
Project Showcase
Discover the difference Harrington Windows makes. Explore detailed case studies of our installations across London and the South East, highlighting our craftsmanship, technical expertise, and client satisfaction.
See Our Work in Detail
Our portfolio provides an in-depth look at the challenges, solutions, and results of our window and door projects. Each case study demonstrates our commitment to bespoke solutions, meticulous installation, and exceeding client expectations, whether for period restorations, modern upgrades, or commercial developments.
Filter by window type below or browse all projects to see how we transform properties with enhanced aesthetics, energy efficiency, security, and comfort.
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Featured Projects

Edwardian Sash Window Restoration
Full restoration and draught-proofing of original timber sash windows for a listed Edwardian property in the Highgate conservation area. Focused on preserving historical aesthetics while significantly improving thermal performance and operability.

Victorian Sash Window Refurbishment
Complete refurbishment of original Victorian sash windows in a prestigious townhouse. The project focused on retaining the historic character while improving insulation and functionality.

Georgian Townhouse Sash Window Restoration
Historical restoration of early Georgian sash windows in a protected townhouse. The project involved exact replication of period details while incorporating subtle modern improvements.

Classic Sash Window Installation for Period Property
Design and installation of new sash windows for a period property extension, carefully matching the style of the original windows while incorporating modern thermal performance.

Sliding Sash Window Overhaul for Chelsea Townhouse
Comprehensive overhaul of original sliding sash windows in a luxury Chelsea townhouse, focusing on improved operation, enhanced thermal efficiency, and noise reduction from the busy streets.

Authentic Georgian Bar Timber Windows
Replacement of failing single-glazed windows with bespoke timber windows featuring authentic Georgian bars. The design replicated the original proportions precisely for a Grade II listed property, incorporating slimline double glazing.

Bespoke Timber Casement Windows
Crafted and installed bespoke timber casement windows for a unique countryside property extension. The design needed to blend seamlessly with the existing structure while offering modern performance benefits.

Flush Sash uPVC Windows for Cottage
Installation of modern Flush Sash uPVC windows in a charming cottage, replacing old timber frames. The goal was to retain the traditional cottage aesthetic with a low-maintenance, energy-efficient solution.

Georgian Style Window Replacement for Colonial Revival Home
Complete replacement of inappropriate modern windows with authentic Georgian-style timber units for a 1920s Colonial Revival property, restoring the home's architectural integrity.

Georgian Bay Windows for Victorian Terrace
Bespoke Georgian-style bay windows designed and installed for a Victorian terrace home, replacing deteriorated original windows while improving energy efficiency and security.

Georgian Flush Casement Windows for Country Cottage
Design and installation of bespoke Georgian-style flush casement windows for a historic cottage, returning the property to its original appearance after inappropriate modern replacements.

Classic Georgian Six-Over-Six Windows for Period Farmhouse
Restoration and replacement of Georgian six-over-six windows for a listed 18th-century farmhouse, combining traditional craftsmanship with modern performance enhancements.

Modern uPVC Windows for Family Home
Complete replacement of outdated aluminum windows with energy-efficient uPVC windows for a contemporary family home, focusing on thermal performance and reduced maintenance.

Contemporary uPVC Windows for Suburban Home
Full replacement of original single-glazed windows with energy-efficient anthracite grey uPVC windows for a 1970s suburban home, creating a contemporary appearance and improved comfort.

Heritage-Style uPVC Windows for Period Cottage
Installation of heritage-style uPVC windows with authentic wood grain finish for a period cottage, combining traditional appearance with modern performance and low maintenance.

A-rated uPVC Windows for Energy-Efficient Renovation
Complete window replacement for a comprehensive energy-efficiency renovation, featuring high-performance uPVC frames and triple glazing to achieve exceptional thermal ratings.

Colored uPVC Windows for Contemporary Home
Installation of contemporary anthracite grey uPVC windows with sleek slim frames for a modern home renovation, creating a stylish architectural statement while delivering excellent performance.

Oak Timber Windows for Country House Renovation
Bespoke European oak timber windows designed and crafted for a comprehensive country house renovation, combining traditional craftsmanship with modern performance standards.

Painted Timber Windows for Victorian Villa
Design and installation of traditional painted timber windows for a Victorian villa restoration, focusing on period authenticity combined with improved thermal and acoustic performance.

Acoustic Secondary Glazing for Period Property
Installation of high-performance acoustically-enhanced windows for a property in Crystal Palace affected by road noise, creating a quieter, more comfortable living environment.

Tilt & Turn Windows for Contemporary Townhouse
Installation of sleek aluminum Tilt & Turn windows for a newly renovated contemporary townhouse, providing clean architectural lines and maximum functionality.

Tilt & Turn Windows for Modern Apartment Complex
Supply and installation of high-performance uPVC Tilt & Turn windows for a residential apartment complex, providing excellent thermal performance and easy maintenance for residents.

Flush Sash Windows for Barn Conversion
Installation of oak-effect Flush Sash windows for a converted barn property, balancing rural character with contemporary performance requirements.

Contemporary Flush Sash Windows for Townhouse
Installation of modern anthracite grey Flush Sash windows for a renovated townhouse, creating a contemporary aesthetic while respecting the property's period proportions.

Get 20% Off your First Project with Harrington
Ready to transform your property with beautiful, energy-efficient windows? Contact us to discuss your project requirements and receive a free, no-obligation quote.
Questions About Our Projects?
Our team is happy to discuss our past projects and how we can apply similar solutions to your property.
Frequently Asked Questions
Common questions about our window installation projects and services
Quality is at our core
At Harrington Windows, we partner with accredited suppliers who meet high industry standards, ensuring our products offer superior performance, durability, and safety. This commitment means you can trust your windows and doors are built to last.
FENSA-Approved Installer
We're registered under FENSA, meaning every replacement window or door we install meets or exceeds building regulations. You'll receive a FENSA certificate upon completion as proof that your installation is fully compliant with UK building standards – covering critical factors like thermal performance and structural safety.
Visit FENSA-Approved Installer website