Make multiple passes if needed to create a flat evenly filled area.
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.
Uneven exterior concrete slabs should be repaired for reasons of both convenience and safety.
Exterior wall on slab must be out on the edge.
You can level an existing concrete floor with a leveling layer of new concrete but you must prepare the old concrete floor first.
Add all of the concrete right away so none of the mixture has a chance to dry out.
An even concrete slab is very important if you plan to build anything on your slab or lay down any type of outdoor tile.
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.
This prevents water from leaking under the bottom of the wall to the inside of the building.
You can purchase concrete leveling compounds at home improvement retailers to level out the floor.
Pour and level the concrete.
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.
Over time concrete floors can settle unevenly or become uneven due to cracking and moisture.
Have a helper add or remove concrete in front of the screed as you pull it.