I just had a commercial building that I own done, and it came out absolutely fantastic.
2500 sf that had the original LVT from 1946. The black mastic underneath was on thick--so thick that it had to be broken and scraped up with hammer-drills.
Then the wet diamond-grinding--4 passes with a progressively finer grit. Alot of slurry to deal with--but not hazardous so no real issue. The machine was massive. It had to be hardwired into my panel with a 60A pigtail, and when they started it the lights dimmed....lol.
Final result exposed a beautifully finished pad with tons of great color---blues, grays, oranges. There are several spots that still have the "grain" of the 2X4 the original masons used to level it out when it was poured.
No real fissures anywhere and each of the segments in the space are basically slightly different; the result I suppose of the concrete mix being slightly different for each one.
$11k.
Worth every penny.
