Need a level floor

[djjsr]

I have a 100 year old building that is my workshop. Over the years, the 36' x 84' concrete floor has settled a little bit and is no longer level (probably never was).
I would like to have one area, about 12' x 28', perfectly flat and level. Using a couple of laser levels, I measured a variation of 1/2" from the lowest point to the highest.
Removing and re-pouring the concrete is not a good option and I was wondering if there is some self leveling material I could pour over top of the existing concrete. I can frame out the area and I'm not concerned that it will be a little higher than the rest of the floor.
Btw, the area is heated and air conditioned, so it's not subject to big temperature swings.

Any ideas?
Thanks

 

[1320stang]

Topping slab should do the trick. Be about 2" thick, as long as you're not putting a lift on top of it, you should be good to go. I'd use a fibercrete mix with smaller than normal aggregate, bonding agent added and have it polished. Use a weedburner to burn off the 'hairs' the fibercrete leaves behind. I'd also sandblast or rough up the surface of the area to be poured somehow.

 

[Wardster]

Find a contractor to inject grout beneath the slab to level it. This is more common than you might think. Just a suggestion.

-Wardster

 

[Cyberbear]

There is available a cement based product that is mixed with water that can be poured over an existing slab to make it as level as possible, like water seeking it's own level. I had this done in a bathroom/laundry area and it worked quite well.
Try checking with your local carpet/floor covering supplier or installer, they often have this done.

 

[djjsr]

CYBERBEAR - DO YOU EVER NOTICE THE DATES ON A POST?

This one is from 2008.

You're digging up a lot of zombies and it's getting really annoying !

 

[icsamerica]

lol 2008... anyway...This stuff linked below will do the trick. The subfloor must be clean and oil free or it will crack and flake up. It's best to clean well then abrade the floor. Then mix and pour. You'll need the stuff mixed and ready to pour because once you start pouring you shouldn't stop. This can get expensive but it does work. It's not a wear surface so it will have to be expoxy painted or topped some other way.

http://www.custombuildingproducts.c...ended-setting-self-leveling-underlayment.aspx