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The Home Depot

Top Causes of Uneven Flooring

Pro Referral > Home Guides > Flooring > Top Causes of Uneven Flooring
Top Causes of Uneven Flooring

Flooring isn’t cheap, so when you install new flooring, you usually want it to last and stay beautiful for a long time. If your floor develops flaws, it can cause frustration and anxiety as you walk over the faulty floor every day.


Because your floors should be smooth for easy walking, Uneven flooring can cause tripping and falling, so it’s important to make sure that your floors are safe. Once you know the top causes of uneven flooring, you can make sure that your own floors are safe for family and friends.

  1. 1.Support Issues

    As your house settles, the plot of ground that holds your house may not be able to effectively support the weight of the house.

    Your house has a system of columns that support the entire weight of your house. Between these support columns, stretch floor joists that support your floors. If too much space spans between the columns, the floor joists won’t have proper support and they will sag. With sagging floor joists, it’s only a matter of time between your floors are sagging noticeably. Look around your interior rooms for telltale signs of support issues between columns – if you see gaps at the point where walls and floors meet or if your floors squeak, you can guess why your floors are sagging.

  2. 2.Foundation Settling

    Over time, it’s common for all houses to do some settling – especially when a house becomes older. As your house settles, the plot of ground that holds your house may not be able to effectively support the weight of the house. Significant foundation issues will ensue if your house settles too much. Common symptoms of foundation problems include squeaky floors, uneven floors, cracks in the drywall of your interior rooms and cracks in the bricks or foundation of the exterior of your house.

  3. 3.Moisture Problems

    Moisture and dampness that exists in an ongoing fashion will eventually cause structural damage to your house. As moisture covers surfaces in your basement or crawlspace, mold will develop. Not only will this mold cause health issues, but it will also cause structural damage to wood support structures of your house. As the wood grows soft, it may decay and sag, which will prevent it from supporting your house effectively.

  5. 4.Floor Repair Guidelines

    Before proceeding with any repair work, determine why your floors are uneven. This may require an expert inspection, examining the areas of your basement and crawlspace, looking for evidence of foundation, support or moisture issues.


    After the expert determines what your issues are, the repair process may be extensive. It could involve raising your home’s foundation, repairing the problems or issues and then replacing your home back down upon the foundation again. Obviously, this isn’t a job for a novice. If the correct support techniques aren’t used or the house is lifted too fast from the foundation, major issues would ensue.


    Just remember, as unsightly as uneven floors are, they are even more of a safety hazard if people trip over the bumps and ridges of your floor.

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