Apply 5-Minute Wood Adhesive
From How to Fix Squeaky Stairs from Underneath with Shims and Glue Blocks · Step 3 of 6 · Video by The DIY Guy

Showing 6:22–6:49 of the source video. Watch the full video with every moment.
What happens in this clip
If you encounter larger gaps (more than a millimeter) between the tread and the riser below it, standard PVA glue might not be sufficient. In such cases, use a 5-minute wood adhesive (like "Lumberjack Wood Adhesive" mentioned in the video). This type of glue hardens quickly and foams up to fill larger voids. Squeeze the adhesive directly into the gap. Once it sets, any excess foam can be easily taken off.
Goal: Fill any larger gaps between the tread and the riser below it.
What's used
Tools
- 5-Minute Wood Adhesive 5 MIN Lumberjack
- Expanding foam adhesive
About the full video
This DIY project provides a step-by-step guide to fix creaky stairs without needing access from underneath. The process involves removing the carpet and underlay, diagnosing the causes of creaks (movement in the tread-riser rebate and gaps between tread and riser), and then securely bonding and screwing these components together using various adhesives and screws. The final steps include reinstalling the underlay and carpet.
Step 3 of 6: Apply Wood Glue
Once you've identified the rubbing points (usually where the tread meets the riser or the stringer), apply a generous amount of wood glue to these surfaces. If you're addressing a gap, apply glue to the edges of the shim material and the surfaces it will contact. This glue will help to bond the parts together and further reduce friction and noise.
Every video in How to Fix Squeaky Stairs from Underneath with Shims and Glue Blocks
Step 1: Locate Squeaky Tread
- 0:14–0:34 Fix Squeaks from Underneath with Shims
- 0:13–0:20 Locate Squeaky Floor Section
- 2:45–5:32 Identify Squeak Causes and Mark Fixings
Step 2: Prepare Shim Material
- 0:14–0:34 Fix Squeaks from Underneath with Shims
- 0:15–0:38 Shim Gaps from Underside
- 3:09–3:51 Tighten Loose Risers with Shims
Step 3: Apply Wood Glue
- 6:40–7:13 Apply Wood Glue (Back Risers)
- 0:22–0:34 Apply Wood Glue
- 6:22–6:49 Apply 5-Minute Wood Adhesive (this video)
Step 4: Insert and Secure Shims
- 4:46–5:44 Attach Support Blocks and Secure Wedges
- 4:08–4:28 Final Gap Filling and Tread Reinforcement
- 3:09–3:51 Tighten Loose Risers with Shims
Step 5: Test for Squeaks
- 4:28–5:00 Test the Repaired Stairs
- 0:14–0:34 Fix Squeaks from Underneath with Shims
- 5:45–6:01 Test the Repaired Stairs
Step 6: Clean Up
- 10:52–11:00 Clean Up Mess
- 13:42–14:26 Clean Glue Squeeze-out
How to Fix Squeaky Stairs from Underneath with Shims and Glue Blocks
This project outlines the steps to fix squeaky stairs from underneath by using shims and glue blocks to secure the treads and risers.
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Planning this project? Shop Oak Valley Designs.

