Originally Posted by slownsteady
Ok, so maybe it's my lack of knowledge at this point, but if you were going to lay down leveler anyway, why wouldn't you do it in the first place and save all that dust & sweat & cost??
I'm definitely not the expert; but, here's my take. It rained on the concrete while it was being poured, apparently enough to cause the top layer to be really dusty. It was also very pitted and uneven; so, it would've taken multiple skim coats to eliminate all the flaws. I wanted to make sure the overlay would adhere properly to the existing concrete; so, i used a grinder to get up all the soft dusty top layer. The grinder cost me less than $500 to rent (including supplies); so, i thought this would be more cost effective than multiple overlays. Yes, it was hard work to grind down 1800 square feet; but, i think it was the right way to do it.