Draught-Proofing: The Cheapest Way to a Warmer Home

Draughts make a room feel colder than the thermostat suggests, encouraging people to turn the heating up. Sealing them is one of the most cost-effective energy improvements you can make.

Most draught-proofing can be done without specialist skills or tools.

Find the draughts

On a windy day, move your hand slowly around windows, doors, skirting boards, and loft hatches. A candle or incense stick can help you see air movement, used carefully.

Doors

Fit brush or rubber strips to the bottom of external doors
Add self-adhesive foam or rubber strips around door frames
Fit a letterbox brush and a keyhole cover

Windows

Use foam, rubber, or brush seals for opening windows. For sash windows, specialist products are available. Do not seal windows that need to open for ventilation or escape.

Floors and skirting

Fill gaps between floorboards and skirting boards with appropriate filler or sealant. Rugs also help.

Do not block ventilation

Air bricks, trickle vents, extractor fans, and vents for fuel-burning appliances must stay clear. Good ventilation is essential for preventing damp and for safety.

This is general sustainability information. Recycling, composting, and disposal rules vary by municipality — check local guidance. Cost and energy savings are estimates and depend on your home and usage.

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