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How to Fix Crumbling Concrete Basement Floor | 6 DIY Methods

how to fix crumbling concrete basement floor

Last Updated on December 13, 2022

Crumbling concrete in your basement can be unsightly and problematic. Not only is it a trip hazard, but losing it can also cause serious cuts if you happen to fall on it. If the issue is severe enough, you may even need to replace the entire structure.

Every year a large number of homeowners have to deal with deteriorating cement in their homes. It’s not always easy to find out how to fix crumbling concrete basement floor without spending a lot of money or making the situation worse.

However, there is no necessity to despair if your foundation slab is damaged. Fortunately, there are a few things you can do about cracked tiles in your home. With a bit of time and effort, you can have a safe and attractive home again.

How to Fix Crumbling Concrete Basement Floor Using Various Methods?

How to Fix Crumbling Concrete Basement Floor Using Various Methods

The main components of concrete are cement, sand, and water. Mixing the ingredients is relatively simple, and the end product is among the hardest construction compounds ever developed.

While incorrect combining is inherently dangerous, it can lead to cracks in materials that ultimately result in its crumbling. A weakened foundation is critical and must be patched to prevent it from getting worse.

For fixing brick foundations that are unstable, here are some techniques you can use. The best approach is usually to rely on more than one approach to fix the problem.

Method One: Use Concrete Floor Paint

You can cover stains and deterioration to stone floors with concrete coat paint at an inexpensive cost. Moreover, it also helps to prevent further wear and tear. Before you start spraying, however, it is important to repair any cracks or holes in the masonry so that the coating will adhere properly.

Once the changes are made, it is time to begin decorating by first brushing on a primer and then a layer of exterior finish. For best results, it is advisable to apply two coats of primer, allowing each coat to set completely before adding the next. Once the final coat is dry, you can then enjoy your newly painted concrete basement wall.

Method Two: Use Floor Epoxy

One way to repair the damage is to coat the floor with epoxy. This type of adhesive is specifically designed for bonding and sealing concrete surfaces. It is available in a variety of colors, so you can choose one that will match the existing decor.

To apply the plaster, first, use a wire brush to remove any loose debris from the drywall. Once the ground is clean, mix the resin as directed. Then, use a putty knife and attach a waterproof paste to the broken areas.

The epoxy will need to cure for 24 hours before you can walk on it. However, once it is cured, the blemishes will be fixed and looks new again.

Method Three: Resurface the Concrete Floor

In order to fix a ruined bottom section, a concrete floor resurfacer can be applied. To begin, clean the ground, removing any dirt, oil, or other debris. Next, the product should be blended properly. Once it is mixed, it can be spread over the area using a trowel or squeegee.

After the liquid has been applied, it should be allowed to cure for the amount of time specified by the manufacturer. When it cures, it will provide a durable and smooth finish that will help stop additional deterioration of the ground.

Method Four: Apply a Concrete Floor Patch

The concrete patch is a product that is used to level out and repair surfaces. It is a pre-mixed cementitious material that is composed of portland plaster, silica sand, and other additives.

This paste can be applied by trowel or putty knife, and it dries to a hard, durable finish. It comes in many colors and can be customized to match the surrounding masonry. It can also be textured to create a non-slip effect.

To use the ground patch, first clean the area to be patched with a wire brush or power washer. Next, mix the material according to the manufacturer’s instructions. Once this is mixed, apply it to the prepared area and smooth it off with a trowel.

Allow it to dry for the recommended time before walking on it or applying weight. The paste can be easily used to restore small cracks and chips in hard tile. As well as applied to level uneven surfaces.

Method Five: Seal Concrete Floors

Another option is to use a concrete floor sealer. This type of coating will help to fill in holes and fissures in the ground, and it can also provide a protective barrier against future damage.

To apply it, simply spread it over the surface using a paintbrush or roller. Be sure to read the instructions on the product label before applying the finish, as some products may require multiple coats.

Once the sealer has been applied, wait until it has dried completely before walking on the area. As long as you maintain it properly and keep it sealed, your solid foundation ground is likely to last a long time.

Method Six: Level the Floor

One of the best ways to fix a cracked basement floor is using a leveler. First, you will need to clean off any loose particles or dirt from the surface of the tile. Next, it is necessary to wet the external area with a hose or a power washer.

When the substrate is wet, make certain to apply an equalizer as the supplier instructed. As soon as you have applied the filler, you must wait a certain amount of time. After it has dried, you will then be able to paint or stain the material as desired.

These are just a few of the different methods that you can use to improve your floor. With proper care and maintenance, your foundation should last for many years to come.

What are Some Common Causes of Crumbling Concrete?

What Are Some Common Causes of Crumbling Concrete

We come across concrete structures that are in various states of ruin every day. Seeing cement crumble is not uncommon, and there can be several reasons for it. The first step is to identify the specific source of the issue in order to determine the best way to address it.

Here are some of the most common reasons. If you are experiencing any of these dilemmas, you may be able to resolve the issue without having to install a new floor.

