Locate the exact squeaky spot by walking on the floor and marking the noise
Check for loose floorboards, subfloor movement, or gaps between joists and flooring
Tighten any accessible screws or nails in the affected area
Drive finish screws through the floor into the joist to secure loose boards
Use a stud finder to locate joists before fastening
Add construction adhesive between the subfloor and joist if accessible from below
Insert shims into gaps between joists and subfloor if movement is causing the squeak
Sprinkle powdered graphite or talcum powder into small gaps between boards
Use a squeak repair kit for hardwood floors
Replace damaged nails with screws for a stronger hold
Refasten loose subfloor sections from below if you have basement or crawlspace access
Install blocking or bridging between joists if the floor flexes excessively
Replace severely damaged boards or subfloor sections
Test the repaired area by walking on it again and repeat if needed