Draught Proofing
The sealing of gaps around windows, doors, letterboxes, and keyholes to prevent cold air infiltration and reduce heat loss. Draught proofing is one of the most cost-effective energy efficiency improvements, typically costing £80–£200 per property and saving £30–£100 per year on heating bills. Self-adhesive foam strips, brush seals, and wiper seals are the most common materials.