1. Poorly Compacted Fill Material:

Crumbling concrete is often the result of poor compaction of fill substance. When packing the material, be sure to achieve a minimum density of 95%. This can be accomplished by using a vibrating plate compactor. Improperly compacted soil in the structure can lead to voids in the finished surface, which can cause the cement to loosen. 

In addition, the improper application can also lead to fractures in the drywall as it dries and cures. These fractures let the water soak into the ground, which can freeze and expand, causing additional damage. As a consequence, it is essential to carefully compact fill in order to help prevent crumbling.

2. Improper Curing of the Concrete:

A number of negative side effects are related to an inadvertently incorrect curing of concrete, including cracking, chipping and scaling. The process involves maintaining moisture and temperature conditions that allow the cement to harden properly and gain strength. 

If the curing procedure is not monitored carefully, it can become too brittle or too hot, causing the hydration system to slow down or stop entirely. The result could be a weakening of the substance, making it more susceptible to breaking. In addition, improper curing can lead to the formation of voids within materials that eventually lead to crumbling.

3. Use of De-icing Salts

In the winter, de-icing salts are used on roads and sidewalks to prevent accidents by melting ice. However, these chemicals can also result in deterioration to concrete. When salt comes into contact with masonry, it begins to break down the components that make up the structure. 

As a matter of fact, it becomes more porous and brittle and eventually begins to crumble. In addition, the salt can also corrode metal reinforcements, leading to even more destruction. While deicing salts are essential for safety in the winter, it is best to use them sparingly to avoid costly repairs.

4. Freeze-Thaw Cycles

Freeze-thaw cycles can cause crumbling concrete for a few reasons. First, when moisture turns to ice, it expands. This expansion can put stress on floors, causing fractures. Once the cracks form, they provide an entry point for liquids. 

When the water seeps into the gaps and then gets frozen again, the expansion-contraction process repeats, prompting the holes to grow larger. Over time, this might lead to the foundation crumbling. In addition, freezing and thawing cycles can also make the aggregate in construction materials break down. 

This is because the aggregate is not as strong as the cement that binds it together. When exposed to repeated freezing and thawing, the aggregate begins to break apart, which weakens the product overall and leads to further crumbling.

The above are just some of the common sources of falling construction. So be careful and be prepared at all times. Perhaps you will avoid having to replace your concrete floor.


It’s time to check some most frequent questions that people ask so often. This may help you to understand the situation in a better way and find a solution to your own problem.

1. Can I Resurface Existing Old Concrete?

The answer is a resounding yes. Resurfacing is a process through which worn, or old concrete can be given a new lease on life. The method involves using a specialized mixture to fill in cracks and holes and then applying a fresh coating of cement over the top.

This new layer can be textured and colored to resemble natural stone, brick, or even wood. As a result, it is an excellent way to add both beauty and value to your property. If you have an old brick patio or sidewalk that is in need of foundation repair, don’t hesitate to contact a professional about resurfacing. It’s an affordable and effective solution to bring new life to your outdoor space.

2. Is Concrete Overlay a Suitable Solution?

Concrete overlay is a popular home improvement project because it is relatively inexpensive and can be done quickly. However, there are some drawbacks to consider before deciding whether or not to go ahead with an extra layer.

One downside is that masonry can crack after some time, especially if it is not applied properly. Cracks can allow water to seep in and create an issue to the underlying structure.

In addition, overlays can sometimes chip or flake, creating an uneven surface. If you are considering an insulating coating, feel free to discuss the pros and cons with a professional contractor to ensure that it is the right choice for your home.

3. What Is the Maximum Thickness of a Concrete Overlay?

A contractor needs to consider the thickness of the concrete overlay. A too-thin coating can crack and crumble under heavy traffic, while a dense finish can be difficult to apply evenly. The typical acceptable thickness for many contractors is between ¼ to 2 inches. 

This range allows for a sturdy cover that can withstand moderate wear and tear. In some cases, a solid top layer may be necessary, such as when restoring heavily corroded walls.

4. Can I Level the Floor With Sand And Cement?

Mixing cement and sand together to create a floor screed is a common building process. The ratio of aggregate to admixture used is typically 1:3 or 1:4.5, which provides the appropriate consistency for adding the mixture to a plaster unit or slab.

The sand helps to fill any voids in the mixture and provides stability, while the mix binds the soil and creates a smooth, level base. Once the screed has been combined with the water, it can be poured onto the top and spread evenly using a trowel. After it has had time to set, the surface can then be finished with a sealant or other desired material.


Now that you know how to fix crumbling concrete basement floor, it’s time to take action and get the job done. Don’t wait until the problem gets worse. Repairing your home now will save you money in the long run and give you peace of mind. Always remember to implement precautions to avoid these hazards.

We hope this article was helpful. We’ve outlined a number of common causes of damage in the buildings that we live in and offer ways to fix them. We’ve also answered some frequently asked questions about fixing concrete foundations.

So don’t wait any longer. Get started on improving the floor in your home today.

How to Fix Crumbling Concrete Basement Floor | 6 DIY Methods

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