The short answer
Moisture Is the Main Cause
Wood is a natural material that reacts to water. When hardwood planks take on moisture, they swell. If there is no room for that expansion, the boards push upward and buckle. This often happens after a leak, a flood, or even a slow drip from an appliance or pipe.
High humidity in the air can also add moisture to the wood over time. In a dry climate, a sudden spike in humidity or a water event can be a shock to the flooring. Keep an eye on the humidity level in your home, especially after heavy rain or if you use a humidifier.
- Spills left to soak into the wood
- Leaks from a dishwasher, refrigerator, or sink
- Flooding from a burst pipe or heavy rain
- Poor ventilation under the floor
- No expansion gap left around the edges
- Excess moisture from cleaning with too much water
Check for Leaks First
Before you assume the buckling is just from humidity, look for a water source. Check under sinks, around toilets, and behind appliances. A small leak can go unnoticed for weeks and cause serious damage to your floors. If you find a leak, turn off the water supply to that area if you can.
If you live in Mesa, keep your shutoff valve location written down so you can act quickly in an emergency. Even if you cannot find a leak, the buckling may be from a past spill or a slow seep from the foundation. A water damage inspection can help pinpoint the source.
What You Can Do Right Now
Start by drying the area. Use towels to soak up any standing water, and run fans or a dehumidifier to lower the moisture in the room. Remove any rugs or furniture that might trap moisture. Open windows if the outdoor air is drier than the indoor air.
Do not try to force the boards back down with weights or nails. That can crack the wood or hide a bigger problem. If the buckling is minor and the wood dries out, it may flatten on its own. But if the boards are cupped, cracked, or showing gaps, the damage may be permanent.
When to Call the Pros
If the buckling is widespread or the wood is warped, drying alone may not fix it. The pros can assess the extent of the damage and determine whether the floor can be repaired or needs replacement. They have the tools to remove water-damaged sections and dry the subfloor properly.
Attempting a DIY fix on a large area can lead to mold growth or further structural issues. Local water damage pros can also check for hidden moisture behind walls or under the floor. Their work usually involves removing the affected boards, drying the area, and installing new planks to match.
- Buckling over a large area of the room
- Boards that are cupped or cracked
- Signs of mold or a musty smell
- The floor feels soft or spongy underfoot
- You cannot find the source of the moisture
- The buckling returns after drying
Prevent Future Buckling
Once the floor is repaired, take steps to keep it dry. Wipe up spills immediately and avoid using excessive water when cleaning. Use mats at entryways and in the kitchen to catch drips. Make sure your home's humidity stays within a comfortable range, especially during humid seasons.
If you are installing new hardwood, ask the installer about leaving a proper expansion gap around the edges. That gap allows the wood to move without buckling. Also, consider a water alarm near appliances or under sinks to alert you to leaks early. A little prevention can save you from costly repairs.
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
Can I fix a buckled hardwood floor myself?
Minor buckling may flatten after the wood dries out. You can try drying the area with fans and a dehumidifier. But if the boards are warped or the subfloor is wet, you likely need professional help to avoid mold and structural damage.
Will my insurance cover the repair?
Policies vary, and your insurer decides what is covered. Water damage from a sudden leak may be covered, but gradual damage or flooding is often not. Check your policy details and talk to your insurance company about your specific situation.
How long does a hardwood floor take to dry?
Drying time depends on the amount of water, the wood type, and the humidity in your home. It can take several days to a few weeks for the boards to fully dry. Using fans and a dehumidifier can speed up the process, but do not rush it.