The short answer
What Causes Crowning
Crowning occurs when the center of a hardwood plank swells more than its edges. Wood absorbs moisture unevenly, and the middle of the board tends to take in water faster. This makes the plank curve upward, like a shallow hill.
Moisture can come from several sources. A slow pipe leak under the subfloor is a common culprit. Spills that sit on the surface for a long time, high indoor humidity, or a washing machine overflow can also trigger it. Even a damp basement below the floor can push moisture upward.
How to Spot Crowning Early
Check your floor for planks that feel raised in the middle. Run your hand across the surface; a crown will feel like a gentle bump. You might also notice gaps at the edges of the boards or a slight rocking when you walk over the area.
Look for other signs of moisture nearby. Discoloration, a musty smell, or peeling finish near the crowned area can point to a hidden leak. If you see these, act quickly to find the source.
- Feel for a raised center on each plank
- Look for gaps between boards
- Check for staining or dark spots
- Sniff for a musty odor
- Watch for cupping on the edges of the room
What to Do Right Away
First, stop the moisture source if you can. If a pipe is leaking, shut off the water supply to that area. If a spill caused it, dry the floor with towels and use a fan to circulate air. The faster you remove the moisture, the better the chance the boards will recover.
You can also use a dehumidifier to lower indoor humidity, especially if the air feels damp. Avoid sanding or refinishing a crowned floor yourself, as that can damage the wood further. The boards may shrink back as they dry, but sometimes they stay warped.
When to Call the Pros
If the crowning covers a large area or the floor feels soft, it might be beyond simple drying. A hidden leak under the subfloor can keep feeding moisture into the wood. The pros can find the source and dry the structure properly.
Professional drying equipment can pull moisture from deep within the wood and subfloor. If the boards are too damaged, they may need to be replaced. A water damage inspection can tell you how far the moisture has spread and what repairs are needed.
Preventing Future Crowning
Keep your hardwood floor dry by wiping up spills immediately. Use mats at entryways to catch tracked-in water. Maintain indoor humidity between 35 and 55 percent, especially during wet seasons.
Check under sinks, around appliances, and near exterior walls for leaks regularly. If you live in Layton, keep your shutoff valve location written down so you can act fast. Catching a small leak early can save your floor from crowning.
- Wipe spills right away
- Use entry mats
- Monitor indoor humidity
- Inspect plumbing areas monthly
- Know where your shutoff valve is
Talk to someone now
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (801) 383-0232Frequently asked questions
Can crowning go away on its own?
Sometimes, if the moisture source is removed and the wood dries evenly, the boards may flatten. But if the wood has swollen permanently, it won't return to normal. Professional drying can help, but replacement may be needed.
Is crowning the same as cupping?
No. Cupping happens when the edges of a board curve upward, forming a U shape. Crowning is the opposite, where the center rises. Both are caused by moisture, but they affect different parts of the plank.
Does insurance cover crowning damage?
Policies vary, and your insurer decides what is covered. Water damage from a sudden leak might be covered, but gradual damage from high humidity often isn't. Check your policy and document the issue with photos.