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Unlike homes with basements or crawl spaces, a slab floor is solid concrete with no structural wood flooring system. For homes with this type of floor, soft soil or bad compaction is almost always the culprit. Once the soil is compromised, the slab will shift, and this creates the sagging or sinking effect. Pressure from that shift will sometimes crack the slab itself, causing high and low places in the flooring. To fix this type of damage, you need concrete slab repairs.
Water is a probable suspect, as it seeps into the ground around your foundation. The sill plate, wood beams, and floor joists are all vulnerable to this; these wooden components on top of your foundation are the wood framing system that supports your floor. Because it has direct contact with the concrete and can be over the exposed soil line, it often falls victim to water intrusion. Once water intrudes and saturates the wood, this leads to deterioration. It’s this deterioration that causes the floor system to fail.

But you don’t have to have standing water under your house to cause structural decay. High humidity can also damage the beams and joists that hold up your subfloor. Wood is highly porous and readily absorbs water from the air. Over time, this water saturation softens and rots the boards. As they decay, they compress under the weight of your home, lowering your floor sometimes by several inches.

Lack of building codes- or outdated ones- are another concern. A main support beam, the post that spans the length of your home, should be sized proportionately and supported every few feet. In many homes, the beams may not be the correct size or the support posts are installed too far apart. This over-spanning puts greater stress on the beam and makes it more likely to sag and potentially even fail.
Along the same lines, if your home is more than 50 years old, it’s also possible that inadequate materials are to blame. When a home is built, sometimes the beams or joists are not the correct dimensions. When this happens, a contractor will install a shim; a shim is a thin piece that adds a minimal lift to ‘even out’ the installation. Many times in construction, that shim was usually another piece of wood; at Acculevel we use steel shims to prevent compression or rot. These shims also allow us to increase the overall surface of the bearing load, so that the beam it’s supporting is not crushed by the weight of your home.
Technology is another age-related factor. New solutions and materials are always in development, but they take time to become commonplace. Before the 1970s, pretreated or pressure-treated lumber was not widely available or regularly used by builders. Lumber installed in its original ‘raw’ form is more vulnerable to insects and water damage.
New trends in home design can have a negative effect if a remodel doesn’t take the weight of the raw materials into account. Many older homes aren’t built to carry the load of solid granite countertops or stone-tiled floors and walls. Recreational items like a pool table or hot tub will also add significant weight to your floor system. These are all items that can put additional stress onto an already failing wood structure.
Contact Acculevel! We provide free estimates on sagging floor repairs.
Completed a significant foundation stabilization project for Matt in zip code 46074. This involved addressing settling issues by installing stabilization equipment, ensuring long-term structure integrity. The focus was on reinforcing the foundation to prevent future problems, with the project cost around $13,500.
Near Westfield, IN
Addressed structural concerns for Lesli in 46074, focusing on a moving wall issue indicating potential foundation sinking. Reinforcement work was essential to restore stability, with an estimated cost of around $19,400.
Near Westfield, IN
Performed a structural assessment of interior walls that were showing signs of movement and potential foundation sinking. The issues seem to be located at the front of the home, where foundational instability is causing visible shifts in the walls. Estimated cost for addressing this problem is approximately $19,000. This detailed evaluation aims to stabilize the home and prevent further damage.
Near Westfield, IN
We recently completed a structure repair for Laura's detached garage in 46074. The garage was sinking on one side, which required strategic stabilization efforts. The project demanded careful attention to the foundation to prevent further sinking and ensure long-term durability. We estimate the cost to be slightly over $11,000. Laura can now enjoy a safe and stable structure.
Near Westfield, IN
Addressed a series of cracks on the front patio of a home, identified during a building inspection. Our team efficiently filled and repaired the affected areas to enhance stability and aesthetics. This crucial repair work was carried out at a cost of around $6,915.
Near Westfield, IN
We tackled a small water intrusion problem in Robyn's basement, located in the 46062 area. A previously repaired crack was trickling water, so we applied waterproofing solutions to secure the corner and prevent future leaks. This project, estimated around $3,600, ensures a dry and reliable basement environment.
Near Westfield, IN
For Walter's home in the 46074 area, we tackled a crack in the concrete slab under the carpet, addressing some water damage in the process. We ensured proper drainage to redirect water away from the foundation, providing a stable and dry environment. This essential repair work came in at an approximate cost of $3,000.
Near Westfield, IN
Completed a slabjacking project for Shpat’s porch in zip code 46074. The work involved lifting and leveling the existing concrete porch to correct prior sinking issues. This job helps ensure a stable and even surface, improving both safety and appearance. The project was efficiently handled for an approximate cost of $2,700.
Near Westfield, IN
Addressed a footer problem causing settling in the front area of Ben's home in zip code 46074. The project involved stabilizing the foundation to prevent further shifting and ensure the safety and stability of the structure. This essential repair was carried out for approximately $9,800.
Near Westfield, IN


