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Fixing a Squeaky Wood Floor from Below

To tighten a loose subfloor board, place glue on the tip of a shim and hammer it between the subfloor and joist until tight. To tighten a series boards, drive a 2x4 against the subfloor using a prop. Nail 2x4 to the joist. Repeat on opposite side.

To tighten loose boards, use 1-1/4" inch roundhead screws. Use washers and drill pilot holes.


To tighten bridging, hammer in new, larger nails. If still squeaking add steel bridges.
To add steel bridging, push new bridging tight against subfloor, and nail to bottom.
Sutherlands® provides these project tips and guides as a service to our visitors. Due to possible variance in conditions, equipment, materials and individual skill levels, Sutherlands® assumes no responsibility for losses or injuries incurred during maintenance or repair of your property. Sutherlands® assumes no liability for errors or omissions in the Resources section of this website. Please read and follow any safety precautions provided by tool and equipment manufacturers, and consult a building professional in your area if you have any questions about a repair project. Always check your local codes before building, and obtain the required building permits.