A cold strip across the floor by the front door, a curtain that moves when the windows are shut, or a room that never feels warm despite the heating being on - these are all signs of unwanted draughts. The best ways to reduce draughts at home start with finding where air is getting in, then choosing fixes that suit the property rather than simply turning up the thermostat.
Draught-proofing can make a noticeable difference to comfort, particularly in older UK homes with original windows, suspended timber floors or open chimneys. It can also help reduce heat loss and avoid wasting money on heating rooms that are constantly pulling in cold air. The aim is not to seal every part of the house completely. Your home still needs controlled ventilation to manage moisture and maintain air quality.
Find the source before buying draught-proofing
Start on a windy day, when gaps are easier to spot. Run your hand slowly around window frames, external doors, loft hatches, skirting boards and pipework where it enters an outside wall. A thin piece of tissue can also reveal a small air movement. Look outside too: cracked sealant, damaged pointing, missing air bricks or gaps around cables may be the real cause.
Do not block purpose-built vents, extractor fans, air bricks or flues. These are there to provide essential ventilation or safely remove combustion gases. If you are unsure whether an opening is intentional, ask a qualified local professional to check it before sealing anything.
Seal windows properly
Windows are a common source of draughts, especially timber frames that have moved over time or older uPVC units with worn seals. The right remedy depends on the type of window and the condition of the frame.
For opening windows, self-adhesive foam, rubber or brush strips can close small gaps between the sash and frame. Foam is inexpensive and useful for uneven gaps, but it tends to wear sooner. Rubber seals last longer and provide a better finish where the gap is consistent. Brush strips are often suitable for sliding sash windows because they allow the window to keep moving.
If cold air is coming through the glass rather than around it, draught strips will not solve the problem. Secondary glazing, replacement sealed units or properly fitted double glazing may be more appropriate. Condensation between panes, misted glass or cracked frames are signs that it is worth getting advice from a window specialist.
Avoid sealing windows shut if they are needed for background ventilation. In bedrooms and bathrooms especially, opening windows safely remains useful for clearing moisture.
Check external sealant and trickle vents
External sealant around window frames can crack, shrink or separate from brickwork. Replacing failed sealant can stop wind getting behind the frame, but the surface must be clean, dry and suitable for the product used. Large gaps or movement around the opening may point to a bigger installation or masonry issue.
Trickle vents should remain open or be used as intended. Closing them may seem like an easy win on a cold day, but it can increase condensation and mould risk, particularly in well-insulated homes.
Stop draughts around external doors
A well-fitted door should close firmly without needing to be forced. If you can see daylight around the edge, feel air near the lock, or notice a gap below the threshold, start with the seals and alignment.
Fit compressible draught strips around the sides and top of the door frame. For the bottom, a brush or hinged flap draught excluder can work well where there is a consistent gap. A fixed threshold seal may be better for a door that opens onto a level surface, but it needs to be compatible with the door and not create a trip hazard.
Letterboxes and keyholes can also let in cold air. A letterbox flap with an internal brush cover and a keyhole cover are small changes that can improve comfort in a hallway. A fabric draught excluder placed along the inside of the door is useful as a temporary measure, but it will not correct a warped door or damaged threshold.
If the door catches, drops on its hinges or has visible gaps that change from one side to the other, adjustment may be needed. Timber doors can swell, shrink and twist with weather changes. Composite and uPVC doors can also move out of alignment. A carpenter, locksmith or door specialist can identify whether a simple adjustment will do or whether parts need replacing.
Deal with gaps in floors, skirting and pipework
Suspended timber floors are common in period properties and can allow cold air up through gaps between boards and around the perimeter of a room. Flexible filler can seal narrow gaps between floorboards, while larger or moving gaps may need specialist products or repairs. Take care around older boards, as lifting them can expose pipes and electrical cables.
Gaps between skirting boards and floors or walls can often be sealed with a flexible decorator's caulk. Use a product suitable for the location and allow for movement. In rooms with hard flooring, a well-fitted rug can make a cold floor feel far more comfortable, though it will not stop air entering from below.
Check where pipes, cables and waste outlets pass through external walls, under sinks and behind appliances. Small gaps can usually be filled with an appropriate sealant. Larger voids, damaged brickwork or gaps close to gas pipework should be assessed by a competent tradesperson. Fire-rated materials may be required where services pass through certain walls or floors.
Use chimney draught controls safely
An unused open fireplace can act like a permanent open window. If the chimney is sound and no longer in use, a chimney balloon, removable draught stopper or fitted chimney cap can reduce heat loss. These options should be chosen carefully because the flue may still need ventilation to prevent damp problems.
Never block a chimney serving a working fireplace, wood burner, boiler or other fuel-burning appliance. If you use the fireplace occasionally, choose a removable solution and make sure it is removed before lighting any fire. A chimney sweep or qualified heating professional can advise on the safest approach, particularly where several flues run through the same stack.
Improve loft hatches and access panels
Loft hatches are often forgotten, yet warm air rises and can escape through a poorly fitted cover. Add insulation to the top of the hatch if there is space, then fit a compressible seal around the frame. The hatch should still open safely and sit flush when closed.
The same approach applies to access panels for pipework or storage cupboards on external walls. Seal the panel edges where appropriate, but keep access straightforward for future maintenance.
Address the building fabric when quick fixes are not enough
Draught-proofing strips are effective for small, predictable gaps. They are not a substitute for repairing defective brickwork, rotten window frames, loose roof tiles or damaged render. If a room remains cold after basic draught-proofing, look for signs such as damp patches, peeling paint, crumbling mortar, stained ceilings or mould around window reveals.
In rented homes, report persistent draughts and related damp issues to the landlord or managing agent in writing. Take dated photos and describe where and when the problem occurs. Landlords should address disrepair rather than relying on tenants to mask it with temporary fixes.
For larger jobs, getting the right person matters. A carpenter may be best for a timber door or floorboards, a window specialist for failed glazing, a roofer for loft-level air leaks and a builder for gaps caused by damaged masonry. VeriTrade UK can help homeowners find trusted local tradespeople for repairs that need a professional assessment.
The best order to reduce draughts at home
Start with the cheapest, most obvious gaps: door edges, letterboxes, window seals and loft hatches. Next, inspect floors, pipe penetrations and unused chimneys. Leave structural repairs, glazing failures and anything involving combustion appliances to qualified professionals.
A warmer home should still be a healthy home. Keep planned ventilation working, use bathroom and kitchen extractors, and watch for condensation after making changes. If a simple seal transforms a cold room, that is useful progress. If the draught keeps returning, it is usually a sign that the property needs a proper repair rather than another roll of tape.