How To Level A Concrete Floor This Old House

Holes 1 inch or deeper require a concrete mix with coarse crushed stone aggregate which bonds well with existing concrete.

How to level a concrete floor this old house. Shallower holes need a sand mix. You have to prep the edges correctly and use the right materials. Simply pouring wet concrete into a hole in your driveway sidewalk or basement floor won t make for a lasting repair. 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.

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. Run a line outside the house and mark the low spots in the foundation. You can level an existing concrete floor with a leveling layer of new concrete but you must prepare the old concrete floor first. 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.

Assign a person to each jack and raise the jacks slowly and at the same time until the spirit level shows the house is level.