How to level existing concrete slab

How to level existing concrete slab? Detailed Guide for Newbie in 2024

For any sort of structural working, a concrete slab works like a magic lamp. It helps to bind everything together, ensuring a better surface and making the floor smoother.

But to get this smoother surface or floor, you need to use the concrete slab evenly, flawlessly, and perfectly. We often see many people stress over ‘how to level existing concrete slab’ or ‘how to slope existing concrete slab’. But we can assure you that it is not that tough of a job.

The concrete slab is pretty user-friendly. It follows a simple rule; you be gentle with it; it’ll be gentle with you. All you have to do is to follow some simple procedures to make the existing concrete slab even and smooth and make sure that there are no curves or irregularities on the surface.

You can do that by leveling concrete slab with foam or other material. There are plenty of ways. To lessen your stress and to make everything easy for you, here in this article, we have discussed the easiest and less time-consuming procedure that will help you to level the existing concrete slab.

So, without wasting any time, let’s get into it. You can read about How to Run Water Pipe in Concrete Floor?

What is Concrete Slab?

What is Concrete Slab

Before going into the details of leveling the existing concrete slab, first, we must know what a concrete slab is. Otherwise, it would be hard to use any other substances with the concrete slab for the purpose of leveling it.

Concrete slabs, which are both highly frequent and very significant structural elements, are designed so as to provide functional surfaces that are flat. It is a horizontal component of the structure, and its top and bottom surfaces are parallel to one another or very nearly so.

When compared to its length, the depth of a floor made of concrete slabs is rather shallow. The concrete slab is considered to be a bending member of two dimensions instead of being – a dimensional bending member like the beam.

You can do the work of bending, shear, and torsion at the corners of the structure as well with the help of this concrete slab, as it has been made specifically to do these works. In addition to being one of the most efficient members in a structure due to its horizontal orientation and smaller thickness in comparison to its span, the concrete slab is a bending member.

In addition to being one of the most efficient members in a structure due to its horizontal orientation and smaller thickness in comparison to its span, the concrete slab is actually an essential bending member. You can check our guide on Cheapest way to level concrete floor?

Things Needed to Know and Considered

Things Needed to Know and Considered

The process of fixing uneven concrete slabs is quite easy, and we have mentioned that before but there are some cautions that you need to know and follow to make sure that you don’t follow any inconveniences while doing it.

First of all, you need some tools like wrench, ratchet, torque testers, screwdrivers, and fasteners; basically, in short, all the fastening assembly tools.

Then you need powerful grinding equipment, a diamond grinding wheel that will make the process smoother, one vacuum cleaner, and a whole set of safety gear.

While doing the process, you must ensure dust control; otherwise, it will be a total mess, and you can do that by keeping everything in motion. You also check our guide for How to level uneven concrete floor for laminate?

Process of Leveling Existing Concrete Slab

Process of Leveling Existing Concrete Slab

The concrete slab is supposed to be very durable, sturdy, robust, and versatile, which implies that you must need to be careful and gentle while leveling the existing concrete slab. The process of leveling the excising concrete slab includes a few processes.


The very first step is the preparation stage which is very important because the preparation stage means preparing the base.

As a part of the preparation stage, you need to remove all the things like the furniture or other materials staying on the slab or the floor. Now, you must make sure that the floor is cleaned thoroughly and properly. There shouldn’t be any dirt, grease, or chipped paint left as it can hamper the process.


Now, you need to make up your mind on how much larger or shorter you need to make the slab in order to make it even. After you are done marking the places you need to even out, you will see the total place or space that needs to be done. There’s one thing that you need to keep in mind while using padding on the floor. If you are going with the thick padding, using it only on the uneven areas will do the work, but if you are using the hardcore one, which exposes the surface, then you definitely need to make sure that the entire floor is covered, every inch.


Now, your surface is ready. Wear the safety gear and use a large floor grinder and keep it moving; move it everywhere. But don’t be aggressive. It will crack the floor. While doing this, you need to keep in mind that there’ll be so much dust, so to control it keep a vacuum machine and a sprayer of water.


In this step, you need to create a paste that is thin but uniform in texture using the leveling compound. First, even out the surface by spreading the leveling primer. Make use of a push broom with gentle bristles. Ensure that the primer is applied in a uniform manner.

After the primer has had time to dry, you should apply the leveling compound to any low spots that remain. Make use of a squeegee to move and draw the compound to the desired location. A self-leveling compound has a thin consistency and already has the ability to level itself. And that’s a wrap, and you are done with leveling your uneven concrete slab.

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Final Words

The uneven concrete slab will look very odd, and it can be dangerous, especially for the old and the children’s family members as well. In addition, it is very much troublesome to clean.

That’s why making sure that the existing concrete slab is at an even level is a must. We have discussed almost everything about how you can level an uneven existing concrete slab, and I hope it’ll help you and fulfil all your queries.