Unlevel concrete floor - would like to put on flooring

8/28/2017 at 3:05:56 PM

Call Lafarge. Self level. You will need couple cubic yards. And for the price I will finish in polishing concrete. You need a concrete finishing people.

8/28/2017 at 3:31:46 PM

There are two options that I can think of:

1> The fastest but most expensive option.

This would include re-pouring concrete and preparing the existing surface to adhere to the new concrete.

or

2> Fill any major divets / holes in the floor with a self leveling compound. Once the floor has been thoroughly cleaned from debris lay down a layer of foundation wrap on the floor, tuct tape all the joints, and run it partially up the wall if you can. Lay down 3/4 inch tongue & grove plywood (floating) in most areas and where there seems to be a dips & hollow points, drill some tap cons thru the wood and into the concrete so that the floor feels firm. It is not uncommon for hardwood floors to be installed on unlevel surfaces so long as the floor is straight. I would not install tiles using this option.

8/28/2017 at 9:02:51 PM

Hi Jim,

you can use either self leveling concrete (a lot of it) or just use 2x2 12" on centre apart, secured to the actual concrete. cover wirh 5/8" tongue and grove plywood and just taper to the highest point.

hope this help and good luck

8/29/2017 at 7:32:58 AM

Yes, self leveling concrete finish seems to be the most logical solution to this problem.

Obviously the larger your tiles are the straighter your floor must be.

8/29/2017 at 4:20:58 PM

Hi Jim, we recently finished a basement with similar levelling issues in Whitby - perhaps the same builder? Lol. The client submitted a review for us here on trusted pros. What we did was a combination of self-levelling cement and used drycore as the subfloor, including the drycore shims, to further compensate for the levelling issues.