What are the drying times of epoxy seal coats and flood coats?

Drying time of an epoxy seal coat:
Four to ten hours is optimal; however, you can wait as long as you'd like to apply the flood coat, with no sanding required.

Drying time of an epoxy flood coat:
If you're recoating within a four to ten hour window, no surface preparation is needed; the layers will bond together as one.

If ten hours have passed, you will need to lightly scuff the surface with 220 or 320 grit sandpaper.

After scuffing, you should wipe off the surface using a clean rag with denatured alcohol or acetone.
Do not use paint thinner (mineral spirits).

• The wipe down process with the solvent should be done with a clean rag that will not leave any lint on the surface.
• Continue cleaning until all sanding dust has been completely removed.
• You are now ready to re-coat. Don’t worry about the sanding scratches, as the next pour will fill in the scratches and restore its clean, clear, glasslike appearance.

Caution: DO NOT USE A TACK CLOTH. Tack cloths will leave oil on the surface, causing the epoxy not to bond properly and likely creating fisheye blemishes.