Floor squeaks
A squeaky floor is usually the subfloor rubbing against joists as it flexes underweight. Fix from above (through the flooring) with specialty screws, or from below (basement/crawlspace) with shims. Both approaches DIY-doable.
Quick answer
If floor is carpeted: use a Squeeeeek No More kit — insert the depth gauge to find joists, then drive specialty screws through the carpet into the joist. Screw head breaks off flush with subfloor. If subfloor is accessible from below (basement or crawlspace): shim between joist and subfloor where it's squeaking, secure with construction adhesive. For hardwood floors, options are limited — the squeaks may need professional attention.
Key facts
| Difficulty | Easy |
|---|---|
| Time | 30 min–2 hrs |
| Parts cost | $10–$40 |
| Tools needed | Squeeeeek No More kit (for carpet), pry bar, hammer, shims, construction adhesive |
| Parts needed | Squeeeeek No More screws ($20–$30) or shims + adhesive |
What's happening
Floor squeaks come from friction between the subfloor and the floor joists. Over years, nails loosen, wood shrinks, and floors flex as people walk on them. The rubbing between separated wood pieces creates the squeak.
The fix strategy depends on flooring type: carpet is easiest (drive through), unfinished basement below is easy (fix from below), and hardwood/laminate is trickiest (limited access).
Common causes (ranked by frequency)
- Subfloor separated from joist 60% of cases
Original nails loosened, subfloor lifts and drops slightly when walked on. Screw or shim to secure.
- Loose subfloor seams 20% of cases
Two subfloor panels rubbing against each other at a joint. Squeak on the seam line.
- Joist twist or shrinkage 10% of cases
Joists have shrunk or twisted, changing the fit against the subfloor. More complex fix.
- Bridging (blocking) loose 5% of cases
The cross-bracing between joists has loosened. Bracing rubs together when floor flexes.
- Structural issue 5% of cases
Damaged joist or over-spanned structure. Requires professional attention.
How to diagnose
Step 1 — locate the squeak. Walk slowly across the floor. When you find the squeak, walk back and forth in a small area. Have someone press down at the squeak location.
Step 2 — determine access. Is there a basement, crawlspace, or garage below? If yes, fix from below is usually easier.
Step 3 — for below access, have a helper walk the squeak while you observe from below. You'll see the subfloor flexing or moving away from the joist at the squeak point.
Step 4 — for above-only access, use a Squeeeeek No More kit's depth gauge to find the joist location. Screws go through the carpet directly into the joist.
The fixes
Fix from above (carpet) IF CARPETED
Tools
- Squeeeeek No More kit
- Cordless drill or driver
Parts
- Kit ($20–$30) — includes screws, depth gauge, gripping tool
- Have a helper walk the squeak to identify exact location.
- Insert the depth gauge sleeve into the carpet at the squeak location.
- Move it around to find the joist — you'll feel the screw hit solid wood.
- Once located, drive the specialty screw through the carpet, subfloor, and into the joist.
- The screw head is designed to break off flush — twist the driver back and forth once it's fully seated, and the head snaps off just below the subfloor level.
- The remaining screw pulls subfloor tightly to joist, eliminating the squeak.
- Repeat as needed for larger squeaky areas.
Fix from below (basement/crawlspace) IF ACCESSIBLE BELOW
Tools
- Hammer
- Flashlight
- Utility knife (for shims)
Parts
- Wood shims
- Construction adhesive (Liquid Nails or similar)
- Locate the squeak from above by having a helper walk it, then match the location from below.
- Apply construction adhesive to one side of a shim.
- Slide the shim between the subfloor and the joist at the squeak location — tight but not so hard that it lifts the subfloor.
- Tap gently with a hammer to seat.
- Apply more adhesive to secure.
- For extensive squeaks along a joist, use multiple shims.
Screw subfloor to joist (better long-term) MOST DURABLE
Tools
- Cordless drill
- Long screwdriver bit
Parts
- 3-inch deck screws
- From below, identify the joist and the squeak location.
- Drive 3-inch deck screws through the joist up into the subfloor — angled slightly so they don't go all the way through the flooring.
- Space every 4–6 inches along the squeak location.
- Combined with adhesive shims, creates a solid mechanical bond.
Prevention
New floor prevention:
- Use subfloor adhesive during new construction — glue between joist and subfloor prevents squeaks from developing.
- Use screws, not nails, for subfloor — deck screws every 6-8 inches.
- Address any water damage to subfloor promptly — softened subfloor eventually squeaks.
- Consider a floor squeak repair kit as part of any subfloor work — cheap insurance.
When to call a pro
- Suddenly appearing severe squeaks (may indicate structural damage)
- Squeaks accompanied by floor sagging or soft spots
- Widespread squeaks throughout the house (possibly joist issues)
- Hardwood floor with no access from below (may require refinishing to properly access)
- You suspect subfloor water damage
Contractor cost: $150–$400 for spot squeak repair. Larger issues: $500–$2,000 depending on scope.
Cost estimate
Frequently asked questions
Usually not — most squeaks are just cosmetic annoyance. But if squeaks appear suddenly, worsen quickly, or accompany sagging/soft spots, there may be a structural issue. When in doubt, hire an inspection.
Limited options. Squeeeeek No More has a hardwood version but the screw hole is visible. Fixing from below (if accessible) is invisible. If neither works and squeaks are severe, refinishing during flooring work may be needed.
Yes — extensively used by pros and homeowners. Works well for carpeted floors specifically. Requires locating joists correctly (the kit includes tools for this). Reviews are largely positive when used correctly.
Poor installation is often the cause — inadequate subfloor prep, wrong fasteners, or missed joist locations. If new floors squeak within the first year, contact the installer under warranty.