Fixing Draughts in an Old Country Cottage

Why Old Cottages Feel So Cold

There is nothing quite like the first cold snap in a period cottage. The fire is lit, the kettle is on, and yet a determined breeze is doing laps around your ankles. Old buildings were never designed to be airtight. Timber frames move, lime plaster breathes, and every floorboard has had a century or two to settle into a slightly different position from its neighbour. In many ways that movement is what keeps the building healthy.

The trick is not to seal the place up like a plastic box. It is to find the handful of places where cold air pours in and warm air pours out, and to block those while leaving the fabric of the cottage free to breathe. Done properly, it is one of the cheapest comfort improvements you can make, and it guards your original features rather than covering them up.

Hung Right, Curtains Do Half the Work

Curtains are the most underrated draught tool in a country home. Most are hung too narrow and too short, which lets cold air slide down the glass and spill into the room. Take the pole or track well beyond the window reveal, ideally 20cm past each side, and mount it as high as you sensibly can, close to the ceiling or up inside a pelmet. Let the curtains fall to the floor, or at the very least brush the sill.

Fabric matters more than the label. Thin linings marketed as thermal do very little. What works is weight and trapped air: wool, heavy velvet, thick tweed, or an old-fashioned curtain with a wool interlining sandwiched between the face fabric and the lining. That interlining is the secret of every draughty manor house that somehow stays cosy. Draw them before dusk, when the glass starts to chill, and keep them closed until the sun is properly up.

Door Snakes, Excluders and Thresholds

A door snake is a simple thing and it works beautifully: a tube roughly a metre long, filled with rice, dried beans, buckwheat hulls or sand, and covered in corduroy, tweed or a scrap of old blanket. Sand is heavy but excellent for outside doors that catch the wind. Make two for a really cold room, one for each side, or one long one that tucks under both the door and its frame.

At the base of the door the snake does the work, but around the edges you need something fixed. Self-adhesive foam strip is a waste of money on an old frame, because no two gaps are the same width and the door will simply push it off. Use a screw-fixed brush or wiper seal set into the rebate, or a thin wooden batten carrying the seal so it follows the lie of the frame. External doors also deserve a letterbox brush and a keyhole cover; those two small gaps can whistle all winter.

Chimneys, Letterboxes and Other Sneaky Gaps

An open chimney is, quite literally, a hole in your house. Even when the fire is out, warm air is drawn up the flue and cold air comes down to replace it, which can make a room feel far colder than the thermometer suggests. A chimney balloon, or a simple sausage of sheep's wool stuffed up the flue, stops that circulation. Always leave a visible note on the mantelpiece to remove it before lighting a fire, and never block a flue that serves a working stove, gas fire or boiler.

Then walk the rooms looking for the odd ones: an extractor fan with a flap that no longer closes, a cat flap, an old serving hatch, a loft hatch that sits slightly proud of its frame, and air bricks that ventilate a suspended floor or a solid fuel appliance. Air bricks should nearly always stay open, so leave those alone and deal with the rest.

Floors, Skirtings and the Little Gaps Nobody Notices

• Skirting boards: run a bead of flexible, paintable sealant along the join with the floorboards, or press in a sliver of softwood with linseed oil putty on older timber. Avoid rigid fillers that crack as the building moves.
• Floorboard gaps: traditionally packed with rope or felt, or with narrow strips of wool. A flexible, movement-tolerant filler works well between boards, but keep it away from the edges of the room.
• Sash and casement windows: fit draught strip into the frame rebate, but never so tightly that the sash will not slide. Old windows must still open.
• Loft hatches: a brush seal around the frame costs very little and stops a surprising amount of cold air dropping into the landing.
• Around pipework: where a pipe or cable passes through an external wall, pack the gap with sheep's wool or a breathable filler rather than expanding foam.

Warmth Without Sealing the Cottage Shut

Here is the important caution. A period cottage needs to breathe. Moisture from cooking, washing and breathing has to escape somewhere, and if you block every gap with impermeable materials, that moisture condenses on cold surfaces instead, bringing damp patches, black mould and rotting timber in its wake. Stick to natural, breathable materials wherever you can: wool, cotton, linen, hemp, felt and paper-based tapes rather than plastic and silicone.

Leave a working chimney and any ventilated appliance with the air it needs, and open a window wide for a few minutes each morning to purge the damp air rather than leaving a trickle of cold coming in all day. Do that, and you will have a cottage that is genuinely warmer, quieter and cheaper to heat, with its plaster, timber and wobbly floors entirely intact. That is the whole art of it: not fighting an old house, but teaching it to keep its warmth in.