Fix Squeaks Between Subfloor and Joist (Access from Below) — Address Floorboard Creaks
Part of project
How to Reduce Noise from Stairs and Upstairs Floors · Step 2 of 7
In this video
If you have access to the joists from below (e.g., in a basement or crawl space), you can address squeaks originating between the subfloor and the joist. Locate the gap where movement is occurring. Carefully insert a thin wooden shim between the joist and the subfloor. Use a hammer to gently tap the shim until it's snug, but do not over-tighten, as this could cause the subfloor to buckle or crack. Add more shims as needed in the problem area until the squeak is eliminated.
Fix Squeaks Between Subfloor and Joist (Access from Below) — Address Floorboard Creaks
Part of project
How to Reduce Noise from Stairs and Upstairs Floors · Step 2 of 7
In this video
If you have access to the joists from below (e.g., in a basement or crawl space), you can address squeaks originating between the subfloor and the joist. Locate the gap where movement is occurring. Carefully insert a thin wooden shim between the joist and the subfloor. Use a hammer to gently tap the shim until it's snug, but do not over-tighten, as this could cause the subfloor to buckle or crack. Add more shims as needed in the problem area until the squeak is eliminated.