How To Level Concrete Slab Against A Wall

Neglecting to prepare the old surface will prevent the new concrete from adhering correctly resulting in a weak bond between the two layers.

How to level concrete slab against a wall.

Pour and level the concrete. Have a helper add or remove concrete in front of the screed as you pull it. An exterior wall must be placed on the outside edge of the slab so the exterior siding laps down and over the edge of the slab. Exterior wall on slab must be out on the edge.

Add all of the concrete right away so none of the mixture has a chance to dry out. Make multiple passes if needed to create a flat evenly filled area. Consider a wood shed floor treated lumber joists and plywood. An even concrete slab is very important if you plan to build anything on your slab or lay down any type of outdoor tile.

Over time concrete floors can settle unevenly or become uneven due to cracking and moisture. Make sure you have enough concrete to fill the entire area to the depth you desire. This prevents water from leaking under the bottom of the wall to the inside of the building. Drag a straight 2x4 screed board across the top of the concrete forms to level the concrete.

Pour concrete onto the existing slab until it is around where you want the final level to be. You can purchase concrete leveling compounds at home improvement retailers to level out the floor.