How to Lift a Partial Concrete Patio Slab

Lifting a partial concrete patio slab can be a daunting task, requiring proper planning and execution. Whether you want to fix unevenness, address drainage issues, or create space for new installations such as plumbing or electrical work, it’s important to approach this project with caution. The process involves a combination of specialized equipment, diligent preparation, and careful execution to ensure the safety of both yourself and the patio structure.

Is It Possible to Lift a Concrete Slab?

Many people wonder if it’s possible to lift a concrete slab without causing any damage or further problems. The answer is yes, it’s possible. However, it requires precision and the use of advanced techniques. Fracturing and overlifting of slabs can occur if not done correctly.

One alternative to excavation and added weight is injecting structural polyurethane foam into the voids beneath settling or rocking concrete slabs. This method can stabilize the slabs without the need for extensive digging or adding additional weight to the structure. The foam is injected into the voids, expanding and filling the empty spaces, effectively lifting the slabs back to their original position.

Precision Lift products are often used for this purpose. These products are specially designed to provide accurate and controlled lifting of concrete slabs. They’re injected beneath the slabs, and their expansion properties allow for precise lifting without causing any unnecessary stress or damage to the slabs or surrounding structures.

The process of lifting a concrete slab using Precision Lift products begins with a thorough assessment of the slab and it’s underlying issues. This includes identifying any voids or areas of settling that need to be addressed. Once the assessment is complete, the polyurethane foam is injected into the voids using specialized equipment and techniques.

The lifting process is carefully monitored to ensure that the slab is lifted evenly and to the desired height. This precision is crucial in avoiding any further damage or problems.

Benefits of Using Structural Polyurethane Foam for Lifting Concrete Slabs

  • Enhanced strength and stability
  • Reduced labor and equipment requirements
  • Cost-effective alternative to traditional slab lifting methods
  • Minimal disruption to surrounding areas
  • Durable and long-lasting solution
  • Improved load-bearing capacity
  • Environmentally friendly material
  • Quick and efficient installation process
  • Resistant to moisture and chemicals
  • Compatible with various soil types

However, there’s a solution for solid slabs of concrete that have settled or become uneven. Through a process called slab raising or concrete lifting, these slabs can be raised and stabilized, saving you the cost and hassle of replacing them. This method isn’t suitable for gravel areas or blacktop surfaces, as they’d require complete replacement. Additionally, severely cracked concrete slabs may be too damaged to be successfully lifted and may need to be replaced as well.

Can a Concrete Slab Be Raised?

Solid slabs of concrete can indeed be raised and stabilized successfully. However, it’s important to note that not all types of surfaces can be repaired in the same way. For instance, gravel areas or blacktop are unfortunately unable to be repaired and usually require total replacement or re-installation to address any settling issues they may have encountered. These types of surfaces don’t lend themselves well to lifting or stabilization techniques.

This process involves injecting a specialized expanding foam or hydraulic pump under the concrete slab, which effectively raises and levels the surface. By filling any voids beneath the slab, the foam or hydraulic material ensures that the concrete regains it’s original position and remains stable over time.

It’s important to keep in mind that there are limitations to this method. Severely damaged slabs with extensive cracking or structural issues might be too compromised to be effectively lifted. In such cases, complete replacement may be necessary to ensure long-term durability and functionality. It’s advised to consult with professionals who specialize in concrete lifting and stabilization to evaluate the extent of the damage and determine the best course of action.

This approach offers a cost-effective and efficient solution to address settlement issues, ensuring that the concrete surface remains even, stable, and safe for use.

Signs That Indicate a Concrete Slab Needs to Be Raised

  • Uneven or sloping floors
  • Cracks in the walls or ceilings
  • Doors and windows that stick or don’t close properly
  • Floors that feel soft or bouncy
  • Pools of water or standing water near the foundation
  • Sunken or sunken areas in the concrete
  • Visible gaps between the slab and adjacent surfaces
  • Nails or screws protruding from the floor
  • Excessive wear on carpets or flooring materials
  • Signs of termite or pest infestation

Removing a partial concrete slab can be a challenging task, but there are alternative methods that can make the process easier. Instead of resorting to digging, one effective technique involves using a pry bar to create a void. By strategically leveraging the cracks created by a sledgehammer, the pry bar can be used to lift smaller sections of the slab. This lifting angle creates a void beneath the slab, eliminating the need for extensive digging.

How Do You Remove a Partial Concrete Slab?

This method is especially useful if youre working in a tight space or if the concrete slab is too thick for you to dig under. By creating a void, you can easily break up the rest of the slab without too much effort. Simply position the pry bar under the lifted section and apply pressure to lift it further. Be sure to wear gloves and safety goggles to protect yourself from any flying debris.

