Skip to main content

Trim Excess Shim for a Flush Finish — Shim Gaps

Beginner4 hours

Part of project

Squeaky Stair Repair · Step 4 of 7

Helpful?

In this video

Once the glue has set sufficiently to hold the shim in place, use a flush-cut saw (such as a Japanese pull saw) to carefully trim any excess shim material that extends beyond the edges of the tenon joint. This step ensures a clean, smooth, and aesthetically pleasing finish, making the repair virtually unnoticeable.

9.5K views231
Soundproof Guide

193K subscribers

View Channel

FAQs

What are the most common reasons stairs squeak, and how does this project address them?

Stairs typically squeak due to loose treads or risers rubbing against the stair frame, or when fasteners become loose, creating friction and movement. This project directly tackles these issues by tightening connections, shimming gaps to eliminate movement, and applying lubricants to reduce friction at contact points.

What specialized tools or materials will I need beyond standard DIY equipment for this project?

While basic screwdrivers and pliers are essential, you'll also need a nail set to recess nails, a framing hammer for precise adjustments, and a utility knife for trimming shims. Specific materials include wood shims, scrap wood blocks for support, angle brackets for reinforcement, and #10 3-inch wood screws.

How difficult is this project for a beginner, and what's the estimated time commitment?

This project is considered beginner-friendly as it primarily involves diagnosis and simple mechanical fixes. The estimated 4-hour timeframe is generally achievable, but locating the precise source of the squeak can sometimes be the most time-consuming part of the process.

What should I do if I can't access the underside of my stairs to secure components?

If the underside is inaccessible, focus on top-side solutions. You can drive screws through the top of treads into risers or stringers, or use shims and adhesive between loose components from above. Specialized anti-squeak kits, which often involve small screws or plugs inserted from the top, are also available.