How To Frame A Wall On Uneven Concrete Floor

Cut pressure treated 2 x 4 boards to length and lay them along the chalk line.

How to frame a wall on uneven concrete floor.

Use a hammer drill with 3 16 masonry bit to drill a hole through the wood and into the concrete floor. Measure and cut two two by fours one of. Then remove the tape. Use a long level or a laser to mark straight up from the bottom plates to the ceiling.

Fasten your bottom plates to the floor where you want your walls. 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. Snap chalk lines between each set of marks to guide the wall installation later. Use a chalk line on the floor to indicate wall placement and cut a 2 by 4 to fit.

When a floor is uneven the best way to frame a new wall is to set the floor and ceiling plates first. Measure all the studs individually and toe nail them into the plates. I use tapcon concrete screws to secure the wood to the floor. Mark the length of the new wall on both the adjoining wall and floor.

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. In this video i show you the method that i use to attach basement framing to a concrete floor. Use an impact driver to drive a 3 tapcon screw through the wood and into the floor.