Sash Window Draught Proofing in N1 (Islington)
Local sash window specialists serving the N1 postcode covering Islington. We work on Georgian, Victorian and Edwardian homes throughout Islington, combining hand craftsmanship with modern draught seals and slim secondary glazing where needed.
See our full London coverage map, or read up on the cost of draught proofing before booking a free survey.
Services in N1
- 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.
Frequently asked questions
- Do you cover Islington for sash window draught proofing?
- Yes — we cover Islington and the surrounding streets weekly. Free on-site surveys are usually offered within 3–5 working days for homeowners in Islington.
- Can you work on listed period properties in Islington?
- Yes. Many homes in Islington are Grade II listed or in a conservation area. Our draught proofing and restoration methods are reversible and conservation-friendly, and we regularly liaise with local planning officers where required.
- How much does sash window draught proofing cost?
- Draught proofing is priced per window, typically £150–£600 depending on size, condition and whether cords, beads or glazing also need renewing. Every quote is fixed after a free on-site survey.
- How long does draught proofing a sash window take?
- A typical Victorian or Edwardian sash window takes 2–4 hours to draught proof, service and rebalance. A whole house of 8–12 windows is usually completed in 2–3 days with minimal disruption.
- Will draught proofing damage my period sash windows?
- No. We use conservation-grade brush and compression seals routed into the existing joinery. The work is fully reversible, protects the original timber and is approved for use on Grade II listed buildings.
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