Is Mudjacking The Greatest Repair For Sunken Concrete?

January 8, 2023 by No Comments

Concrete is probably the most versatile constructing materials accounting for the lion’s share of sq. footage within the skies and on the bottom for building initiatives.

Nevertheless, regardless of developments in building and engineering, there’s at the moment no indestructible concrete. If in case you have concrete slabs lining your patio, driveway, or pavement, you may come throughout sunken spots every now and then.

On this article, you study mud jacking and all out there options. Historically, sunken slabs needed to be lifted and changed, however with mudjacking, you may have a stage walkway by the tip of the day.

Learn on if mud jacking is the magic repair to your building venture.

What’s Mudjacking?

Mudjacking, also called slab jacking, injects a concrete slurry of sand, cement, water, and infrequently soil by way of two-inch holes drilled into concrete slabs to revive them to their unique place. It was invented in Iowa however rapidly gained recognition as an inexpensive various in concrete slab restore.

Mudjacking works by an infiltration mechanism the place injected slurry gathers in holes and gaps inside and beneath the concrete slab, consequently accumulating strain that leads to an upward displacement of the sunken slab.

Due to the character of the slurry, the holes required for mud jacking present an avenue for growing weaknesses within the slab. Moreover, with out skilled assist, you may exacerbate the state of affairs whereas trying a easy DIY repair.

Mudjacking Steps

Mudjacking may look like a easy course of upfront, however that is solely typically the case. A collection of steps must be adopted to the latter for wonderful outcomes. A number of different steps is likely to be wanted relying on the extent of the harm incurred on the concrete slabs, whereas others could also be excluded.

Nevertheless, listed below are the important thing steps for each mud-jacking restore try:

1. Drill Holes

The concrete slurry is delivered to the slabs by way of pressurized holes that measure something from one to 2.5 inches in diameter. Earlier than you may go about reworking your completely intact concrete slab into a short lived sieve, there are a number of stipulations to verify off. A very powerful ones are highlighted beneath.

Assess the Extent of the Harm

Mudjacking presents a easy answer to sunken concrete slabs and is essentially thought of a dependable and semi-permanent restore. Nevertheless, in case your concrete slabs are damaged or have developed faults inside their construction, then mud jacking will do little in the direction of restoring their unique state. Verify for cracks and faults earlier than deciding whether or not to proceed with mud jacking.

Decide the Reason behind the Sunken Slabs

There are a selection of the reason why your pavement could also be sinking into the bottom. Completely different causes require completely different approaches in relation to repairing. The most important issues in slab sinking embody:

Adjustments in Soil Moisture Content material

Soil, like some other type of matter, has a hard and fast quantity. In tandem with seasonal adjustments, soil tends to swell with a rise in moisture, as in winter or after a torrential downpour. When the water rescinds, the soil shrinks, leading to a drop in your concrete slab stage.

Underlying Roots

Bushes are just like icebergs as a result of they’ve far more happening beneath floor stage than what meets the attention. Regardless of the slim risk {that a} mammoth ship will sink in your driveway, expansive root programs beneath concrete slabs may outcome within the uplifting or corresponding sinking of concrete slabs. Additionally, roots soak up water, altering soil construction and producing results as described above.


Concrete is just not waterproof, neither is the soil on which it sits. Poor drainage beneath your concrete slabs may lead to an alteration in soil construction and moisture content material ensuing within the sinking of your completely aligned concrete slabs.

Proceed to Drill the Holes Appropriately

As soon as you already know the character and extent of the harm and potential causes, you might be properly in your technique to starting the mud-jacking restore course of. Drilling holes to ship the concrete slurry is probably the most essential step throughout mud jacking. Concrete is sturdy, however it will also be brittle.

  • Drill a number of holes two toes aside and two inches in diameter
  • Take care to house the holes evenly
  • Guarantee your complete floor of the slab has evenly spaced holes

You may need heard of the phrase “measure twice, lower as soon as.” For mud-jacking, drilling holes is the measuring side of the method. Acceptable drilling leads to wonderful lifting.

2. Raise with Slurry

The subsequent step within the mud-jacking course of is pumping the concrete slurry beneath the slabs. The slurry may range in composition, however the strongest variants are normally comprised of the next:

  • Portland cement
  • Water
  • Soil
  • Limestone mixture

Lifting with slurry relies on hydraulic strain generated by the setting slurry. The concrete slurry is injected by way of the beforehand drilled holes with warning taken on the quantity delivered to every gap. Relying on how a lot carry is required, educated professionals pump various slurry to make sure the slab stays stage as soon as the carry is full.

Slurry pumped beneath the slab settles between the areas left by displaced soil or increasing roots filling them out. As soon as the void is stuffed, extra slurry generates a major hydraulic power for lifting the concrete slab.

