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CFI with level on foundation in West Virginia

Sagging Floors

Since your home relies on its foundation for structural support, any damage to the foundation is going to cause problems for walls and floors. One such symptom of foundation damage is sagging floors. Here’s what you need to know.

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Sagging floors usually occur in homes with a crawl space foundation. When excess moisture enters your crawl space, it causes floor joists (which support your home’s floors) to break down over time. Eventually, your floors will sag and may even separate from floorboards. Don’t worry, Basement Authority of West Virginia has the tools to fix the problem and prevent it from happening in the future. 

What Causes Sagging Floors?

As mentioned, sagging floors are the result of excess moisture in your crawl space. However, construction errors can also contribute to sagging floors. Here, we’ll outline the major reasons this problem sign occurs.

Wood Rot

Most crawl spaces include wooden support beams which provide structure and support for your home. When excess moisture makes its way into the crawl space, it causes humidity to rise. Generally, an increase in humidity also leads to condensation to form on surfaces within the crawl space. As water droplets form on the wooden support beams, they slowly eat away at the organic material. Eventually, wood rot (a type of fungus) forms and causes these beams to break down. Since the weakened beams can no longer provide adequate support for your floors, sagging sections appear. 

Over Spanned Floor Joists

Floor joists are horizontal beams located directly under your floor. Ideally, these beams will be spaced pretty close together in order to provide the most amount of support. Spacing between joists is known as the “span”. When floor joists are “over spanned,” it means there is too much space between them, and they won’t offer adequate support for your floor. Most often, this occurs due to an error during the construction of your crawl space. If your floor feels bouncy, or it is sagging in certain places, over-spanned floor joists could be to blame.

Badly Spaced Support Columns

Similar to over-spanned floor joists, this issue has to do with the improper spacing of support beams in your crawl space. Support beams also play an important role in keeping your floor supported. If a contractor has spaced these beams too far apart, it can put a ton of stress on other structures in your crawl space and cause your floor to sag. Additionally, support beams can be weakened by external factors such as uneven settlement or wood rot. Anything that affects your crawl space support beams will likely cause sagging floors.


Handy homeowners might look at a sagging floor as a challenge. Unfortunately, the process of fixing a sagging floor is a hard task without professional help. Sistering floor joists, replacing rotted wood, or attempting to bolster support beams with DIY solutions is never advised, as any misstep during the process can end up causing even more damage. No one wants to waste time and money trying to fix a problem. For that reason, contacting the experts at Foundation Systems of West Virginia provides you with a guaranteed solution to your sagging floor. 

You might wonder if a sagging floor is actually a big deal. Well, the answer is yes. Sagging floors indicate a larger foundation problem. If left unchecked, foundation damage can lead to more than just a sagging floor. Your home may experience wall cracks (both indoor and outdoor), nail pops, stuck doors and windows, or a tilting chimney. All of these put extra strain on your home – lowering its value and safety. Don’t ignore sagging floors. Hire a professional to inspect your home so you can confirm if other issues are arising too.

Moisture has a few different options for getting below your home. One option is through open crawl space vents, which allow humid air to easily penetrate the area and cause condensation to form. Another way is through groundwater. After a heavy storm, rain seeps into the soil and may travel below the crawl space. Over time, the water evaporates and gets trapped below your home. Once again, humidity rises. Lastly, plumbing is often held in your crawl space. When a leak occurs, it spills water into the area below your home and can wreak havoc on floor joists and support beams.

Call Basement Authority of West Virginia for a Free Inspection

Charleston, Huntington, Morgantown, and other areas of West Virginia have their fair share of muggy days, especially during the summer. While these conditions can put a strain on your floor, you can stop the problem in its tracks. Our solutions provide a permanent solution to your sagging floor and other foundation problem signs. Contact us to learn more about foundation repair and to schedule a free inspection with one of our specialists. We’ll come to your home and complete an in-depth look at what is causing your foundation issues. After that, we will provide a solution tailored to your specific needs. Don’t let your sagging floor get worse, give us a call today!

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Clarksburg, WV

1807 West Pike Street Ste C
Clarksburg, WV 26301