Sash Window Draught Proofing & Restoration in London

Sash Window Draught Proofing is a London-based specialist restoring period sash windows across Kensington, Chelsea, Belgravia, Mayfair, Hampstead, Richmond and the wider Home Counties. With 15 years of experience on Georgian, Victorian and Edwardian properties, we eliminate draughts, reduce noise and improve the thermal efficiency of original timber sash windows without compromising their heritage character.

Our craftsmen install discreet brush and compression seals, replace worn sash cords, refurbish parting and staff beads, and fit slim secondary glazing where extra insulation or acoustic performance is needed. Homeowners typically see a 30% reduction in heat loss and up to 75% less external noise after treatment — with no visible change to the original window fabric.

Call 0207 060 1573 for a free survey and quote, or read our detailed guide to how sash window draught proofing works.

Our sash window services

Restored Georgian sash windows in a London townhouse after draught proofing and secondary glazing

Sash window draught elimination — seals every gap around the sashes, meeting rails and beads.
Secondary glazing installation — slim internal units for maximum thermal and acoustic performance.
Secondary glazing vs draught proofing — compare costs, benefits and use cases.
Sash window restoration — full refurbishment of period timber windows.
Sash windows refurbishment — cords, beads, glazing and finishes renewed.
Sash window repair — stuck, rattling or broken sashes fixed.
Sash cord & rope replacement — genuine hemp cords and brass pulleys.
Heritage window restoration — listed buildings and conservation areas.
Victorian sash window draught proofing — specialist care for 19th-century joinery.
Thermal efficiency upgrades — reduce heating bills up to 30%.
Noise reduction for sash windows — up to 75% quieter interiors.
Window security solutions — discreet locks and restrictors.
Ongoing window maintenance — annual servicing for long life.
Emergency window services — same-day response for broken glass.
Cost of draught proofing — transparent per-window pricing.

London areas we cover

Local sash window specialists across Central, West and South West London and the Home Counties:

See all areas we cover →

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