grinding question

[junk yard dog]

I just purchased a home with detached garage, the floor was done poorly. Looks like they over worked the concrete when it was poured. There is gravel sticking up and some waves. I was wondering if I rented a walk behind concrete grinder would it cut down the gravel that protrudes or should I pour some quickrete overlay ?

thanks

 

[Shea]

What are you trying to accomplish? What is your ultimate goal for the floor?

 

[junk yard dog]

pretty much smooth it out and level some of the low spots/waves. will overlay stand up to cars, floor jacks, jackstands etc.... ?

 

[LegacyIndustrial]

Th grinder will take down the aggregate. The waves, however, will be a challenge.

Once you have prepared the surface you could apply an overlayment or a self leveling epoxy.

 

[junk yard dog]

ok thanks, I was worried about the grinder because a buddy told me the gravel would be hard to grind down level

 

[fury9]

How tall is your garage door?

 

[junk yard dog]

8ft, but i don't want to loose much clearance

 

[fury9]

IDK, you might be better off just getting a slush coat on top of it? I don't know though, I ain't no concrete expert

 

[dcs Inc]

A larger foot print grinder would "help" with the waves. This might be good for the double head Edco grinder. It is not a planetary so the heads dont follow the contour of the concrete. Still use the diamond heads on it.

As far as an overlay, use a good product, not the cheap **** stuff.

 

[LW CONCRETE]

Agreed, stay away from low or DIY product. Yes a good SLC or epoxy based overlay might work well. It's all in the prep

 

[Prepman]

If the cream is not coming loose from the base, you can shave the high spots with a diamond grinder. An Edco 10" Turbo would be less likely to tear the gravel out. I would use an aggressive 20 grit diamond blade which will cut quicker. If you wet the floor, you can draw around the dry high spots with a wax marker.

The floor would have to be sealed, preferally with an epoxy or poly-aspartic coating system. I installl floors for a living. If you are going to do the prep, you might as well go ahead and do it right. It will add value to your house, if you sell it in the future.