3. Apply Ending Touches

As soon as the concrete slab is lifted, there are nonetheless a couple of extra steps to navigate. These two-inch holes you drilled into the slab current a pathway by which weeds might sprout, taking away all that arduous work you place in in the direction of beautifying your driveway. To dot your Is and cross your Ts, you need to fill the holes and caulk any seen cracks.

Caulking the cracks not solely ensures that your restore is just not an eyesore but additionally prevents future erosion by brokers resembling wind and water which will widen the cracks growing strains of weaknesses. As soon as you might be happy with the result of the mud-jacking course of, you need to chorus from loading the concrete slabs with vital weight for a couple of hours (the candy spot is at 24 hours).

Whilst you wait, it’s a good suggestion to take care of any spilled slurry whereas moist to keep away from having to chisel away any extra concrete. Sadly, these out-of-place vivid spots left behind by the drilled holes is not going to fade because the day ends. You may have to cowl up the driveway with

Mudjacking is a time-efficient course of, and regardless of having vital harm incurred on the slabs, you need to have a superbly stage driveway, pavement, walkway, or porch, by the tip of the day. Equally, when dealt with by professionals, your complete course of is never labor-intensive.

When You Ought to Think about Mudjacking

Mudjacking is a handy technique to repair your concrete slab issues, however sadly, it isn’t an efficient band-aid for all concrete issues. Relying on the extent of harm incurred on the concrete slabs, the reason for the sinking, your private preferences and finances, and the permanency desired for the restore, mud jacking might or might not be the answer.

Mudjacking might come in useful when you find yourself:

  • In search of an economical various to fully changing concrete slabs
  • When the concrete to be repaired is heavy and has slab piers
  • When you must carry the slabs in your driveway, porch, walkway, patio, or pavement
  • Pool repairs
  • Potholes

Mudjacking Prices

Mudjacking is on the decrease finish of the dimensions when finishing up repairs on concrete slabs. With options resembling full concrete alternative and polyurethane foam injections, mud-jacking presents aggressive set up prices with out sacrificing high quality.

Mud jacking prices go in the direction of shopping for supplies and hiring injection tools. You could pay for a small service if you happen to rent professionals. It’s at all times advisable to hunt the companies of knowledgeable for good outcomes.

On common, mud jacking prices normally vary from $3 to $6 per cubic foot, relying on the extent of the harm. This interprets to about $1300 for repairs on a mid-sized porch, patio, or driveway. Nevertheless, in case of minimal repairs, prices could also be as little as $300. For an correct citation, you need to contact a educated skilled.


Mudjacking is certainly one of some ways to take care of dents in your pavements or sunken concrete slabs. If mud jacking doesn’t sit proper with you, you will have a number of options to type that eyesore of a driveway. The perfect options to mud-jacking are polyurethane foam injections and concrete alternative, which have sure stipulations to realize earlier than being thought of.

Different options embody:

  • Self-leveling
  • Sandjacking
  • Materials slab jacking

Polyurethane Foam Injections

Polyurethane foam injection is a lower above mud jacking. Each mud jacking and polyurethane foam injection depend on hydraulic strain to carry sunken concrete slabs. The largest distinction lies within the chemical composition of the slurry. Because the identify suggests, the latter makes use of polyurethane foam as a substitute of concrete slurry.

How Does Polyurethane Foam Work?

Polyurethane foam has a number of benefits over mud-jacking. The froth materials is injected in a liquid state, however in lower than quarter-hour, the froth solidifies and fills the house beneath the concrete slabs. Because it solidifies, polyurethane foam expands, offering ample power to carry the concrete slab and completely align with the remainder of the slabs on the repaired floor.

The froth is injected by way of holes lower than an inch in diameter, considerably narrower than in mud-jacking. Consequently, you will have much less to fret about when filling up the holes or trying to cover these ugly and conspicuous spots left by the drilled holes.  

Concrete Slab Alternative

Concrete slab alternative refers back to the full alternative of the concrete slabs. That is an costly endeavor and is barely thought of in a worst-case situation. As dangerous because it sounds, typically there are cheaper methods to handle dilapidated concrete slabs. So, what are the symptoms for concrete alternative?

Huge Cracks and Gaping Holes

As talked about earlier, concrete alternative is barely possible when the extent of harm to the concrete slabs is irreversible. When the concrete has seen cracks that span the size of the higher floor, then it’s extremely doubtless that the slab is damaged into at the very least two items. In such a case, trying to carry the slab will lead to an unlevel floor which isn’t solely an eyesore but additionally presents a visit hazard that may lead to unprecedented journeys to the emergency room or lawsuits.

