcoat, carefully using a spatula or squeegee to smooth out any excess material. Let this cure 24-hours and lightly sand the surface with medium-coarse sandpaper. Finally, apply an additional flood coat at 4 fluid ounces per square foot.