The short answer
What Causes the Creaks
When floodwater soaks into wood, the fibers swell and then shrink as they dry. This cycle can loosen nails, screws, and adhesive bonds that once held the floor flat. The result is a floorboard that shifts slightly under your weight, producing a creak with each step.
The subfloor, often plywood or OSB, can also absorb water and lose its rigidity. If the joists underneath got wet, they may cup or twist. Any of these changes can create gaps and friction points, which are the source of the noise.
Why Creaking Is a Warning Sign
Creaking is not just an annoyance. It indicates that the floor structure has been altered by moisture. If left alone, the movement can worsen, and the floor may become uneven or even unsafe to walk on. The longer water sits in the wood, the more damage it can do.
You should act quickly to dry the area and assess the damage. Use fans, dehumidifiers, and open windows if weather allows. But drying alone may not fix the problem, because the wood has already changed shape.
- Check for visible gaps between floorboards
- Look for cupping or warping in individual boards
- Press down on different spots to feel for movement
- Listen for the noise in the same areas each time
- Feel for dampness or softness in the subfloor
What You Can Do Right Now
Start by removing any standing water and wet rugs or furniture. Open windows and run fans to promote airflow. If you have a dehumidifier, use it to pull moisture from the air and the wood. Keep the space as dry as possible to slow further damage.
Do not try to force boards back into place or sand them down. That can make the problem worse. Instead, document the affected areas with photos and notes. This information can help you explain the situation to your insurance company if you file a claim.
When to Call the Pros
If the creaking is widespread, the floor feels soft, or you notice mold or a musty smell, it is time to call in local water damage pros. They have the tools to measure moisture levels and determine whether the subfloor is salvageable. They can also identify hidden damage that you might miss.
The pros will usually need to remove the damaged flooring to inspect the subfloor and joists. In many cases, the affected boards and underlayment must be replaced. They will also check for mold growth, which can develop quickly after a flood.
- Soft or spongy spots in the floor
- Widespread creaking across many boards
- Visible mold or a strong musty odor
- Water that has soaked into the subfloor or joists
- Cracks or splits in the wood that are getting wider
What the Repair Work Involves
Repair typically starts with removing the damaged flooring material, whether it is hardwood, laminate, or tile. Then the pros dry and treat the subfloor, and replace any sections that are too damaged to reuse. New flooring is installed and secured to the structure.
The cost depends on the extent of the damage, the type of flooring, and how much of the subfloor needs replacement. It can range from a few hundred to several thousand dollars. Policies vary, and your insurer decides what is covered. Check your policy and talk to your insurance company about what your plan includes.
Water damage does not wait
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (480) 898-4279Frequently asked questions
Will the creaking go away as the floor dries?
Sometimes the noise lessens as the wood dries out, but often the damage is permanent. The wood may have shrunk and twisted, leaving gaps that will always move. If the creaking persists after a week or two, you likely need repairs.
Can I fix a creaky floor myself?
You can try tightening loose screws or adding shims from below if you have access. But if the subfloor is water-damaged, those fixes may not hold. A pro can assess whether the structure is sound and recommend the right repair.
How long does the floor need to dry before repair?
Drying can take days or even weeks, depending on how much water was absorbed and the humidity in your home. The pros use moisture meters to know when the wood is dry enough to work with. Rushing can trap moisture and cause more problems.