Sash Window Draught Proofing in St John's Wood
We restore, draught proof and secondary glaze period sash windows across St John's Wood (NW8). Georgian, Victorian and Edwardian homes in the area benefit from our conservation-friendly methods, which eliminate cold draughts, reduce external noise by up to 75% and improve thermal efficiency by around 30% — without altering the character of the original joinery.
Typical projects on St John's Wood properties combine draught elimination, sash cord replacement and secondary glazing where extra thermal or acoustic performance is needed. Every window is surveyed on site and priced individually — call 0207 060 1573 for a free quote in St John's Wood.
Services we offer in St John's Wood
- Sash window draught elimination — Seals every gap around sashes, meeting rails and beads to stop cold air.
- Secondary glazing installation — Slim internal units for maximum thermal and acoustic performance.
- Secondary glazing vs draught proofing — Compare costs, benefits and use cases for both approaches.
- Sash window restoration — Complete refurbishment of period timber sash windows.
- Sash windows refurbishment — Cords, beads, glazing and finishes renewed by hand.
- Sash window repair — Stuck, rattling or broken sashes fixed without replacement.
- Sash cord & rope replacement — Genuine hemp cords and brass pulleys, fitted correctly.
- Heritage window restoration — Conservation-grade work for listed buildings.
- Victorian sash window draught proofing — Specialist care for 19th-century joinery.
- Thermal efficiency upgrades — Cut heating bills by up to 30% with sympathetic upgrades.
- Noise reduction for sash windows — Up to 75% quieter interiors on busy London streets.
- Window security solutions — Discreet locks, restrictors and reinforced beading.
- Ongoing window maintenance — Annual servicing to keep sashes running smoothly.
- Emergency window services — Same-day response for broken glass and failed sashes.
- Cost of draught proofing — Transparent per-window pricing from £150.
- Learn how draught proofing works — Detailed guide to the process, materials and outcomes.
Other areas we cover
- Kensington (SW7, SW5)
- Chelsea (SW3, SW10)
- Belgravia (SW1X, SW1W)
- Mayfair (W1J, W1K)
- Marylebone (W1U, W1H)
- Fitzrovia (W1T, W1W)
- Notting Hill (W11, W2)
- Little Venice (W9)
- Primrose Hill (NW1)
- Hampstead (NW3)
- Highgate (N6)
- Islington (N1)
- Fulham (SW6)
- Chiswick (W4)
- Richmond (TW9, TW10)
- Barnes (SW13)
- Putney (SW15)
- Wimbledon (SW19)
- Clapham (SW4)
- Battersea (SW11)
- Dulwich (SE21)
- Greenwich (SE10)
- Blackheath (SE3)
- Windsor
- Ascot
- Virginia Water
- Weybridge
- Cobham
- Esher
- Guildford
- Marlow
- Beaconsfield
- Gerrards Cross
- Chorleywood
- Rickmansworth
- Radlett
- Chigwell
- Sevenoaks
- Tunbridge Wells
Why choose us
- 15 years restoring London's period sash windows
- Fully insured with a 10-year workmanship guarantee
- Conservation-friendly methods approved for listed buildings
- Free on-site survey and fixed per-window pricing (£150–£600)
- Rated 4.9/5 across 150+ homeowner reviews
Get in touch: 0207 060 1573 · info@sgs.org.uk · WhatsApp