Steel building and concrete and well everything has more than doubled since I built my shop the beginning/middle of 2019. My 50x80x16 shop with 4" wall, 6" roof insulation, 2 office windows, 1 36" man Door, 1 12x12 rool up door and 2 12x14 roll up doors tax delivered was $42.5K Concrete was another $27K. After I sold and moved back to parents I contact bunger steel and lone mountain concrete that did the work for me and prices were 2.5x what they were because "COVID lockdowns" which didn't help but we all know the real reason. My concrete floors were just hit with a floor polisher, than densified and sealed by myself. Than I used sikaflex to fill the cut expansion joints. I would make sure whatever concrete you get have them saw cut the expansion joints so you can easily fill them to keep crap out and keeps the slab nice and flat for working on and rolling stuff with small wheels on like tool boxes, engine hoists/stands etc.
I also agree if doing epoxy coating the heavy flake looks cool but sucks ass if you are working on something and not just parking a nice vehicle on it.
I also agree if doing epoxy coating the heavy flake looks cool but sucks ass if you are working on something and not just parking a nice vehicle on it.