Draughty Doors and Windows: Fixes a Carpenter Can Make
Draughty doors and windows waste heat. Here is what a carpenter can fix, from rehanging doors to sealing frames, before you think about replacement.

As the evenings draw in across Hampshire, most of us notice the cold spots: the chill along the hallway floor, the curtain that moves on a still night, the bedroom that never quite warms up. A lot of that heat loss comes through doors and windows that no longer fit their frames properly. The good news is that many draughts can be cured with sound carpentry rather than expensive replacement.
Why Doors and Windows Start Letting in Draughts
Timber moves. It swells when it is damp and shrinks when it dries out, and over years of seasons that movement opens up gaps. In older Hampshire homes, particularly Victorian and Edwardian terraces in Southampton, Portsmouth and Winchester, houses have also settled, so frames that were once square have dropped slightly out of true. A door that closed snugly when it was hung may now catch at one corner and leave a gap at the other.
Other common causes include worn or loose hinges, letting a door sag on its frame, perished or missing draught seals, door stops that have been knocked out of position, and gaps behind frames where the original filling has shrunk or crumbled away. On windows, worn sash beads, loose parting beads and failed putty are frequent culprits. Each of these has a practical fix, and our repairs and maintenance service covers all of them.
Fixes for Draughty Doors
The first job is always to work out why the gap is there. Packing a sagging door with foam strip might hide the problem for a few weeks, but it will not stop the door binding or the seal tearing. A proper fix usually starts with the hanging. Typical door fixes include:
- Tightening or replacing worn hinges, and packing or re-cutting hinge recesses so the door sits square in the frame
- Resetting door stops so the door closes evenly against them along its full height
- Fitting a quality rebate seal or brush strip in place of old perished foam
- Adding a threshold bar or a weather bar and drip on external doors to stop wind-driven rain and draughts at the bottom
- Fitting a letterbox brush, a keyhole cover or a concealed draught excluder at the foot of the door
- Easing and rehanging a door that has twisted, then sealing all six faces so it stays stable
If a door binds as well as leaks, our guide on why doors stick explains when planing is enough and when a rehang or replacement makes more sense.
Fixes for Draughty Timber Windows
Traditional box sash windows are a common feature of period homes across Hampshire, and they have a reputation for rattling and letting in cold air. Much of that reputation comes from neglect rather than design. A sash window that has been eased, re-corded and fitted with brush seals in the beads and meeting rails can be surprisingly snug, while keeping its original glass and character.
For casement windows, the fixes are similar to doors: checking the hinges, easing swollen opening lights, re-seating the frame where it has moved and fitting a discreet compression seal into the rebate. Loose or rotten beads can be replaced, and failed putty raked out and renewed so the glass is sealed again. Where small sections of a frame or sill have rotted, splicing in new timber is often far cheaper than replacing the whole window.
Do Not Forget the Gaps Around the Frame
Sometimes the door or window itself is fine, and the draught is coming around the outside of the frame. Old fillings dry out and fall away, leaving gaps between the frame and the brickwork or plaster that you cannot see behind the architrave. Removing the architrave, filling the gap properly with an appropriate insulation or sealant and refitting the trim cures the problem permanently. The same goes for gaps under window boards, which can let cold air from the cavity into the room.
It is worth a word of caution on older houses. Period properties were built to breathe, and sealing every gap completely can trap moisture and lead to condensation or mould. A good carpenter will tell you where to seal and where to leave some ventilation, particularly in kitchens, bathrooms and rooms with open fireplaces.
Repair or Replace?
Replacement is sometimes the right answer, for example when a door is badly warped, a frame has widespread rot or a window is beyond saving. But in many homes the joinery is sound and simply needs adjustment and sealing. As a rough guide only, sorting out a sticking, draughty internal door might take an hour or two, while overhauling a set of sash windows is more involved. Every job differs, so it is always worth having someone look before you commit to new units.
Get Your Draughts Sorted
If you have doors that rattle, windows that whistle or cold spots you cannot track down, we can take a look, find the cause and recommend the simplest lasting fix. Have a look at our repairs and maintenance service to see the kind of work we cover across Hampshire, or get in touch for a free, no-obligation quote. Dealing with draughts now means a warmer home this winter and lower heating bills for years to come.
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