Pier and Polyurethane Foundation Repair
Not all problems can be fixed with one solution. It’s important to fully understand and diagnose the problem so that the correct solution can be applied. For instance, is the structure settling on the interior only? Or is the exterior settling as well? Is there a plumbing leak that needs to be addressed first? These are the important questions we answer in our initial analysis. We take pride in offering comprehensive services to fit any structural problem.
- Cracked, or crumbling in foundations or within the interior or exterior of structure
-Sloping, sagging or buckling of foundation floors or walls that can be felt or seen from the interior
-Standing water around the structure from poor drainage
-Improperly Fitting Doors and Windows
- Sanitary Plumbing Leaks
-Trees & Tree Roots
Polyurethane Foundation Repair Process
Polyurethane is best utilized to lift and stabilize the interior slab-on-grade as opposed to the exterior grade beam. The interior slab is typically 4-6” thick, requiring a wider area of support to generate the lift needed. Pressed pier can only provide a small foot print under structural beams, often times neglecting lift and support to the slab spanning between the structural beams. The polyurethane foundation repair process begins with drilling a 5/8” hole through the foundation for access. The high density polyurethane material will enter the ground with low pressure in a liquid state. The two-part polymer will mix together, expand, and fill any air voids that currently exist under the foundation. Once the soil compresses to the point of refusal, the foundation will then begin to lift from the expansion of the high density polyurethane. The foundation will be lifted utilizing a controlled injection method that will be monitored by a Zip-Level, allowing our technicians to know when the correct amount of lift is achieved within 1/10 of an inch. Most polyurethane foundation repairs take one day to complete the scope of work.
Pressed Pier Foundation Repair
The weight load of a house is designed to rest primarily on the exterior grade beam, around the perimeter of the foundation. Weight loads spanning across the house also have grade beams supporting interior load bearing walls. If the settlement of the house is found to be in the area of these load bearing exterior and interior grade beams, then traditional pressed piers are most likely the correct solution. With the resistance of the structures weight, pressed piers are designed to reach depths where little soil movement can be found. The pier installation process begins by digging a shallow excavation at each pier location to access the grade beam. Piers are typically spaced every 8’ in residential applications and every 6’ in multiple story or commercial applications. 6” solid concrete cylinders will then be pressed to depth until a point of refusal is reached. In south Texas, depths of 15’-20’ are typically reached. At this point the structure will then begin to lift to the desired elevation. Each pier location will then be covered up, compacted, and placed back to its original condition. In locations with concrete prohibiting access, such as porches or driveways, break-outs will need to be cut away so that the exterior grade beam can be accessed. Aftermath Structural Repair will then pour the break-out concrete back to its original elevation once the work is complete. Typical residential pier work can be completed in 2-5 days.
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