Sash Window Restoration London
Traditional sash window specialists serving all London boroughs.
✓ No Call-Out Fee
✓ 5-Year Guarantee
✓ Same-Day Response
✓ Fully Insured
Sash window restoration is the process of returning a window to full working order while preserving as much of the original fabric as possible. It is not the same as replacement — and in most cases, it is the better choice: cheaper, faster, more environmentally responsible, and more appropriate for the character of the property.
🏠 What Full Restoration Involves
A complete restoration addresses every aspect of the window — the mechanism, the timber, the glazing, the draught seal, and the finish. The result is a window that operates smoothly, seals properly, and looks as it was intended to look.
- Full inspection and condition assessment
- Sash cord replacement — all four cords, both sashes
- Staff bead and parting bead replacement for draught proofing
- Meeting rail brush seal fitted
- Pulley wheels inspected and replaced if needed
- Timber repairs where required — epoxy or splice
- Glass replaced where cracked, broken or misted
- Ironmongery replaced or refurbished
- Full preparation and painting — prime, undercoat, gloss
🎯 Our Restoration Philosophy
We restore before we replace. We repair before we repaint. We assess honestly and quote accurately — never recommending work that is not necessary, and never cutting corners on work that is.
- Survey every window individually — condition varies even in the same house
- Quote for what is needed — not what generates the most revenue
- Use quality materials — waxed sash cord, linseed putty, period ironmongery
- Take the time the job requires — not the time the schedule allows
- Guarantee every job for five years
Why London homeowners choose Hartwell Sash
Restore First
We never recommend replacement when repair will do the job. Your original windows are always our priority.
Period Specialists
Victorian, Georgian, Edwardian — we understand Conservation Areas and Listed Buildings across London.
5-Year Guarantee
Every job is covered by a 5-year workmanship guarantee. Fully insured and fully accountable.
Free survey today
We visit your property, assess every window and give you an honest quote — no call-out fee, no obligation, no pressure. Same-day response guaranteed.