Which? Trusted Trader
4.8/5 Trustpilot Rating
TIMBER SASH WINDOW SPECIALISTS
Traditional Style,
Modern Performance
Precision Crafted in Berkshire.
Our timber sash windows preserve traditional elegance
while delivering outstanding thermal performance.
Warm, Secure & Beautiful Timber Sash Windows.
Since 1994
The Sash Window Workshop has over 30 years of experience in manufacturing and installing replacement timber sash windows across London and the South of England.
We understand the unique requirements of both period & more modern homes. Whether you live in a Georgian townhouse, a Victorian terrace, a country cottage, or a more contemporary property our windows replicate original detailing—preserving the character of your home while keeping it warm and secure.
- Double-glazed energy efficiency
- Draught-proofed as standard
- Sustainably sourced Accoya™ wood
- Full planning & conservation compliance
Why Choose Us?
The Standard in Timber Sash Windows
50 Year Guarantee
Our Accoya™ timber comes with an industry-leading 50 year anti-rot guarantee, ensuring peace of mind for decades.
Award Winning
Proudly endorsed as a Which? Trusted Trader and celebrating over 30 years of excellence in British joinery.
Heritage Approved
Expertly made to meet strict conservation area requirements while significantly improving energy efficiency.
Peace of Mind, Guaranteed
We are so confident in the quality of our materials and craftsmanship that we offer some of the most comprehensive guarantees in the industry.
50
YEARS
Accoya Anti-Rot
Guarantee
YEARS
Joinery
Guarantee
YEARS
Guarantee
YEARS
Guarantee
5
YEARS
Guarantee
*Maximum Guarantees Shown. Please see our Guarantee and Maintenance documents for further information.
Trusted by Homeowners
Rated Excellent on Trustpilot
Our Simple 3-Step Process
Free Consultation
We visit your property to discuss your needs and provide expert advice tailored to your home.
Bespoke Design
Every window is precision-crafted in our Berkshire workshop to your exact specifications and home style.
Expert Installation
Our skilled, in-house team installs your new windows with care, respect, and minimal disruption.
Tell Us About Your Project
Simply complete the form and one of our expert surveyors will be in touch to answer your questions and guide you through the next steps.
CALL US
01344 868 668
EMAIL US
info@sashwindow.com
Can we help with anything else?
Casement Windows
Front Doors
French Doors
Bi-fold Doors
Secondary Glazing
The Sash Window Workshop
Specialists in the manufacture and installation of traditional timber windows and doors. Restoring the architectural integrity of British homes for over three decades.
QUICK LINKS
CONTACT
Company No. 02897134 | VAT No. 480 1707 04 | Copyright © 2025 The Sash Window Workshop Trading Ltd.