What does draughtproofing mean?
Draughtproofing refers both to the materials and to the practice of sealing the unwanted gaps through which cold outside air enters a building and warm inside air escapes. Typical measures include adhesive strips, brush seals, letterbox flaps, and chimney balloons fitted around doors, windows, loft hatches, and other openings. The word is chiefly British — American English usually says draftproofing or, far more often, weatherstripping — and it belongs firmly to the vocabulary of home improvement, DIY retail, and energy efficiency. Its connotations are practical and economical rather than glamorous: draughtproofing is routinely cited as one of the cheapest and most effective ways to reduce heating bills and improve comfort, especially in older houses with sash windows and ill-fitting doors. Because it costs little and requires no specialist skill, it is often recommended as the first step before larger investments such as wall or loft insulation.
Material, such as strips or seals, installed around doors, windows, and other openings to prevent cold draughts entering a building.
"We fitted foam draughtproofing along the bottom of every external door."
The act or process of making a building resistant to draughts by fitting such materials.
"Thorough draughtproofing can cut heat loss through gaps by a surprising amount."
Rarely pluralized; the noun is almost always used as an uncountable mass noun referring to the material or process collectively.
"Various draughtproofings are available at any hardware store, though most people simply call them strips or seals."
In Britain it's spelled 'draught' like the beer and the chess piece — but on your front door it's the cheapest way to slash your heating bill.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of draughtproofing
Draughtproofing combines "draught," from the Old English verb dragan meaning "to pull or carry," which also gave us "draw" and its northern variant spelling "draft," with "proof," from Latin probare via Old French preuver, meaning to make resistant or impervious. The compound emerged in twentieth-century English alongside modern central heating, as sealing homes against cold air became a recognized trade and consumer product category. It shares its first element with words such as "draughtboard" and "draughts" (checkers), all tracing back to that same Old English root.
Related word forms
How draughtproofing is actually used
"Draughtproofing" is the standard British spelling; American English typically uses "draftproofing" or, more commonly, "weatherstripping" for the same concept. The word is neutral in register and appears mainly in DIY, home-improvement, and energy-efficiency contexts.
Easily confused with draughtproofing
Draughtproofing seals buildings against cold air currents, while drought-proofing prepares land or crops to withstand prolonged lack of rainfall.