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"Outstanding service from initial consultation to final installation. Our new sash windows have transformed our Kensington home's appearance while significantly improving warmth and comfort."
Charlotte & Robert Wilson
Kensington
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Kensington, London Sash Window Specialists
Sash Windows in Kensington, London
Transform your Kensington home with draught-free, secure sash windows that combine authentic period style with modern performance, cutting heating costs by up to 40%
⭐⭐⭐⭐⭐Rated 4.9/5 by Kensington customers
10 Year Guarantee
Conservation Approved
Sash Windows for Kensington, London Homes
Local Specialists in Period Window Design
Our premium sash windows are expertly designed for Kensington properties, combining authentic period elegance with cutting-edge performance features that perfectly complement the architectural heritage found throughout Kensington, London.
With over 25 years of experience working with Stucco-fronted Victorian terraces and grand Italianate architecture., our certified sash window specialists understand the unique requirements of homes in Kensington. We're fully approved for Extensive conservation areas with strict guidelines for window modifications.
Every sash window installation in Kensington is backed by our comprehensive 35-year guarantee and installed by our own local, fully-qualified installation teams—never subcontractors—ensuring consistent, premium quality results.
Authentic Period Aesthetics
Perfect replication of traditional sash windows for Kensington homes
Local Kensington Expertise
Tailored solutions for Kensington, London's unique property styles
Perfect for Conservation Areas
Approved designs for Kensington's protected neighborhoods
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Bespoke sash windows for Kensington
Tailored to your property's unique character
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Why Choose Harrington for Your Kensington Sash Windows
Our Expertise & Credentials
Industry Certified
Our Kensington installations are backed by FENSA certification, Glass and Glazing Federation membership, National Trading Standards approval, and Installsure 10-Year insurance-backed guarantees.
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Energy Performance
Our sash windows achieve A+ energy ratings - the highest available for any window product. This high-performance glazing can reduce heating costs by up to 40% for Kensington homeowners.
A+ Rated Windows
25+ Years Experience
Our master craftsmen have been installing sash windows in Kensington for over 25 years, with specific experience in local conservation areas and period properties.
Excellent
Trustpilot
TrustpilotLocal Kensington Knowledge
Harrington Windows is the most highly rated sash window specialist in Kensington, London, with unmatched knowledge of local architectural styles and conservation requirements. Our team includes Kensington residents who understand the specific needs of properties in this area.
Conservation area approved designs
Dedicated Kensington installation team
Award-winning customer service
Sash Window Details for Kensington, London Properties
Crafted With Precision for Local Homes
Authentic Design Features for Kensington Homes
Our sash windows are meticulously designed to replicate the traditional timber windows found in Kensington, London while incorporating modern materials and techniques for superior performance.
1
Slim 35mm Midrail
Elegant, slim profile that maximizes glass area while maintaining authentic proportions.
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Mechanical Butt Joints
Traditional joinery techniques that create authentic corner details without visible welding.
3
Seamless Sash Horns
Optional decorative sash horns that replicate traditional timber window details.
Traditional Styling
Crafted for Kensington, London homes
Sash Windows Gallery in Kensington, London
Recent Kensington Sash Window Installations
Browse our portfolio of recently completed sash window installations in Kensington and surrounding areas. Each project showcases our commitment to quality craftsmanship and attention to detail for local properties.
Premium timber sash windows installed in Kensington home
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A-rated energy efficient sash windows for Kensington, London property
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Traditional box sash windows enhancing Kensington period home
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Modern sash windows fitted in Kensington, London town house
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Georgian style sash windows for Kensington conservation property
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High-security sash windows with heritage appeal in Kensington, London
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Authentic sliding sash windows in Kensington Victorian home
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Double-glazed sash windows for Kensington, London period property
Frequently Asked Questions About Kensington Sash Windows
Everything you need to know
Find answers to common questions about sash windows installation and replacement in Kensington, London
Still have questions?
Our local Kensington window experts are here to help you with any specific questions or requirements about sash windows for your property.
Kensington Customer Testimonials
Hear from our satisfied clients
"The quality of Harrington's sash windows is exceptional. They've perfectly matched our period property's style while providing modern insulation. Couldn't be happier with the results and the professional installation."
William Thompson
Kensington, London
"After researching several companies, we chose Harrington Windows for our conservation area property in Kensington. Their knowledge of local requirements and attention to detail was outstanding. The windows look beautiful."
Victoria & Jonathan Harris
Kensington
4.9 out of 5
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4.8 out of 5
No obligation • Free consultation
Sash Window Specialists in Kensington, London
Find Us in Kensington
Our sash window installation services cover all areas in and around Kensington. We provide free consultations and on-site measurements throughout Kensington, London.
Service Area
Kensington, London and surrounding areas
Hours
Mon-Fri: 9am-5pm
Sat: 10am-4pm
Areas We Serve in London
Our Sash Window Services Near Kensington
We provide our premium sash window services throughout London, including Kensington and the following nearby areas:
RichmondTW9ChiswickW4EalingLondonChelseaSW3FulhamLondonHammersmithLondonNotting HillLondonActonLondonShepherds BushLondonTwickenhamLondonPutneyLondonWimbledonSW19Ealing BroadwayLondonBarnesLondonChiswick MallW4Maida ValeLondonPaddingtonLondonSt Johns WoodLondonKensal RiseLondonHammersmith GroveLondonKew GardensLondonBeaconsfieldLondonGerrards CrossLondonHarrow on the HillLondonPinnerLondonNorthwoodLondonUxbridgeLondonWembleyLondonRuislipLondonBrentfordLondonHolland ParkLondonKnightsbridgeLondonBelgraviaLondonMayfairLondon
Not seeing your area?
We serve many more locations in and around London. Contact us to check if we cover your specific area.
Ready to Transform Your Kensington Home?
Get started with a free consultation and quote. Our Kensington experts are ready to help you find the perfect sash windows for your home.
No-obligation quotes
Free Kensington home consultation
10 Year Guarantee