Aint used epoxy grout for some ten years. dh's technique did me nicely. Actually enjoyed the challenge of using the stuff. The stuff i used was extremely coarse which seemed to me to defeat the hygiene point of using it, as, though it was impervious its coarse texture would collect dirt. I hope that by now there is a fine version on the market
POWDERED GROUT
its frustrating to have grout drying off on the face of the tile,while the joint is not very fresh. In this situation, despite careful washing off it is so easy to wash grout out of the joints. One excellent way to finish off flush well smoothed joints is to incorporate a grout additive.For some reason theadditive prevents the grout washing out.Yes its a little more work involved,but it leaves a superb finish.Its advisable as soon as the tile surface dries sufficiently to lift off the dust with a damp sponge. Leaves virtually spotless surface.