Best Draught Excluders UK 2026
Before you buy a heat pump, a new boiler, or even smart thermostats — fix your draughts. The Energy Saving Trust estimates a well-draught-proofed home saves £65-155/year on heating for a typical investment of under £50. Highest ROI DIY you can do.
Why it matters
Most UK homes leak warm air through gaps around doors, windows, letterboxes, floorboards, loft hatches and unused chimneys. Fixing these is cheap, DIY-able, and works the same whether you're on gas, electric or a heat pump.
How we chose
- Effectiveness (blocks draughts without restricting ventilation)
- Ease of DIY install (under 30 mins per door/window)
- Durability (3+ years without needing replacement)
- Suitability for UK period properties
Our picks
Stormguard Door Draught Excluder Brush
Screw-on brush strip for the bottom of internal/external doors. Fits standard UK doors. 5-year lifespan.
Best for: Main entrance doors with a visible gap at the bottom.
Check latest price on Amazon UK3M Weatherseal Tape (Foam)
Self-adhesive foam tape for window frames and door frames. Compresses to fill uneven gaps. Paintable variants available.
Best for: Wooden sash windows and older wooden doors.
Check latest price on Amazon UKExitex Letterbox Draught Excluder
Screw-on internal brush flap. Blocks 80%+ of letterbox draughts without making post delivery harder.
Best for: Every UK home with a front-door letterbox.
Check latest price on Amazon UKChimney Balloon
Inflatable seal that blocks an unused chimney. Prevents heat loss and cold downdraft. Remove instantly when you want to use the fireplace.
Best for: Period homes with disused fireplaces.
Check latest price on Amazon UKLoft Hatch Insulation Kit
Self-adhesive foam strip + rigid insulation board. Transforms your loft hatch from a huge cold bridge into a sealed barrier.
Best for: Any home with an uninsulated loft hatch (most UK homes).
Check latest price on Amazon UKOur verdict
Do all five. Total spend under £80, installs in one weekend, saves £65-155/year every year. Nothing else in home energy has a payback this fast.