Identify Squeak Source

What happens in this clip

The first step is to identify the exact location of the floor squeak. This is done by having a helper walk over the suspected squeaky area on the floor above while you observe and feel for movement in the subfloor from underneath (e.g., in a basement or crawl space). The video explains that squeaks occur when the subfloor plywood moves up and down against loose nails in the joists. Look for visual cues like spiderwebs or dust moving, or place your fingers in the corner where the subfloor meets the joist to feel for slight vertical movement. If the subfloor is moving while the joist remains stationary, you've found the source of the squeak.

Goal: Locate the precise areas where the subfloor is loose and causing squeaks.

About the full video

This DIY project details how to eliminate annoying floor squeaks by working from the underside of the subfloor (typically a basement or crawl space). The method involves identifying areas where the subfloor moves against the floor joists, then securing those areas by installing 2x4 blocks with construction adhesive and screws, effectively sandwiching the subfloor to the joist and preventing movement.

Step 1 of 6: Locate Squeak Source

The first and most crucial step in repairing squeaky hardwood stairs is to accurately identify the source of the noise. This often involves subtle movements and vibrations in the stair components. By carefully walking each step, paying close attention to where the sound originates, you can narrow down the possibilities. Sometimes, having another person walk the stairs can help you focus on the specific step or area that is moving and producing the squeak. This process might require repeating the walk a few times, perhaps with slight variations in weight distribution, to be absolutely certain of the location.

Open this step in the guide

Every video in How to Fix Squeaky Hardwood Stairs from Above

1. Step 1: Locate Squeak Source

   • 0:00–1:23 Identify Squeak Source (this video)
   • 2:46–5:26 Identify Squeak Points and Mark Drilling Guides
   • 0:44–1:08 Identify Squeak and Gather Materials for PVA Method

2. Step 2: Access from Above

   • 0:14–0:34 Fix Squeaks from Underneath with Shims
   • 0:03–1:05 Identify and Prepare Problem Area
   • 0:56–1:24 Apply Screws or Blocks for Stability

3. Step 3: Secure Loose Tread/Riser

   • 6:29–7:31 Drive Screws to Secure Tread to Riser
   • 6:13–6:27 Secure Front Treads with Screws
   • 2:05–4:08 Reinforce Risers and Treads with Adhesive and Timber

4. Step 4: Address Loose Stringers

   • 0:09–0:13 Secure Lower Stringer Section
   • 0:56–1:24 Apply Screws or Blocks for Stability
   • 1:24–2:44 Fix Squeaks on Carpeted Stairs

5. Step 5: Test for Squeaks

   • 4:28–5:00 Test the Repaired Stairs
   • 0:46–0:52 Fix Squeaks on Hardwood Stairs with Screws and Putty
   • 11:15–11:37 Final Inspection

6. Step 6: Conceal Screw Heads (Optional)

   • 1:12–1:17 Conceal Screw Holes
   • 0:22–0:30 Fill Screw Holes with Wood Putty
   • 4:26–4:39 Conceal Screw Heads