Professional Team

We Take Pride in our work

Why Choose Us

Trusted Craftmanship
Unmatched Quality

At Century Sash Windows, we take pride in every detail—from precise measurements to flawless finishing—to ensure your windows are truly crafted, not just installed. We use only the finest timber, glass, and hardware to deliver durability, performance and value.
Our fully qualified team combines traditional sash-making with modern standards, carrying out clean, respectful installations and offering exceptional customer care.

0 +

Projects Completed

sign up to our newsletter

100%

Happy Customers

17 Years

Experience

100%

Customer Satisfaction

Location

London, United Kingdom

Our Windows & Doors Services

We’re specialists in traditional timber windows and doors at Century Sash Windows. From heritage sash window refurbishment to bespoke door installations, we use the best materials and craftsmanship to match your home, your style, and your needs.

  • Sash Window Refurbishment — Repairing and refurbishing original sash windows: rotten rails, cords & weights, weather-seals, glass replacement, repainting, and draught proofing.

  • Sash Window Retrofit & Double-Glazing — Upgrading energy efficiency with heritage slimline units or secondary glazing while keeping original sightlines.

  • Casement Window Repair & Replacement — Restoring or remaking timber casement windows, matched profiles, quality glazing.

  • Heritage Sash Windows — Period-correct style, mouldings, putty detailing and ironmongery, suitable for listed buildings / period properties.

  • Sash Window Replacement — When necessary, replacing old sashes or boxes with new timber units that respect original designs.

  • Hardwood Front Doors & Timber French Doors — Manufacturing, repairing or replacing with matching finishes, strong joinery and acoustics/insulation where needed.

  • Timber Door Refurbishment — Refurbishing existing doors: repairs, finishes, hardware, sealing.

  • Bespoke Windows & Doors — Custom designs, shapes, finishes, glass and ironmongery—tailored to your property.

  • Premium aluminium windows & doors — Ideal for heritage zones or modern homes needing slimmer sightlines, minimal upkeep, and strong security.

black-sash-window

Our Process

We use only certified materials and adhere to recognised standards so your windows and doors aren’t just beautiful—they last, perform, and comply with Building Regulations. We provide clear guarantees and aftercare advice, making sure maintenance, draft-proofing and weather protection are handled with care so your investment continues to work well for years.

Why Choose Century Sash Windows

Our team combines decades of experience in refurbishing heritage and period windows with high-quality materials and finishing, giving you beautiful, long-lasting windows and doors that really perform. We’re fully certified, offer robust guarantees, and always work to meet both conservation and modern building standards so your home stays comfortable, efficient, and protected

  • Purpose-led craftsmanship: We assess each window or door to repair and retain original parts wherever possible.

  • Performance when it matters: Improved thermal efficiency, reduced noise, secure fittings without compromising appearance.

  • Expert heritage understanding: Knowledge of period design, conservation requirements and local planning where needed.

  • Bespoke solutions: Designs, materials and finishes tailored to what you want—not a one-size-fits-all.

architect-at-work.jpg

Certifications & Guarantees

At Century Sash Windows, we uphold the highest standards in window & door craftsmanship. Alongside our process, we are proud to be backed by industry-recognised certifications and guarantees to give you confidence from survey to finish:

Ready to Transform Your Windows & Doors?

Contact us today for a free site visit and quote.