A draught excluder is one of the simplest ways to keep the cold out. But between single, double, weighted, fabric and faux-leather models, it's easy to get it wrong and end up with one that slides, rubs or sits in a corner. Here's what really matters.
What does a door draught excluder do?
It closes the gap under an internal door so cold air from a neighbouring space (hallway, entrance, stairwell) can't slide in along the floor. It also blocks much of the strip of light and the dust that come underneath. It doesn't replace proper insulation, but it removes a very common source of discomfort with minimal effort.
Single or double: which one?
A single draught excluder sits on one side of the door. It works as long as the door stays shut, but it stays on the floor when you open it, so you have to put it back each time. A double draught excluder has two rolls joined by a strip that runs under the door: it protects both sides and moves with the door when it opens. For a room you walk through often, the double is far more practical.
What length do you need?
Measure the width of your door (the door leaf, not the frame). The draught excluder must cover all of it. Internal door widths vary from home to home, so check yours with a tape measure. If the excluder is slightly longer, some models can be trimmed: check the product page before you buy.
What door thickness and gap underneath?
This is the point people most often forget. With a double draught excluder, the strip has to fit under the door and the rolls have to sit either side of it: the door thickness and the height of the gap must match the manufacturer's values. Measure the gap in the middle and at both ends, because floors aren't always level.
Which floors does it work on?
On smooth floors (wood, tiles, laminate, vinyl), a double draught excluder glides easily. On carpet or a thick rug it rubs and can stop the door from moving freely: a brush door seal set at the right height is a better fit there.
Cover, colour, care: what to look out for?
- The cover: a hard-wearing fabric that doesn't bobble too quickly.
- Care: a model that's easy to dust and, ideally, has a washable cover.
- Colour: grey, beige or white go with most doors.
- Finish: even stitching and well-closed ends.
Where should you never use a draught excluder?
Never under a door that needs to let air through for ventilation: a room with a boiler, water heater, stove or gas cooker, or a door with an air vent. If in doubt, ask a professional. And not outdoors: a draught excluder isn't made for rain.
How many do you need?
One for each door that lets air through. Do the candle test in each room to find out which. Often: the bedroom, living room, home office and hallway.
Frequently asked questions
Does a draught excluder block noise? It isn't soundproofing. By closing the gap under the door it may soften some sounds, nothing more.
Can I leave it in all year? Yes, but many people take it out in spring to let air circulate and put it back in autumn.
The double draught excluder that moves with the door: Discover the double draught excluder
Article written by the Abrilys team. This is general advice: for an assessment of your home, or if you are unsure about the ventilation of a room, ask a professional.