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CONCRETE LEVELING

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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 recommnded.

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 methods of repair.

Sinking Concrete

  • When concrete has been installed on loose soils in and around homes and buildings during initial construction, concrete slabs will sink as these loose soils settle and reconsolidate. This failure is commonly seen with concrete patios, pool decks, garage floors and inside floor slabs.

    A sinking concrete failure can be corrected with a process referred as concrete leveling or Mudjacking. Holes that are typically 1” in size are drilled into the concrete slab to allow for injection of a Portland cement grout. 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.

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 called underlays and overlays. They are gypsum based or Portland based products and it is necessary to consider floor moisture and wear surface when making the selection. Proper floor preparation is extremely important. The surface must be solid and sound and free of any bond breakers such as glues or paints.

    While floor levelers are an option to level concrete surface issues, if you are experiencing a settlement issue with your indoor or out door concrete, click the contact us button below for a professional concrete raising evaluation.