Uneven floors are rarely caused by problems with the floor itself. The cause is usually settling or shifting of the foundation underneath the floors. If the floor beams and joists are made from wood, like the ones above a crawl space, they will usually bend rather than crack.
In some cases, a slight slope may be normal and not cause for concern. However, if the slope is severe or getting worse over time, it could be a sign of a serious problem that requires immediate attention. One potential risk of sloping floors is damage to the structural integrity of the home.
The first step in fixing uneven floors caused by foundation issues is to address the foundation problem itself. This may involve adding additional support to the foundation or repairing any damage that has occurred. Once the foundation is stabilized, you may need to have the floors leveled by a professional.
Structural or foundation damage is a major cause of uneven floors, and it's usually the most expensive problem to fix.
Uneven floors are most common in old homes because the home's foundation shifts over time. For example, it may take about 15-20 years for a foundation to shift and the floors to become uneven. But there can be other reasons for uneven floors.
Subfloor unevenness cannot be greater than 3/16 of an inch over a 10-foot span or 1/8 inch over a 6-foot span. Subfloors must not slope more than ½ inch per 6 feet (25 mm per 1.8 m) Subfloors must be structurally sound.
The typical costs for repairing sagging floors start at $1000 and can go up to $10,000, with the average rate being around $300 per square foot. But this can vary depending on the extent of the damage and materials needed to get the job done.
When it comes to foundation issues, what you should look for is gaps between planks, growing cracks along exterior walls and space between the siding and window or door frames. These gaps and cracks can also invite in more moisture or pests, which can compound your issues.
Uneven floor surfaces, such as broken and cracked sidewalks, unlevel floors and carpets and rugs that do not stay in place are the source of many fall incidents. According to Robson Forensics, snow rain, ice, and obstructions contribute to slip-and-fall accidents as well.
Many homes older than 15 years tend to experience some sort of foundation issue or settlement. Slab, basement, and crawl space foundations are all at risk of settlement, which can cause your floors to warp, bend, and become uneven.
Instead, hiring a flooring repair contractor may be the better option, especially when it comes to leveling floors in old houses. Homeowners can expect to pay between $2 and $30 per square foot of professional floor leveling, depending on the required approach.
The best flooring for uneven floors due to its attractiveness and durability is epoxy, which can also be designed to mimic a wide variety of appearances. Not only will epoxy finish out the floor, but it'll also even it out.
For homes where this is the case, the subfloors likely need to be replaced. According to Angi and HomeAdvisor, the cost to replace a subfloor ranges from $428 to $2,978, with a national average of $572.
Uneven floors pose a serious risk of slips, trips, stumbles and falls. Our feet instinctively know to expect even and consistent flooring.
What Happens if You Don't Fix Sagging Floors? If you ignore sagging floors, it can lead to consequences such as property damage that your insurance company may not cover. It can also lead to injury when someone trips or falls on uneven floors, or even property loss if the damage is great enough.
Many homeowners and owners of commercial property have dealt with a sagging floor. Floors can sag for many reasons. For instance, they may sag due to the natural settling of your property or building materials over time. However, a sagging floor may also signify damage from water leaks or pests, like termites.
Dangerous flooring conditions include:
Uneven or broken floors, sidewalks, parking lots, and walkways. Bunched up rugs and carpets. Ice and snow on outdoor walkways. Slippery floors due to spilled liquids or water tracked inside, as well as wax or polish.
A good rule of thumb is to stick with two or, at the most, three types of floors for your whole house. For example, you could choose a type of large tile for high-traffic, high-spill areas like the kitchen, foyer and dining room. Then you could use smaller tile in the bathrooms.
Unlike structural installations, floor coverings aren't part of your home's structure. Instead, they're installed on top of your home's existing subfloor to add aesthetic value. They're easier to install and remove than structural installations.
It may make a lot of sense to walk away from foundation issues in a home if the cost of repairing the issues is more than what the seller is willing to compensate by lowering the home's price, or if the scope of damage and repairs is over your budget and time-consuming.
Hairline cracks in concrete floors or flaws in concrete surfaces: Hairline cracks, flaking, and spalling on concrete floors may also be mistaken for signs of foundation problems. However, hairline cracks on concrete floors are expected as the material dries and do not indicate movement or settlement of the foundation.
The foundation issues of having cracks, walls separated, doors sticking, or even walking around the house and feeling the floor is not leveled can be terrible for the house. Unlike an older home, buying a new home will not show foundation issues right away.
Does home insurance cover foundation movement or sagging floors? Foundation damage caused by shifting or settling earth or sagging floors caused by rotting floor joists are typically not covered by homeowners insurance. If the damage is caused by flooding or an earthquake, you'll typically require separate coverage.
For repairing an uneven concrete garage floor, the best product will be a dry powder leveling cement mix designed for indoor and outdoor applications. It is the same product often used to prepare indoor floors for ceramic tile.