Learning how to fix a door that sticks in summer is something most homeowners deal with — wood expands in heat and humidity, and a door that closed perfectly in winter can become nearly impossible to shut by July. Here’s how to fix it without permanently removing too much material.

Why It Happens

Wood is naturally porous and absorbs moisture from the air. In humid summer months, door frames and doors expand slightly. This is especially common in older homes and with doors that aren’t fully sealed with paint on all sides including the top and bottom edges.

Step 1 — Find Exactly Where It Sticks

Close the door slowly and watch where it catches. Rub a piece of chalk or a pencil along the edge of the door frame, then close the door — the chalk will transfer to the spot where it’s rubbing.

Step 2 — Try the Hinges First

Before removing any wood, tighten every hinge screw. A sagging door caused by loose hinges can cause sticking that looks like a swelling problem but isn’t. If hinge screws are stripped, use the toothpick and wood glue trick to give them new material to bite into.

Step 3 — Sand Light Rubs

For minor sticking, sand the rubbing spot with 80 grit sandpaper. Work carefully and check frequently — removing too much material means a gap in winter when the wood contracts.

Step 4 — Plane Significant Sticking

If sanding isn’t enough, remove the door by tapping out the hinge pins and use a hand plane or belt sander on the sticking edge. Work in passes and test the fit frequently.

Step 5 — Seal the Edges

The most important long-term fix is sealing all edges of the door with paint or primer — including the top and bottom which most people skip. Sealed wood absorbs far less moisture and is much less likely to swell seasonally.

A Temporary Fix

If you need a quick fix right now, rubbing a bar of soap or a wax candle along the sticking edge reduces friction enough to get through the summer while you plan a permanent repair.

Just moved into a new home? Check out our guide on what to do when you move into a new house.

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