How to Adjust a Sticking Wooden Door

A door that sticks is more than a nuisance—it can be a sign that your home is breathing with the seasons. As humidity rises, timber swells, and a door that glided shut in winter can suddenly catch on the frame. The good news is that most sticking doors can be adjusted with a few basic tools and a little patience. Here's how to diagnose and fix the problem properly, without making a mess of your joinery.

Why wooden doors swell and stick

Wood is hygroscopic: it absorbs and releases moisture from the air. In a typical British home, relative humidity can swing from 40% in winter to 70% or more in summer. When the air is damp, the cells in the timber swell, and a door can grow by a few millimetres across its width. That might not sound like much, but a gap of 2mm can vanish overnight. External doors are especially vulnerable, but internal doors also move when bathrooms, kitchens, or drying laundry add moisture to the air. Solid timber doors move more than engineered ones, but even veneered doors can bind if the frame itself has swelled. Before you reach for a plane, it's worth understanding that this is normal behaviour—not a fault.

Finding the exact rubbing point

You cannot fix a sticking door until you know precisely where it rubs. Start by closing the door slowly and listening for the scrape. If you cannot hear it, run a strip of chalk or a soft pencil along the edge of the door where you suspect contact. Open and close the door a few times; the chalk will transfer to the frame at the tight spot. Alternatively, slide a piece of thin card or a sheet of paper between the door and the frame—it will grip where the gap is tightest. Check the whole perimeter: the top edge, the latch side, and the hinge side. Most sticking happens on the latch side or the top corner opposite the hinges, because the door sags slightly. Mark the area with a pencil on both the door and the frame so you have a clear reference.

Tools and preparation for a tidy job

You only need a few items, but using the right ones makes all the difference. Gather:

• A smoothing plane or block plane with a sharp blade
• A sanding block with 80-grit and 120-grit paper
• A wood chisel (for hinge adjustments)
• A screwdriver and a hammer
• Masking tape, a dust sheet, and a pencil
• A straight edge or combination square

Protect the floor with a dust sheet. If you can, take the door off its hinges and lay it across two trestles—this gives you far more control. If the door is too heavy or the hinges are painted over, work in place, but tape the surrounding frame to catch shavings. Always plane with the grain, and take light passes rather than trying to remove too much at once.

Removing timber: planing and sanding the edge

Mark a pencil line on the door edge to show how much you need to remove—usually no more than 1–2mm. A good rule is to remove half a millimetre at a time, then test the fit. Set the plane for a fine cut and work from each end towards the middle to avoid splintering the grain. If you are planing the latch side, be careful not to plane past the latch mechanism. After planing, sand the edge smooth with 120-grit paper, rounding the leading edge very slightly so it does not catch again. Rehang the door and check the fit. If it still sticks, mark the new contact point and repeat. Patience is key: it is far easier to remove a little more timber than to add it back.

When the problem isn't the door: hinge and frame adjustments

Sometimes the door itself is fine, but the hinges or frame are the culprit. If the door binds on the hinge side, check the screws. Loose screws can be tightened, or replaced with longer ones that bite into fresh timber. If a hinge is set too deep, you can pack it out with a thin card shim behind the hinge leaf. If the door rubs at the top latch corner, the top hinge may be pulling the door out of alignment—tightening that hinge often lifts the corner. For a door that sticks against the strike plate, you can gently file the plate or move it a few millimetres. Only adjust the frame as a last resort, as it is much harder to undo.

Sealing and preventing future sticking

Once the door closes sweetly, seal all six sides—including the top and bottom edges—with paint, varnish, or oil. This slows down moisture exchange and reduces seasonal movement dramatically. In humid rooms, use an extractor fan or a dehumidifier, and avoid drying laundry indoors where possible. Check your doors twice a year, in spring and autumn, and make tiny adjustments before the problem returns. A well-fitted door that is properly sealed will serve you for decades, and you will have the satisfaction of knowing you fixed it yourself.