How to Fix Squeaky Floors: 6 Methods From Above and Below

Knowing how to fix squeaky floors can bring peace and quiet back to your home. Squeaks happen when floorboards rub against nails, subfloor or each other. Seasonal humidity and age make the problem worse. Fortunately, most squeaks are simple to silence with basic tools.

Why Floors Squeak

A wood floor sits on joists with a subfloor between them. Over time, the subfloor can pull away from the joists. Boards can also shrink and loosen. When you step on a loose spot, parts rub together and make noise.

Find the Source of the Squeak

Walk slowly across the room. Mark each noisy spot with painter’s tape. If you can reach the underside of the floor from a basement or crawl space, have a helper walk above while you listen below. You can often see the gap between the joist and subfloor.

How to Fix Squeaky Floors From Below

Working from below is the best option when you have access.

Method 1: Add Wood Shims

If you see a gap between the subfloor and joist, tap a thin wood shim into the space. Add a dab of wood glue first. Do not force it, because too much pressure can lift the floor.

Method 2: Screw the Subfloor to the Joist

Drive a screw up through the joist into the subfloor. Choose a length that does not poke through the finished floor. Use a short piece of wood across the gap to pull things tight.

Method 3: Add Blocking

For squeaks between joists, install a short piece of lumber between them. Press it snugly under the subfloor and fasten it.

How to Fix Squeaky Floors From Above

If you cannot reach the underside, repair the floor from the top.

Method 4: Use a Squeak-Fix Kit

A kit includes special screws that snap off below the surface. Find a joist with a stud finder, then drive the screw through the floor and carpet. Snap the head off. This method hides the repair.

Method 5: Drive Trim Screws

On hardwood, drill a pilot hole at an angle and drive a finish screw through the board into the joist. Countersink it. Fill the hole with matching wood filler. Match the color with a touch of stain.

Method 6: Lubricate With Powder

If two boards rub, sprinkle talcum powder or powdered graphite between them. Sweep it into the cracks. This quick trick is temporary, but it often works for months.

Tools You May Need

• Stud finder
• Drill with bits
• Screws and finish nails
• Wood shims and wood glue
• Hammer
• Wood filler

Prevent Future Squeaks

• Keep indoor humidity steady. See our guide on how to reduce humidity in your house
• Fix water leaks promptly
• Avoid dragging heavy furniture
• Inspect floors during your yearly home maintenance checklist

The U.S. Department of Agriculture shares research on wood and forest products on its official website.

When to Call a Professional

Call a contractor if the floor sags, feels spongy or squeaks everywhere. Those signs may point to structural problems.

Final Thoughts

Now you know how to fix squeaky floors from above or below. Find the noisy spots, secure loose boards and control humidity. A little effort brings quiet back to your home.