Another method to remove a partial concrete slab is to use a jackhammer. A jackhammer is a powerful tool that can break up concrete with ease. However, this method may be more suitable for larger concrete slabs or if you’ve access to a jackhammer. Start by using the jackhammer to create cracks in the slab, then use it to break it up into smaller, manageable pieces. Be sure to follow safety protocols when operating a jackhammer, such as wearing ear protection and using proper lifting techniques.

This method requires some physical strength and may take longer than using a jackhammer, but it can still be effective. Be prepared for a workout, as breaking up a concrete slab can be a physically demanding task.

If the concrete slab isn’t too thick or too large, you may be able to remove it by using a concrete saw. A concrete saw is a specialized tool that can cut through concrete with precision. Start by marking the outline of the section you want to remove, then carefully cut along the marked lines with the concrete saw. Once the section is cut, you can easily remove it by breaking it up into smaller pieces with a sledgehammer or disposing of it as a whole. Always follow safety precautions when operating a concrete saw, such as wearing protective eyewear and keeping the area clear of debris.

Regardless of the method you choose, it’s important to exercise caution and wear appropriate safety gear when removing a concrete slab. Concrete can be heavy and unpredictable when breaking up, so take your time and work in a controlled manner. If you’re unsure about any aspect of the process, it’s always best to consult with a professional. With the right tools and techniques, you can successfully remove a partial concrete slab and prepare the area for any future construction or landscaping projects.

Alternatives to Removing a Concrete Slab, Such as Resurfacing or Repurposing It

There are several options to consider instead of removing a concrete slab, such as resurfacing or repurposing it. By resurfacing the slab, you can apply a new layer of concrete or a decorative coating to give it a fresh look. This allows you to improve it’s appearance without the expense and effort of demolition. In addition, you can repurpose the slab by transforming it into a different structure, like a patio or a raised garden bed. This way, you can maximize it’s use rather than getting rid of it entirely. Exploring these alternatives can help you save time, money, and resources while still achieving your desired outcome.

Source: How to Break Up Concrete – Budget Dumpster

However, removing a portion of a concrete patio can be a labor-intensive task no matter the method used. It’s important to proceed with caution and take appropriate safety measures when attempting to remove a concrete patio.

Can You Remove Part of a Concrete Patio?

However, if the patio is larger and the concrete is reinforced with rebar, removing it becomes a more challenging task. In this case, using a demolition hammer or saw with a diamond blade is necessary to cut through the rebar and break up the concrete. It’s important to note that this method requires precision and caution to avoid damaging any surrounding structures or utilities.

Before attempting to remove a concrete patio, it’s crucial to assess the situation and determine if it can be done safely without professional help. If the patio is close to the house or other structures, there may be underlying utilities or foundation elements that need to be considered. Hiring a professional contractor with experience in concrete removal is highly recommended in these instances.

Once the concrete is broken into smaller pieces, it can be shovel away and disposed of properly. It’s important to adhere to local regulations regarding waste disposal and recycling. Concrete is a heavy material, so it may require multiple trips to a recycling center or landfill.

After removing the concrete patio, there may be an empty space in it’s place. This space can be filled in with soil and grass seed to create a new lawn area, or it can be used for other landscaping purposes. It’s a good idea to consult with a landscape designer or contractor to determine the best use for the newly created space.

Slab jacking, also known as concrete raising, offers a practical solution for re-leveling concrete slabs without the need for costly and time-consuming replacement. This technique focuses on raising one side of the slab from below, eliminating the need to break or discard the existing concrete. Let’s explore the benefits and process of slab jacking in more detail.

Can You Raise a Concrete Slab?

Slab jacking, also known as concrete raising or slab leveling, offers a cost-effective and efficient solution for uneven or sunken concrete slabs. This process eliminates the need for breaking, discarding, or replacing the concrete, making it an attractive option for homeowners or businesses looking to restore the stability and functionality of their surfaces.

The procedure of slab jacking involves injecting a specialized grout mixture or high-density polyurethane foam underneath the sunken concrete. This material fills the voids and lifts the slab, effectively re-leveling it without major disruptions or extensive labor. By addressing the underlying issue causing the settlement, slab jacking provides a long-lasting solution that saves time, money, and resources.

Furthermore, slab jacking offers a quick turnaround time, allowing you to resume normal activities soon after the procedure is completed. Unlike the lengthy process involved in replacing a concrete slab, slab jacking typically takes only a few hours to complete. This minimal disruption to your daily routine is particularly beneficial for businesses or high-traffic areas where downtime needs to be minimized.

This non-destructive method eliminates the need for extensive replacements, allowing you to restore the functionality of your surfaces quickly and with minimal disruption. Whether it’s a residential driveway or a commercial parking lot, slab jacking offers a sustainable and reliable way to address concrete settlement issues.


It’s important to assess the condition of the slab, identify any underlying issues, and choose the most suitable method for lifting, whether it be using a hydraulic jack, foam, or mudjacking. Additionally, proper safety precautions should be followed to prevent any injuries during the lifting process.

Scroll to Top