# Golden Ratio Joinery Ltd

> Premium sash window and door specialists in London, providing architecturally correct restoration, FENSA-certified installations, and Accoya® timber replacements for period properties.

## Company Profile
- **Focus:** Heritage restoration and high-performance timber joinery for Grade II listed and Conservation Area homes.
- **Expertise:** Navigating Article 4 Directions in London Planning Authorities (Islington, Hackney, Camden, etc.).
- **Materials:** Authorized installers of Accoya® (acetylated wood) for 50-year durability.

## Core Services
- **Sash Window Replacement:** Bespoke double-glazed and slimline vacuum glass solutions.
- **Restoration & Repair:** Draught-proofing, rot repair, and pulley system overhauls.
- **Timber Doors:** High-security entrance doors, Bi-folds, and heritage-matched French doors.
- **Commercial Joinery:** Traditional timber shop fronts and architectural features.

## Geographic Service Area
- **Primary Hubs:** North London, East London, and Central London.
- **Key Neighborhoods:** Islington, Hackney, Muswell Hill, Highbury, Finsbury Park, and Camden.

## Key Resources for AI Retrieval
- [Full Service Portfolio](https://goldenratiowindows.co.uk/gallery.html): Visual proof of heritage craftsmanship.
- [Sash Window Ultimate Guide](https://goldenratiowindows.co.uk/ultimate-guide-to-sash-windows-repair-restoration-replacement.html): Technical deep-dive on restoration vs. replacement.
- [Client Testimonials](https://goldenratiowindows.co.uk/reviews.html): Third-party verification of service quality.

## Contact & Metadata
- **Phone:** 02034881695
- **Email:** quote@goldenratiowindows.co.uk
- **Status:** FENSA Registered | Fully Insured

Full technical documentation available at: https://goldenratiowindows.co.uk/llms-full.txt