Pressure Grouting or Mud jacking in Charlotte, NC also known as slab jacking, refer to a procedure used when a residential or commercial concrete slab or foundation sinks. This sinking is typically caused by improper foundation installation due to poor soil compaction, moisture variations resulting in expansive soils due to high clay or sand content or potentially sub-surface erosion due to water. A slab can be “floated” or pressure grouted to its original elevation by pumping in a mixture of cement, sand, and other adhesives under the slab using pressure grouting equipment. This is only one procedure that can be used as a slab foundation repair method. How does mudjacking work? Strategically drilled holes are made in the slab and with the use of flexible hoses and portable pumps and these holes are filled with this grout mixture. The process can be accomplished in a few hours by lifting the foundation or slab using these pressure grouting techniques.
Mud jacking is used to raise patios, garage floors, driveways, basement floors, walkways, pool decks and porches. It can remove fill voids, pooling water and trip hazards. As an alternative to replacement of uneven or sunken concrete, slab jacking can restore sunken areas to their original level. The procedure can be done on cracked areas such as in concrete paved floors and surfaces, side walks and steps and driveways. It can not only bring the surface to grade but it can eliminate water problems as it fills in cavities under the concrete and it will divert the water away from the foundation.
Pressure grouting under slab produces very little inconvenience or mess and allows for immediate use. There is no waste with this process, unlike concrete slab replacement which adds to landfill making this method environmentally a better choice. Quite often there is no noise from breaking up old concrete to remove it, no dust and no chunks of concrete. The color of the concrete remains the same as the old areas are still in place.
As with any major structural problems with residential or commercial buildings one should always try and determine the reason for the distress in order to fix it properly. This is where a professional foundation repair consultant should be called in. By thoroughly inspecting the structure; windows, mortar joints, drywall, cracks in brick veneer, molding gaps and trim boards alignment (to name just a few) the consultant can readily identify and provide recommendations based on years of experience. If the weather in Charlotte, NC has been unusually wet or dry it can cause problems in the way the soil behaves. If there is a large problem to repair such as in the shifting of a commercial or residential building, helical piers can be used to lift the foundation to stabilize it. Helical piers use mechanical jacks to lift a settled beam so that it is at grade level. This must be done very carefully so as not to cause any other damage. It is held in place by a spread pier and footing. This footing or pier is set well below the problematic area, deep into the soil so as not to be affected by moisture variations in the soil. It distributes the load evenly without any additional mass and is tied with steel supporting the foundation beam.
Regardless of the methods used, it should be understood that the solution is not a DIY project and you should consult a professional foundation repair consultant in Charlotte as pressure grouting is beyond the scope of a diy project.
For more information on Pressure Grouting and Grouting costs call Michael at (704) 787-6972 or visit Masserang Contracting & Consulting at http://specialtyfoundationrepair.com
Masserang Contracting & Consulting
1700 Songwood Rd.
Concord, NC 28025
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