Business Details
Emergency
services
Expert Sash Window & Door Services in London
Box Sash London Joinery has been a trusted name in the sash window and door industry for nearly three decades. Our expertise lies in the meticulous restoration, installation, and draught proofing of traditional timber-framed sash windows and doors, preserving London's architectural heritage while meeting modern standards. With workshops based in North London, we combine time-honoured craftsmanship with contemporary techniques to deliver precision-engineered solutions.Our team of skilled joiners and carpenters brings extensive experience to every project, ensuring compliance with FENSA and GGFi regulations for homeowner protection. We pride ourselves on offering a comprehensive service, from bespoke joinery to emergency repairs, all backed by a full guarantee. Our commitment to quality, energy efficiency, and customer satisfaction has made us a preferred choice for residential clients across London and the South.
Services
Sash Window Installation
Sash Window Restoration
Draught Proofing
Glass Glazing
Emergency Repairs
Joinery Doors
Double Glazed Windows
Project Management
Repairs
Window Replacement
Highlights and features
- We offer over 30 years of experience in sash window restoration and joinery.
- All work is fully guaranteed for complete peace of mind.
- Registered members of FENSA and GGFi for homeowner protection.
- Skilled and time-served joiners and carpenters ensure precision craftsmanship.
- Open 6 days a week with emergency repair services available.
Associations and certifications
- FENSA
- GGFi
What people say
Fantastic craftsmanship
Timely service
Effective draught proofing
Professional team
Reliable after-sales
Services
Sash Window Installation
We professionally install traditional and modern sash windows to precise specifications, ensuring compliance with building regulations. Our process prioritises energy efficiency, security, and aesthetic continuity with your property's heritage. Each installation is carried out by skilled craftsmen for lasting durability.
Sash Window Restoration
Specialising in restoring historic sash windows, we rejuvenate timber frames to their original condition. Services include rebalancing sashes, replacing cords, and repairing rot-damaged components. This preserves architectural integrity while enhancing functionality and thermal performance for listed buildings and conservation areas.
Draught Proofing
Our draught-proofing solutions eliminate heat loss and noise infiltration through sash windows. Using premium seals and excluders, we maintain operational smoothness without altering aesthetics. This cost-effective service reduces energy bills and improves indoor comfort while preserving period features.
Glass Glazing
We supply and fit single, double, and toughened glass tailored to sash windows. Services include repair, replacement, and secondary glazing for noise reduction. Our solutions balance security, thermal efficiency, and visual consistency with original window designs.
Emergency Repairs
Available seven days a week, our emergency service addresses broken glass, snapped cords, and security vulnerabilities within 24 hours. Rapid response teams ensure immediate safety and weatherproofing, minimising disruption to your home or business environment.
Questions
What services does Box Sash London Joinery offer?
We specialise in sash window installation, restoration, draught proofing, glass glazing, emergency repairs, and bespoke joinery for doors and windows across London.
Are your services available in emergencies?
Yes, we offer 24-hour emergency repairs for broken glass, snapped cords, and security issues, with a 7-day response guarantee.
Do you guarantee your work?
All our work is fully guaranteed, ensuring peace of mind and compliance with FENSA and GGFi homeowner protection standards.
Can you work on listed buildings?
Yes, we specialise in restoring sash windows for listed properties and conservation areas, maintaining architectural integrity while improving functionality.
How do you ensure energy efficiency?
Our draught-proofing systems and double-glazed solutions reduce heat loss and noise, enhancing energy efficiency without compromising window aesthetics.
Reviews (2)
Catherine Suttle
Jul 28, 2023
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We had a new wooden front door fitted to replace our old uPVC one. Communication with the company has been really good throughout, the door fitting was completed on time and they did exactly what they said they would do, and did it well. Highly recommended.
Marie Dumeau
Nov 12, 2017
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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
