I'm putting a click lock floor in a 10 x 12 room with a concrete slab. I've used self leveling compound but still have some high spots that are maybe 3 foot diameter circles that are 3/16 high plus or minus. Scraping tools just don't cut it on the SLC. I don't think just bringing up the low spots around the high spots with roofing paper or another coat of SLC or whatever would do.

What is the easiest, simplest, quickest way to take these high spots down ? Can I rent something like a rotary floor sander/polisher and put some sort of grinding paper on it and wet grind it (to keep dust down) ? If so, specifically what kind of tool and what kind of grinding paper ?

Thanks in advance for your expertise and help,

Bob

Diamond cup wheel on an angle grinder.

AustinFloorguy-
MANY thanks for the quick reply. Looked at them and that's EXACTLY what I need.
Now: do you have a particular brand/type that works well for you ?
If at all possible I'd like to run it "wet" to keep dust down. I assume I'd periodically just spray the area and get it damp while I'm grinding and that's all there is to it ?

Bob

I run a porter cable that has a dust shroud and port as well. It is virtually free. I seem to recall that it was a bit expensive. It was also smaller I think it is a 5" diamond cup.

But the tool is way cool.

How many high spots you got Bob? I have rented a scarifier hooked to a good shop vac ..... not much dust that way. A scarifier will take off about 1/16" with each pass.

Hi Jerry,
I've got about 3 spots in need of work, each maybe 2-3 feet in diameter. I'll check out scarifiers today. May be cost effective and neater than a diamond cup grinder that I might never use again. But one or the other should do it. Thanks !

Bought a DeWalt diamond cup grinder today (4 1/2) and will give it a try.

The package shows a water faucet and another faucet with a line running through it. I assume this means the grinder cup can be run wet or dry, is this correct (no intructions with it). If wet (which I want, in order to keep dust down), I assume you just wet down the spot you are grinding a little and have at it, correct (e.g. no rocket science) ?

Bob