A squeaky door often sounds more serious than it is. Most squeaks come from metal parts rubbing inside a hinge or from a hinge moving slightly out of alignment. The useful first step is locating the noise rather than spraying every moving part.
Listen to one hinge at a time
Open and close the door slowly while listening near the top, middle, and bottom hinges. Sound can travel through the door, so one hinge may be responsible even when the whole door seems noisy.
Tighten visible screws first
A loose hinge can shift on every swing and create friction. Snug the screws without stripping them. If a screw spins without tightening, the hole itself may be damaged and need repair; lubricant will not fix that.
Lubricate the joint, not the whole door
Apply a small amount of hinge-appropriate lubricant at the hinge pin and work the door back and forth. Silicone lubricant or a product designed for hinges is usually cleaner than soaking the hardware with household oil that attracts dust.
Protect flooring and trim from drips. If lubricant is running down the door, you are probably using too much.
If it still squeaks, clean the pin
With the door properly supported, removable hinge pins can be tapped upward, wiped clean, lightly lubricated, and reinstalled. Remove surface rust and debris before putting the pin back.
Do not remove every hinge pin at once, and get help with a heavy solid-core door. Its weight can injure you or twist the remaining hinges.
When the squeak is really an alignment problem
If the door also rubs the jamb, sags at the latch side, or has visible play at a hinge, lubrication may only quiet it temporarily. Check for bent hinge leaves and screws that repeatedly loosen.
This Old House notes that friction and slight hinge misalignment are common causes and that badly worn hinges may need replacement.
Keep the repair proportional to the problem
Start with reversible steps: locate, tighten, lubricate, test. Move to disassembly or replacement only when the noise persists or the hardware has obvious wear.
If the door swings quietly and the gaps around it stay even, stop there.
Sources
- This Old House — How To Quiet a Squeaky Door — Guidance on friction, lubrication, hinge pins, and worn hardware.