Maximum Thickness - Depth
Flood coats are applied in 1/8" layers at a time, as many as desired can be applied. Additional coats should be applied within 4 to 6 hours. If re-coated within this time period no sanding is necessary between layers. After 6 hours, you will need to wait until the following day and then you will need to lightly sand the surface with 220 or 320 grit sandpaper and then wipe off the sanding dust with denatured alcohol or acetone (do NOT use mineral spirits).
Please note that after a depth of 1 1/2" the epoxy can start to lose some of its clarity. That is the nature of any epoxy coating.