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CONCRETE LEVELING

We are the trusted leading experts in concrete leveling in NJ

The cause of uneven unlevel concrete surfaces can vary. Prior to seeking out a solution, a professional assessment to determine cause and establish a correct method of repair is recommended.

While some concrete surfaces are poured intentionally with pitch for proper surface drainage, such as basement floors that are pitched toward a sump pump, along with outdoor surfaces such as patios, the main cause of uneven concrete is typically due to concrete settlement.

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Let’s address the two main causes along with proper repair methods.

Concrete Leveling, Concrete Chiropractor
Concrete Leveling, Concrete Chiropractor

Sinking Concrete

  • Concrete sinks when placed on loose soil during construction, as the soil settles and becomes more compact. This failure is commonly seen with concrete patios, pool decks, garage floors, and inside floor slabs.

    Two common materials are used as a concrete leveling method for sinking concrete. The first and longest process in use is known as mudjacking.

    Holes that are typically 1” in size are drilled into the concrete slab to allow for injection of a cement grout. The grout is a mixture of sand and portland cement. As the grout is injected, the concrete slab will float up, returning to its original height and position. The access holes are then patched, allowing the concrete to be returned into service almost immediately.

    As an alternative to mudjacking or grout leveling, a second process known as foam leveling is used as a concrete lifting process. 5/8″ holes are drilled through the concrete slab. Next, a polyurethane foam is injected. As the poly foam concrete lifting process is used, it will raise the sunken concrete.

    While both processes are being used for concrete leveling work, the poly foam process does come with some pros and cons. Unlike mud jacking, which uses locally sourced, earth-based materials, raising concrete with foam uses petroleum or bio-based products with flammability, toxicity, or recyclability issues.

Uneven or Unlevel Concrete surfaces

  • The first step is determining which self-leveling product is correct for the application. There are two main types of products: underlays and overlays. They are gypsum-based or Portland-based products, and it is necessary to consider floor moisture and wear surfaces when selecting.

    Proper floor preparation is essential. The surface must be solid, sound, and free of bond breakers like glue or paint.

    While floor levelers are an option to level concrete repair, if you are experiencing a settlement issue with your indoor or outdoor concrete, click the Contact Us button below for a cost-effective, professional concrete raising evaluation.