Energy Saving Tips 3: Door draught proofing

Draught-proofing external doors can stop a lot of heat from escaping, and won’t cost you much. There are four main areas to consider draught-proofing:

  • keyhole – buy a purpose-made cover that drops a metal disc over the keyhole
  • letterbox – use a letterbox flap or brush, but remember to measure your letterbox before you buy
  • gap at the bottom – use a brush or hinged flap draught excluder
  • gaps around the edges – fit foam, brush or wiper strips like those used for windows

Internal doors need draught-proofing if they lead to a room you don’t normally heat, such as your spare room or kitchen. Keep those doors closed to stop the cold air from moving into the rest of the house. If there is a gap at the bottom of the door, block it with a draught excluder – you can make one stuffed with used plastic bags or bits of spare material.

Door strip for external door

Double sided door strip internal door

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