Business Details
19 Years
experience
Expert Sash Window Restoration Services in London
Established in 2007, Sash Window Heritage combines traditional craftsmanship with modern technology to restore and enhance period sash windows. Our team brings over 40 years of combined experience in timber window restoration, specialising in retrofitting 10-12mm double glazed units that maintain original architectural integrity while significantly improving thermal efficiency. We employ advanced techniques such as window care resin systems for permanent repairs and draughtproofing solutions that reduce noise and heat loss. Our expertise extends to complete window replacements, frame repairs, and bespoke joinery projects across London and the South East. We prioritise preserving historical character while delivering modern performance benefits, including reduced heating costs and enhanced security.Our commitment to quality is demonstrated through meticulous attention to period details and use of premium materials tailored to client budgets. With a proven track record in challenging projects, including conservation area properties and listed buildings, we maintain rigorous standards of workmanship across all our services. Our team includes specialists in window restoration, painting, and carpentry, ensuring comprehensive solutions for both residential and commercial properties. We offer free site surveys and tailored consultations to address specific client requirements. Our reputation as London's leading sash window specialists is built on consistent delivery of durable, aesthetically authentic solutions that meet contemporary energy efficiency standards.
Services
Sash Window Restoration
Double Glazed Units
Draughtproofing
Frame Repair
Bespoke Joinery
Window Painting
Conservation Projects
Casement Window Repair
Feature Window Installation
Timber Restoration
Details
- Year established: 2007
Highlights and features
- 40+ years combined experience in sash window restoration
- Pioneers in 10-12mm slimline double glazed units for period windows
- Permanent resin-based repairs for rotten frames
- Comprehensive draughtproofing solutions with guaranteed results
- Specialist team with conservation area project expertise
What people say
Windows look fab
Job well done
Satisfied with service
Excellent results
Professional team
Services
Sash Window Restoration
Specialist restoration of period sash windows using 10-12mm double glazed units that maintain original appearance. Our process includes frame repairs, draughtproofing, and resin treatments for rotten timber. This service improves thermal efficiency while preserving historical authenticity, reducing heating costs by up to 75% compared to single glazing.
Double Glazed Units
Installation of ultra-thin 10-12mm double glazed units into existing sash windows. These high-performance units use inert gases and low-e glass to achieve U-values as low as 1.2. The solution maintains traditional aesthetics while delivering modern energy efficiency and noise reduction benefits for period properties.
Draughtproofing
Comprehensive draughtproofing service that eliminates air leaks in traditional sash windows. Our method combines modern sealing technology with traditional carpentry to stop rattling, reduce noise, and improve insulation. The process maintains original window mechanics while enhancing comfort and energy efficiency in heritage buildings.
Frame Repair
Specialist frame repair using window care resin system and traditional carpentry techniques. We replace rotten timbers with precision splicing while maintaining original architectural details. This service extends window lifespan indefinitely and preserves building character without requiring full replacement.
Bespoke Joinery
Made-to-measure joinery solutions for period properties including new box sash windows, casement windows, and feature doors. We match existing mouldings and architectural details using premium timbers. All installations include draught sealing and painting services to maintain historical accuracy with modern performance standards.
People
Malcolm Mew
Managing Director
With over 40 years in construction, Malcolm founded Sash Window Heritage in 2007. He specialises in preserving timber window heritage while integrating modern double glazing technology. His expertise ensures traditional craftsmanship meets contemporary energy efficiency requirements in every project.
Graham May
Director
Graham brings 25+ years of timber restoration experience to the business. He focuses on maintaining period character while implementing modern repair techniques. His attention to detail ensures each project preserves original architectural features while delivering durable, functional improvements for historic properties.
Mark Whalley
Senior Fitter
With 21 years in the timber window industry, Mark leads installation projects. His expertise in restoration techniques ensures challenging jobs achieve perfect results. He continually refines methods for integrating modern glazing systems into traditional window frames while maintaining historical accuracy.
Tony Thompson
Painter
Tony's 27 years of painting experience ensure flawless finishes on all restored windows. His attention to traditional painting techniques for period properties guarantees durable, authentic results. He ensures every project meets the highest standards of both protection and aesthetic appeal.
Jake Hallett
Carpentry Specialist
Jake combines modern skills with traditional techniques after transitioning from UPVC to heritage window work. His carpentry expertise delivers precise repairs and installations. He rapidly mastered period window nuances, becoming a key team member for complex restoration projects requiring specialist woodworking skills.
Questions
What areas do you cover?
We operate across London and the South East, handling projects from Tunbridge Wells to Eastbourne and Surrey to Maidstone. Our team regularly works on properties in conservation areas and listed buildings throughout our service region.
Can you retain original window appearance?
Yes, our 10-12mm double glazed units maintain original window profiles. We preserve architectural details while improving efficiency, making retrofitted windows indistinguishable from originals in Victorian, Georgian, and other period properties.
How do you handle rotten window frames?
We use window care resin system and traditional carpentry to repair rotten frames. This involves removing decayed timber, splicing in new wood, and applying resin treatments that restore structural integrity while maintaining original appearance and character.
What's involved in a typical installation?
The process includes removing sashes, replacing single glazing with slimline units, repairing frames, draught sealing, and repainting. Most projects take 1-7 days depending on scale, with minimal disruption to property occupants during works.
Do you offer guarantees?
All our work includes comprehensive guarantees covering materials and workmanship. Double glazing units come with specific warranties, and resin repairs include long-term performance assurances reflecting our confidence in lasting results.
Can you match existing window details?
Yes, we specialise in replicating period features including mouldings, glazing bars, and decorative elements. Our bespoke joinery service ensures new installations perfectly match existing architectural details in both residential and commercial properties.
Reviews (1)
Leonie Apte
Dec 21, 2020
Report
We cannot recommend this company highly enough. Graham and his team are wonderful to work with. They are highly skilled and professional and refurbished all our windows beautifully. They were then painted brilliantly by Tony. We have subsequently had them back to fit new utility doors and again the work and aftercare has been outstanding.
