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Business Details
8 Years
experience
Your Trusted Timber Window & Door Specialists in London
Established in 2018, Joint Joinery operates as a FENSA-registered specialist in timber-based construction solutions. Our expertise lies in crafting and installing bespoke windows, doors, and conservatories that combine traditional craftsmanship with modern double-glazing technology. All installations adhere strictly to UK building regulations, verified through our FENSA accreditation (number 33242). Our team of qualified installers ensures every project meets exact specifications, with post-installation client verification as standard.

We maintain full liability insurance coverage and prioritise direct tradesperson engagement over sales intermediaries. Our commitment to quality is evidenced by numerous client testimonials praising our precision, reliability, and ability to restore period properties while enhancing thermal efficiency. With experience in both residential and commercial sectors, we offer comprehensive timber solutions from initial consultation to final installation.
Services
Timber Windows Doors Conservatories Sash Windows Bespoke Joinery
Details
  • Year established: 2018
Highlights and features
  • FENSA-registered with accreditation number 33242
  • Fully qualified and trustworthy installation team
  • Full liability insurance coverage
  • Combines 21st-century technology with traditional methods
  • Direct tradesperson engagement - no sales intermediaries
Associations and certifications
  • FENSA
What people say
Lovely box sash windows Excellent service Good value Craftsmanship was excellent Punctual and polite
Services
Timber Windows
We manufacture and install custom timber windows meeting BS 6206 standards. Our double-glazed units feature toughened glass with optional patterned finishes. Traditional box sash designs incorporate spiral balances or lead weights, while draught-proofing ensures energy efficiency. All windows comply with current thermal performance regulations through FENSA-certified installation processes.
Doors
Our bespoke doors combine security and aesthetics using hardwood or softwood materials. We replicate original designs for conservation properties while upgrading to modern double-glazing standards. Installation includes security locking systems and decorative hardware options. The process maintains structural integrity while enhancing thermal performance and security features for both residential and commercial properties.
Conservatories
Custom-built timber conservatories integrate traditional joinery with modern insulation. We construct box frames and sliding sashes using period-appropriate mouldings while incorporating 21st-century double-glazing technology. The structures maintain architectural authenticity while achieving contemporary energy efficiency standards through FENSA-compliant installation methods.
Sash Windows
Specialist restoration and replacement of sash windows using original construction techniques. We reinstate period features in properties previously converted to PVCu systems, maintaining historical accuracy while upgrading to double-glazed units. The process includes draught-proofing and security enhancements without compromising traditional aesthetics or structural integrity.
Bespoke Joinery
Tailored timber solutions for unique architectural requirements. Our craftsmen replicate original mouldings and designs for conservation projects while incorporating modern materials. Services include custom window and door manufacturing, period feature restoration, and specialist joinery work that balances heritage preservation with contemporary performance standards.
Questions
Are you FENSA-registered for window and door installations?
Yes, we hold FENSA accreditation number 33242 for all double-glazed window and door installations, ensuring compliance with UK building regulations.
What timber types do you work with?
We work with hardwood, softwood, and any nominated timber species to meet specific project requirements and client preferences.
Do you serve areas outside London?
While based in London, we consider projects across the UK where specialist timber joinery expertise is required for conservation or bespoke projects.
Can you restore period windows to original condition?
Yes, we specialise in replicating original mouldings and designs to restore period properties while upgrading to modern double-glazing standards.
What guarantees do you offer?
All work complies with current building regulations and comes with our guarantee of proper installation, backed by full liability insurance coverage.