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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Lack of building codes- or outdated ones- are another concern.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.
We tackled a severe issue with a sinking foundation at Lisa's property in Dayton, zip code 45410. The garage floor was notably sinking, causing doors to malfunction and water to pool under the floor. Our team applied slabjacking techniques to elevate and stabilize the affected areas. This essential repair was completed to ensure long-term stability and functionality, with an approximate cost of $15,000.
Near Dayton, OH
We addressed a serious water intrusion issue in Jacquelyn's basement, located in zip code 45419. Our waterproofing efforts aim to prevent future water-related damage, ensuring the basement remains dry and secure. This service was completed at an approximate cost of $5,500.
Near Dayton, OH
Our latest project at Wagner's residence in Dayton involved addressing moisture issues in the basement of this century-old home. We focused on implementing effective waterproofing solutions to combat the persistent moisture problems. The estimated cost for this important service is around $6,700, aiming to ensure long-lasting protection.
Near Dayton, OH
We focused on addressing water intrusion in Marlyn's crawl space, sparked by a pest inspector's findings of water presence and musty smells. The inspection revealed potential moisture entry points. Handling this issue is crucial for preventing structural damage and ensuring a safe environment. The estimated cost for this waterproofing job is around $12,800.
Near Dayton, OH
We tackled significant window well concrete cracks at Christopher's property in the 45429 area. The existing cracks allowed outside visibility, posing potential structural concerns. Our team focused on repairing these issues to enhance stability and maintain the home's integrity. This crucial repair is approximately priced around $9,730.
Near Dayton, OH
Recently, we focused on a vital structural repair at Alison's home located in zip code 45402. The project involved replacing a compromised beam in the basement and stabilizing a section of the first-floor bumpout that was detaching from the main structure. Key highlights included using support beams and instituting foundational reinforcements to ensure long-term stability. This work, completed for roughly $13,000, has significantly enhanced the home's durability.
Near Dayton, OH
Our team has addressed critical foundation issues at the First Dayton Free Will Baptist Church, focusing on repairing cracks and leaning walls. We've reinforced the structure from both the external and internal walls, ensuring stability and long-term security. The project, with an approximate cost of $55,000, aims to maintain the integrity of the church in Dayton.
Near Dayton, OH
Recently completed a project involving foundation crack repair at Vicki's property in the 45429 area. The job focused on addressing visible cracks in the crawlspace area and ensuring structural stability of the exterior brickwork. The project's total came to an approximate cost of $10,800. The client's primary concern was resolved efficiently, ensuring long-term durability.
Near Dayton, OH
We've undertaken the task of stabilizing a settling slab foundation in Russell's 31-year-old home located in the 45432 area. The job involved addressing the separation and cracking in the brick and mortar due to the slab foundation's settling over a 25 ft area. We are exploring the installation of piers to ensure long-term stability, with the project coming in at around $13,000.
Near Dayton, OH


