Last you heard I was about to apply the epoxy sealer to the concrete countertops. That was about 2 weeks ago and so far the sealer appears to have adhered and looks really nice.
The tools used for the job were Epoxy 1040 from Contractor Source, a 3″ roller with 1/4″ nap, roller tray, small foam brush for corners and tight spaces and a bucket to mix the two parts of the epoxy.
Then pour the mixture into the roller tray and apply onto the counter with the roller brush in a thin layer. I went back over the same area to try and minimize the appearance of stroke lines.
The sink was the most difficult area to apply the sealer because of the vertical sides. Just keep rolling over the areas where drip marks appear and spread the sealer evenly.