Weak spot in Underlying Soil

Often, concrete might sink due to an alteration within the underlying soil construction. That is very true for foundational concrete slabs. When the harm is intensive, additional weight from mud-jacking or polyurethane foam injections will solely exacerbate the state of affairs. Eradicating the affected concrete slabs means that you can compact the soil or apply stabilizing components. This creates the perfect circumstance for concrete alternative.

How is Concrete Alternative Performed?

Concrete alternative follows a collection of extremely regulated steps, particularly when load-bearing tools is concerned. Nevertheless, with the correct instruments and experience, concrete alternative not often takes various hours. The steps concerned embody:

  • Figuring out and proscribing the realm to be repaired
  • Sawing the concrete slabs alongside the perimeters of the outlined space
  • Extraction of broken concrete slabs
  • Making ready the patch space and offering a load switch
  • Changing the concrete slabs
  • Sealing and insulating the concrete slab joints

Mudjacking vs Polyurethane

There’s numerous debate on whether or not polyurethane foam injection is healthier than mud-jacking. Most specialists agree that polyurethane upgrades conventional mudjacking, however how do they evaluate?

Similarities Between Mudjacking and Polyurethane Foam Lifting

Each of those strategies are extremely efficient when lifting sunken concrete slabs. In a nutshell, mud jacking and polyurethane foam lifting strategies depend on hydraulic strain to fill the void left by the downward displacement of underlying soil or concrete slabs. Each the fabric, whether or not concrete slurry in mud-jacking or polyurethane foam in poly-jacking, is delivered by way of holes drilled into the concrete.

The lifting energy is generated from the buildup of the injected materials in each circumstances.

Variations Between Mudjacking and Polyurethane Foam Lifting

There are a number of distinct variations between mud jacking and polyurethane foam lifting. The largest distinction is notably within the materials injected beneath the concrete slabs. Polyurethane foam is a composite materials made from polyol and isocyanic acid. This sort of foam is way much less sturdy than different varieties of foam however has extra versatile makes use of, together with poly jacking.

Mudjacking, alternatively, will depend on concrete slurry to generate the hydraulic power required to carry concrete. Moreover, concerning the scale of holes required to inject the fabric, polyurethane foam lifting makes use of holes considerably narrower than these utilized in mudjacking.

Polyurethane foam takes roughly fifteen minutes to remedy, in contrast to mud jacking, which requires at the very least a day earlier than the concrete slabs can comfortably assist the extra weight. By way of weight per cubic foot, mudjacking imposes much more weight than polyurethane foam, making it simpler and extra handy for delicate concrete.

The ultimate vital distinction lies in the price of set up. Mudjacking requires minimal experience and available building materials resembling water and cement, making it comparatively cheaper than polyurethane foam. Nevertheless, polyurethane foam is the cheaper choice, with a life expectancy of five-plus years versus two years for mud jacking.

Which is Higher?

Polyurethane foam lifting is the higher choice as a consequence of its prolonged life expectancy, minimal upkeep prices, and simplified set up. Nevertheless, you shouldn’t write off mudjacking simply but. In case you are on a finances, or just on the lookout for a short lived answer to your concrete downside, then you should still think about mudjacking as an choice.

Polyurethane foam, nevertheless, presents minimal repercussions ought to the restore not go as deliberate. A great instance is that if the bottom beneath the concrete is unstable. You could inadvertently trigger the bottom to sink additional when utilizing mud jacking. Due to the sunshine nature of polyurethane foam, it’s much less prone to exacerbate sinking concrete slabs.

Continuously Requested Questions

Let’s check out some frequent questions concerning mudjacking:

  • Mudjacking is just not a everlasting repair. Nevertheless, relying on how properly you perform upkeep, it could possibly preserve your concrete pavement or driveway stage for between 2 and 5 years.

  • Mudjacking Is a minimally invasive process used to boost and stage sunken concrete and may carry weights starting from 600 kilos to 1400 kilos per sq. foot of concrete. Nevertheless, relying on the extent of harm and high quality of the concrete, these values may deviate on both facet.

  • If the concrete slab is just not broken, it’s less expensive to mud jack it than to finish a concrete alternative. Mudjacking requires much less labor, materials, and time making it the cheaper choice. Nevertheless, concrete slab alternative is likely to be the one viable choice in case of opposed concrete harm.

  • Ultimate Ideas

    Mudjacking, regardless of being thought of a conventional model of slab jacking, stays an efficient technique to repair unlevel concrete slabs by way of hydraulic lifting immediately. It’s minimally intrusive and fewer prone to produce mismatched slabs, as in concrete slab alternative.

    Nevertheless, you probably have a couple of additional bucks to spare, then you might be higher off going for polyurethane foam lifting as it’s extra sturdy and cost-efficient in the long term.

    Leave a Comment