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Harrington Windows
Showcase of Harrington Windows high-quality casement window installation projects across London and the South East
Explore our Past Projects

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.

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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 - Sash Windows installation project in Highgate, North London by Harrington Windows
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Sash Windows
Highgate, North LondonHeritage

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.

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Victorian Sash Window Refurbishment - Sash Windows installation project in Kensington, West London by Harrington Windows
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Sash Windows
Kensington, West LondonHeritage

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.

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Georgian Townhouse Sash Window Restoration - Sash Windows installation project in Islington, North London by Harrington Windows
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Sash Windows
Islington, North LondonHeritage

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.

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Classic Sash Window Installation for Period Property - Sash Windows installation project in Hampstead, North London by Harrington Windows
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Sash Windows
Hampstead, North LondonHeritage

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.

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Sliding Sash Window Overhaul for Chelsea Townhouse - Sliding Sash Windows installation project in Chelsea, West London by Harrington Windows
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Sliding Sash Windows
Chelsea, West LondonHeritage

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.

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Authentic Georgian Bar Timber Windows - Georgian Windows installation project in Richmond, West London by Harrington Windows
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Georgian Windows
Richmond, West LondonHeritage

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.

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Bespoke Timber Casement Windows - Timber Windows installation project in Newmarket, Cambridge by Harrington Windows
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Timber Windows
Newmarket, CambridgeResidential

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.

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Flush Sash uPVC Windows for Cottage - Flush Sash Windows installation project in St Albans, Hertfordshire by Harrington Windows
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Flush Sash Windows
St Albans, HertfordshireResidential

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.

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Georgian Style Window Replacement for Colonial Revival Home - Georgian Windows installation project in Chiswick, West London by Harrington Windows
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Georgian Windows
Chiswick, West LondonResidential

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.

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Georgian Bay Windows for Victorian Terrace - Georgian Windows installation project in Dulwich, South London by Harrington Windows
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Georgian Windows
Dulwich, South LondonResidential

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.

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Georgian Flush Casement Windows for Country Cottage - Georgian Windows installation project in Cobham, South London by Harrington Windows
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Georgian Windows
Cobham, South LondonHeritage

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.

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Classic Georgian Six-Over-Six Windows for Period Farmhouse - Georgian Windows installation project in Blackheath, South London by Harrington Windows
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Georgian Windows
Blackheath, South LondonHeritage

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.

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Modern uPVC Windows for Family Home - uPVC Windows installation project in Barnet, North London by Harrington Windows
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uPVC Windows
Barnet, North LondonResidential

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.

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Contemporary uPVC Windows for Suburban Home - uPVC Windows installation project in Bromley, South London by Harrington Windows
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uPVC Windows
Bromley, South LondonResidential

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.

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Heritage-Style uPVC Windows for Period Cottage - uPVC Windows installation project in Epping, Essex by Harrington Windows
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uPVC Windows
Epping, EssexResidential

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.

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A-rated uPVC Windows for Energy-Efficient Renovation - uPVC Windows installation project in Walthamstow, East London by Harrington Windows
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uPVC Windows
Walthamstow, East LondonResidential

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.

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Colored uPVC Windows for Contemporary Home - uPVC Windows installation project in Twickenham, West London by Harrington Windows
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uPVC Windows
Twickenham, West LondonResidential

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.

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Oak Timber Windows for Country House Renovation - Timber Windows installation project in Haslingfield, Cambridge by Harrington Windows
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Timber Windows
Haslingfield, CambridgeResidential

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.

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Painted Timber Windows for Victorian Villa - Timber Windows installation project in Blackheath, South London by Harrington Windows
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Timber Windows
Blackheath, South LondonResidential

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.

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Acoustic Secondary Glazing for Period Property - Sash Windows installation project in Crystal Palace, South London by Harrington Windows
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Sash Windows
Crystal Palace, South LondonHeritage

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.

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Tilt & Turn Windows for Contemporary Townhouse - Tilt & Turn Windows installation project in Clapham, South London by Harrington Windows
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Tilt & Turn Windows
Clapham, South LondonResidential

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.

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Tilt & Turn Windows for Modern Apartment Complex - Tilt & Turn Windows installation project in Greenwich, South London by Harrington Windows
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Tilt & Turn Windows
Greenwich, South LondonResidential

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.

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Flush Sash Windows for Barn Conversion - Flush Sash Windows installation project in Wandsworth Common, South London by Harrington Windows
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Flush Sash Windows
Wandsworth Common, South LondonResidential

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.

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Contemporary Flush Sash Windows for Townhouse - Flush Sash Windows installation project in Islington, North London by Harrington Windows
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Flush Sash Windows
Islington, North LondonResidential

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.

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Showing 1-24 of 62 projects
20% off your first window installation project with Harrington Windows

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

Our Accreditations

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