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Business Details
47 Years
experience
High-Security Windows & Doors in Uxbridge
Capital Windows has been a trusted name in the fenestration industry for over 45 years, specialising in the manufacture and installation of high-security, energy-efficient windows and doors. As a family-run business based in Uxbridge, we combine decades of expertise with a commitment to quality, offering tailored solutions for residential and commercial properties. Our team prioritises customer satisfaction, ensuring every product meets rigorous standards while adhering to the latest regulations. We are proud members of the Glass and Glazing Federation and the Conservatory Association, providing insurance-backed guarantees to protect your investment. With a comprehensive range of products from leading brands, we deliver innovative designs that enhance both aesthetics and functionality.

Our Fensa-registered status underscores our dedication to compliance and excellence in every project. Whether you require bespoke aluminium windows or durable uPVC doors, our knowledgeable team guides you through every step. We pride ourselves on exceptional service, from initial consultation to final installation, ensuring a seamless experience for every client. Our testimonials reflect our reputation for reliability, competitive pricing, and professional support, making us a preferred choice for local and regional customers. With flexible appointment options and a dedicated showroom, we remain accessible and responsive to evolving customer needs.
Services
Bi-folding Doors Sliding Doors Entrance Doors Aluminium Windows uPVC Windows
Details
  • Year established: 1979
Highlights and features
  • We have over 45 years of experience in the fenestration industry.
  • Our products are Fensa-registered and compliant with latest regulations.
  • We are a family-run business with a local focus and national reputation.
  • We offer insurance-backed guarantees for all our installations.
  • Our product range includes leading brands and bespoke design options.
Associations and certifications
  • FENSA
  • Glass and Glazing Federation
  • The Conservatory Association
What people say
Saving money on heating Exceptional service Competitive pricing Friendly assistance Feel secure
Services
Bi-folding Doors
Our bi-folding doors combine sleek design with robust security, offering seamless transitions between indoor and outdoor spaces. Available in aluminium or uPVC, they feature thermal efficiency and low-maintenance durability. Tailored to your propertys style, these doors enhance natural light and property value while meeting strict energy compliance standards.
Aluminium Windows
Crafted for modern and traditional properties, our aluminium windows provide slim frames, superior insulation, and long-lasting performance. Customisable in colour and finish, they integrate advanced locking systems for security. Backed by insurance guarantees, they ensure energy efficiency and compliance with building regulations.
Entrance Doors
Our entrance doors offer high-security composite options with multi-point locking systems and thermal efficiency. Designed to enhance kerb appeal, they come in various styles and finishes. Fensa-registered installations ensure compliance, while insurance-backed guarantees provide added peace of mind.
uPVC Windows
Durable and cost-effective, our uPVC windows feature A-rated energy efficiency, noise reduction, and minimal upkeep. Available in casement or sash designs, they include secure locking mechanisms and are Fensa-certified. Ideal for upgrading older properties with modern, energy-saving solutions.
Smart Door Locks
The AK Touch Secure system offers keyless entry via app control, keypad, or voice commands. Compatible with Alexa and Google Home, it includes manual override and real-time notifications. Designed for residential and commercial use, it enhances security without compromising aesthetics.
Questions
What types of windows and doors do you offer?
We provide bi-folding doors, aluminium and uPVC windows, entrance doors, and smart locking systems, all tailored to your property’s needs.
Are your products energy efficient?
Yes, all our windows and doors meet Fensa standards for energy efficiency, reducing heat loss and lowering utility bills.
Do you offer guarantees on installations?
We provide insurance-backed guarantees for all installations, ensuring long-term reliability and compliance with regulations.
Can I visit your showroom?
Our Uxbridge showroom is open Monday-Friday 10am-5pm and Saturday mornings by appointment for product demonstrations.
Are you a family-run business?
Yes, we are a family-run company with over 45 years of experience in the fenestration industry.
Do you serve commercial clients?
Yes, we supply and install windows and doors for commercial properties, including bespoke solutions for modern developments.
Reviews (3)
Deborah Cairns
Jun 02, 2018 Report
I cannot recommend these folks highly enough for both their initial service and aftercare service. My (now elderly) Mother had various windows a porch, French doors etc installed by them over a number of years. Always delighted by the quality and service. Recently, My mother has on 3 occasions damaged locks by endeavouring to force incorrect keys into them. When I've called them( and usually spoken with Julie who is wonderfully customer centric) they have dispatched an equally wonderful engineer rapidly to assist. Totally honest and despite this being an issue caused by the client have not made any unnecessary charges. This company truly have the customer at the heart of everything they do.
Vishal Lu
Jan 05, 2017 Report
If you are considering using this company to replace your windows and doors, i would recommend using another! They do not appreciate turning up is the most important part of the job! Poor service from Eamon the surveyor.
Fares Bou-Daher
Dec 08, 2015 Report
We at Skyfix & Co. Ltd. have been ordering and fitting aluminium Bi-folding sliding doors made to measure specifically manufactured by Capital Windows for a number of years. Capital windows have always not just met our expectations but exceeded them on every occasion. Peter & Tom and team are always at hand to assist with technical information and on the factory floor all goes according to schedule. Will continue doing business with Capital Windows and do recommend them for many more products.