How to Fix Squeaky Hardwood Floors (and When You Can't DIY)

Hardwood squeaks because something's rubbing - usually a board against another board, or a board against a subfloor nail that's lost grip. Here's how the fixes work.

Why floors squeak

• Subfloor nails lose grip as wood dries and contracts over years. The board lifts a fraction and rubs the nail when stepped on.
• Boards rub each other when humidity drops and they shrink, leaving micro-gaps that compress under foot traffic.
• Subfloor squeaks itself - common with original 1950s plywood that's starting to age.
• Joist movement in raised foundations, especially if a joist has rotated or settled.

The pro fix from above (most common)

We use specialty screws designed to break off below the floor surface. The threads grab the joist below; the head snaps off below the wood. Result: a tight, screw-secured board with no visible patch.

The process:

1. Locate the squeak with foot pressure (or a stud finder for the joists below).
2. Drill pilot through the hardwood into the joist.
3. Drive the specialty screw until it snaps at the engineered break-point.
4. Fill the tiny hole with matching wood filler.

Done from the finished side, no ceiling damage. Takes 5 – 15 minutes per squeak.

DIY options that often work

• Talc or graphite in the seams. Sprinkle, work in with a soft brush. Reduces wood-on-wood squeaks. Temporary fix - comes back in months but easy to redo.
• Squeak-fixing screw kits from a hardware store. The same idea as the pro fix, with a jig to control depth. Works on most floors but takes practice.
• From below in a raised foundation. If the floor sits over a crawl space, you can drive screws from below into the underside of the squeaking board. Easier than the from-above fix.

When DIY doesn't work

• Squeaks across multiple rooms or floors. Likely a structural issue (joist deflection, framing settlement). Get a pro to diagnose before treating symptoms.
• Squeaks paired with bouncy spots. Subfloor delamination or joist failure. Don't fix the squeak; fix the structure first.
• Squeaks with visible cupping or gapping. Underlying moisture issue. Find the moisture cause before fixing the squeak.
• Engineered hardwood squeaks. Often glue failure on glue-down installs, or click-lock joint failure. Specialty repair, not a screw fix.

When the squeak is normal

Some seasonal squeak is normal in any wood floor. If your floor squeaks lightly in the dry season but settles in winter, you're experiencing normal humidity cycling. A whole-house humidifier set to 35 – 50% reduces it dramatically.

If you have persistent squeaks you can't fix, reach out - most of our squeak-fix calls are 1 – 2 hours total, and the floor goes silent for years.