How To Raise Level Of Existing Concrete Floor

Determine the underlying problem.

How to raise level of existing concrete floor.

There are several reasons why you might want to raise the level of a concrete slab. To level a floor start by removing the existing flooring. You will have to make sure your joists can handle the addition of considerably more weight from the plywood subfloor and any floor coverings. Over time concrete floors can settle unevenly or become uneven due to cracking and moisture.

The foam will expand and harden filling the void in the ground and leveling the driveway. Apply a coat of the special latex primer if called for in the leveling compound instructions. So how do you raise a concrete slab with foam. Here s how to go about applying floor leveling compound to a concrete slab.

Slabs also can crack flake or deteriorate making them more of a liability than an asset. Once the compound reaches a creamy consistency pour a thin layer into the sunken sections then smooth out inconsistencies with a hand trowel. Clean the floor thoroughly to remove any dirt or grease. Leveling a floor can be either a do it yourself project or a job for the pros.

Slip shims under the low end of the 2x4 rail until it s perfectly level then use a scribing tool to transfer the unevenness of the floor onto the rail. A plywood subfloor will bridge any minor waves in the existing floor and leveling compound would help too. The surface of the new concrete will be level with the top of the form boards. Place wood form boards on their sides in the trench and nail them together at the ends.

To resurface an uneven concrete slab begin by laying a long straight 2x4 wooden rail across the concrete slab floor with one end positioned on the high point in the room. Then mix leveling compound according to the instructions on the package in a large bucket. Before taking steps to level a floor you must find out why it s not level. Use 5 8 inch masonry bit to drill a hole through the concrete and spray the foam into it.

Whether you want to refinish an uneven basement floor or replace or add new flooring on top of an existing concrete floor somewhere in your home you most likely will need to level the concrete floor. Locate the dips get the right equipment and foam. For instance if you re raising the level 2 inches use 2 by 6 inch form boards.