Business Details
Emergency
services
Expert Sash Window & Door Services in London
Box Sash London Joinery has been serving London and the South for over three decades, specialising in the repair, restoration, and installation of traditional timber sash windows and doors. Our team of highly skilled joiners and carpenters combines modern techniques with time-honoured craftsmanship to deliver bespoke solutions tailored to each client's needs. As registered members of FENSA and GGFi, we guarantee all work undertaken, ensuring complete peace of mind for homeowners.With workshops based in North London, we operate six days a week, offering emergency repair services within 24 hours. Our expertise spans draught proofing, glass glazing, and purpose-made joinery, preserving architectural heritage while enhancing energy efficiency. This extensive experience positions us as trusted specialists in maintaining and upgrading period properties across conservation areas and listed buildings.
Services
Sash Window Installation
Window Restoration
Draught Proofing
Joinery Doors
Emergency Repairs
Highlights and features
- We have over 30 years of experience in sash window restoration.
- Our team are registered members of FENSA and GGFi.
- We offer 24-hour emergency repair services.
- We provide bespoke draught proofing solutions.
- Our craftsmen combine traditional techniques with modern technology.
Associations and certifications
- FENSA
- GGFi
What people say
Fantastic appeal
After sales service
First rate work
Delighted with result
Excellent work
Services
Sash Window Installation
We professionally install traditional cord hung, spiral hung, and casement windows to precision standards. Our installations comply with all building and health and safety regulations, ensuring durability and aesthetic consistency with period properties. Services include bay windows, vertical/horizontal sliding sashes, and fixed sashes.
Window Restoration
Specialists in restoring sash and casement windows for listed buildings and conservation areas. We refurbish existing windows to preserve architectural integrity while improving functionality. Techniques include rebalancing sashes, replacing cords, reglazing, and installing draught seals without altering original aesthetics.
Draught Proofing
We eliminate draughts in period windows using premium draught excluders and seals. This process maintains window appearance while reducing heat loss, noise, and carbon footprint. Benefits include lower energy bills, quieter rooms, and improved thermal efficiency without compromising historical authenticity.
Joinery Doors
Custom-manufactured doors including timber, French, folding, PVCU, and aluminium bi-folding designs. Crafted to match original architectural styles with 20-year guarantees. Incorporates modern security features and energy-efficient technology while maintaining traditional craftsmanship standards.
Emergency Repairs
Urgent repair service for broken sash cords, glass, and window components within 24 hours. Available seven days a week, covering security lock installations, pulley replacements, and sash rebalancing. Ensures immediate safety and property protection with minimal disruption.
Questions
What areas do you cover?
We serve London and surrounding South England regions, specialising in period property window and door restoration.
Do you offer emergency repair services?
Yes, we provide urgent repairs within 24 hours for broken sash cords, glass, and security issues across London.
Are your services FENSA registered?
Yes, we are FENSA and GGFi registered, ensuring all work meets building regulations and homeowner protection standards.
Can you restore listed building windows?
Yes, we specialise in conservation area and listed building window restoration without compromising architectural integrity.
What payment methods do you accept?
Please contact our office directly for payment arrangement details as this information wasn't specified in our materials.
Reviews (1)
Marie Dumeau
Nov 12, 2017
Report
Box Sash have done a good job a few month ago replacing a wooden panel on a door and fitting shelves so we wanted to work with them on other things in the flat as we always try to give business to local companies... So we all agreed on the next job that needed to be done (wardrobes doors), it was all OK and they said they could do whatever we wanted! So they came round to take measurements and said that they would give us a call and send us the quotation in the next couple of days. Almost 3 weeks later, no news and no answers to any of our texts or emails... We finally manage to speak to someone
