The Ultimate Guide to Fixing Uneven Concrete Floors

The Ultimate Guide to Fixing Uneven Concrete Floors

Are you tired of dealing with uneven concrete floors in your home or business? Look no further! This comprehensive guide will walk you through everything you need to know to fix those pesky uneven surfaces. From identifying the cause of the problem to step-by-step instructions on how to level your concrete floors, this guide has got you covered. Say goodbye to tripping hazards and unsightly sloping floors with the help of our expert tips and techniques.

Causes of Uneven Concrete Floors

Settlement of the Soil

One of the main reasons for uneven concrete floors is the settlement of the soil underneath the concrete slab. This can occur due to various factors such as poor soil compaction before pouring the concrete, changes in soil moisture content, or natural shifting of the earth over time. As the soil settles, it can cause the concrete slab to sink or crack, leading to an uneven surface.

Moisture Changes

Moisture changes in the soil or in the concrete slab itself can also contribute to uneven floors. When the soil beneath the concrete becomes too dry or too wet, it can cause the ground to shift, leading to cracks and unevenness in the concrete surface. Additionally, moisture can seep into the concrete slab and cause it to expand or contract, resulting in unevenness over time.

Poor Installation

Poor installation practices can also be a major cause of uneven concrete floors. This can include improper mixing of the concrete, inadequate reinforcement, or incorrect placement of the slab. If the concrete is not poured and cured properly, it can lead to uneven surfaces, cracks, and other structural issues. It is important to ensure that the concrete is installed correctly to prevent uneven floors in the future.

Assessing the Level of Unevenness

When it comes to fixing uneven concrete floors, the first step is to assess the level of unevenness. This will help determine the best course of action to take in order to achieve a level surface.

Visual Inspection

One way to assess the level of unevenness is through a visual inspection. Walk around the concrete floor and look for any noticeable dips or bumps. These can indicate areas that are not level and may need to be addressed.

Using a Leveling Tool

Another method to assess the level of unevenness is by using a leveling tool. This can be a simple tool such as a straight edge or a laser level. By placing the tool across the surface of the concrete, you can easily see where dips or bumps are present.

Professional Inspection

If you are unsure about the level of unevenness or if you suspect there may be underlying issues causing the unevenness, it may be best to seek a professional inspection. A concrete contractor or structural engineer can assess the floor and provide recommendations for fixing the unevenness effectively.

DIY Methods for Fixing Uneven Concrete Floors

When dealing with uneven concrete floors, there are several DIY methods that can help you achieve a smooth and level surface. Here are three popular options:

Using Self-Leveling Compound

Self-leveling compound is a popular choice for fixing uneven concrete floors. This product is easy to use and can help create a smooth and level surface in a relatively short amount of time. To use self-leveling compound, simply mix it according to the manufacturer’s instructions and pour it over the uneven areas of the concrete floor. Use a trowel to spread the compound evenly and allow it to dry completely before walking on the surface.

Grinding the Concrete

Grinding the concrete is another effective method for fixing uneven floors. This process involves using a concrete grinder to remove high spots and level out the surface. It can be a bit more labor-intensive than using self-leveling compound, but it can provide excellent results. Make sure to wear protective gear, such as goggles and a mask, when grinding the concrete to avoid inhaling dust particles.

Using Concrete Resurfacer

Concrete resurfacer is a thin layer of cement-based material that can be applied to uneven concrete floors to create a smooth and level surface. To use concrete resurfacer, simply mix it according to the manufacturer’s instructions and apply it to the uneven areas of the floor using a trowel. Make sure to work quickly, as concrete resurfacer dries fast. Once the resurfacer has dried, you can sand it down to achieve a smooth finish.

By using these DIY methods for fixing uneven concrete floors, you can improve the appearance and functionality of your space without having to hire a professional. Just make sure to follow the manufacturer’s instructions carefully and take proper safety precautions when working with concrete.

Professional Solutions for Fixing Uneven Concrete Floors


Mudjacking is a popular method used to fix uneven concrete floors. This process involves pumping a mixture of water, soil, and cement underneath the uneven concrete slab. As the mixture hardens, it lifts the slab to its original position, creating a level surface. Mudjacking is a cost-effective solution that can be completed quickly with minimal disruption to the surrounding area.


Slabjacking is another technique used to repair uneven concrete floors. This method involves drilling holes into the concrete slab and injecting a grout mixture underneath to lift and stabilize the slab. Slabjacking is a durable and long-lasting solution that can effectively level out uneven concrete floors. It is a popular choice for residential and commercial properties looking to restore their concrete surfaces.

Concrete Replacement

In some cases, concrete replacement may be necessary to fix severely uneven concrete floors. This involves removing the existing concrete slab and pouring a new one in its place. While concrete replacement is a more expensive and time-consuming solution, it ensures a completely level and structurally sound floor. This option is ideal for areas with extensive damage or where other repair methods are not feasible.

In conclusion, fixing uneven concrete floors is a task that requires careful planning, preparation, and execution. By following the steps outlined in this guide, you can successfully level out your concrete floors and create a more aesthetically pleasing and functional space. Remember to assess the severity of the unevenness, choose the appropriate repair method, and take the necessary safety precautions before beginning any work. With patience and diligence, you can achieve smooth and level concrete floors that will last for years to come.