I made my concrete countertops 8 years, poured in a mold and then put into place. Followed the Cheng instructions, used the Cheng line of products. I'm about to resurface again and need some advice about those damn pinholes! The slurry didn't fill them; I tried the squeegy, I tried doing it by hand, I tried a lot of other things too. Ugh! Now Cheng has another slurry product --Surecrete Xtreme series slurry that promises it can fill those holes. Has anyone used it? I have a feeling that those pinholes are only the tip of the iceberg and that they are just the top to a larger hole and the air inside can't get out so nothing can get in.
My counters are 2 inches thick. If I ever do this again, and I probably won't, I would make my initial pour under an inch and vibrate that, and then add the rest of it. Two inches of concrete on top of air bubbles is a lot of weight, so how can air bubbles rise under all that pressure?
Another question--I'm going to lightly grind the counters with the finer diamond pads. Should I reseal too? How penetrating is the [Cheng] sealer on hardened concrete?
Thanks for reading. I'll post pictures of my counters next week.