Symptoms
- A small metal point sticking up through the floor
- Snags on socks or bare feet
- Slight squeak at the same spot
- Usually just one or a few isolated spots
Likely causes
- CommonWood shrinkage loosening the nail's grip over timeAs boards dry and shrink slightly, nails that once sat flush can work upward.
- CommonSubfloor flexing under foot trafficRepeated flex at a weak spot gradually pushes a nail up.
- PossibleOriginal nail not driven deep enoughA shallow nail from installation is more prone to popping up later.
- PossibleHumidity swings over many seasonsRepeated expansion and contraction cycles can work a nail loose gradually.
What to do
- Place a cloth or thin piece of wood over the popped nail head to protect the floor finish.
- Tap the nail back down flush with a hammer, checking it doesn't crack the surrounding wood.
- If it won't stay down or keeps popping back up, use a nail set to drive it slightly below the surface instead.
- Fill the resulting small hole with a color-matched wood filler.
- For a nail that's bent or won't drive straight, remove it with pliers and replace with a flooring staple or trim-head screw driven into the same or an adjacent spot.
- Sand the filled area lightly once dry and touch up with matching stain or finish if needed.
- Check nearby boards for similar loose nails, since one popped nail sometimes signals a few more nearby.
Tools and parts
- Hammer
- Nail set
- Pliers
Wood floor fillerSearch: “hardwood floor color matched wood filler”
When to call a pro
Call a flooring contractor if nail pops are widespread across the floor, which can indicate a broader subfloor issue.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.