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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Lack of building codes- or outdated ones- are another concern.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 recently worked on Gregg's property, addressing structural issues involving sagging and broken floor joists. This important repair ensures the structural integrity of the space, focusing on replacing damaged supports to prevent further issues. The project, valued at around $6,500, was essential in maintaining the safety and stability of the home.
Near Anderson, IN
We completed a comprehensive job at a commercial building in Anderson, focusing on concrete leveling and sealing. Several sidewalks had settled and required attention to address uneven surfaces, likely caused by excess moisture. This project not only restored the walkways but also enhanced the safety and durability of the property. The project was valued at around $10,600. Gr8 Holdings LLC will benefit from this significant improvement.
Near Anderson, IN
Crystyna's home required urgent attention to address bowing floors and rotten support beams in the crawl space. With over 18 inches of clearance, our team set to work replacing damaged wooden supports and ensuring the new setup was secure. Our aim was to stabilize the flooring and enhance the structural integrity of the space, with a project cost just over $11,000.
Near Anderson, IN
Today, we worked on installing a drainage system to tackle water intrusion issues at a property in the 46012 area. Heavy rainfall was causing water to seep through the baseboards, so our team focused on setting up a reliable drainage solution. This effort will redirect water away from the foundation, ensuring a dry and secure environment for the homeowner. The project was completed at an approximate cost of $8,830.
Near Anderson, IN
Tackled a crawl space encapsulation project in the 46012 area for Dennis. The focus was on reducing moisture and improving air quality by installing a vapor barrier. This approach not only enhances the durability of the foundation but also boosts energy efficiency. The project is valued at around $6,700.
Near Anderson, IN
Addressed a significant foundation issue in Sharon’s home (zip code 46012) due to leaking toilets that led to subfloor damage and compromised structural integrity. The repair involved replacing the subfloor and strengthening the damaged joists caused by wood rot. Approximate cost for this project was $3,478.
Near Anderson, IN
We've conducted a waterproofing project in Edward's basement to address significant water intrusion issues affecting the cinderblock walls. The water was seeping in from 18 inches above ground, causing visible stains and occasionally creating a mildew odor. Most of the damage was concentrated in one corner of the basement. The comprehensive repair ensures a dry and odor-free environment, with work costing around $9,400.
Near Anderson, IN
We tackled a serious water intrusion issue in Kenneth's basement, located in zip code 46013. The main focus was on sealing the seam between the wall and floor, which was leaking. We installed a comprehensive waterproofing system to ensure the space remains dry, priced roughly at $13,000.
Near Anderson, IN
Matt experienced water accumulation in his crawl space after a recent rain, with levels reaching over six inches. As someone with asthma, he needed a thorough waterproofing solution to prevent mold and maintain a healthy environment. Our team implemented various waterproofing measures to ensure the crawl space remains dry, completing this service in the 46017 area with an approximate cost of $10,600.
Near Anderson, IN


