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Business Details
40 Years
experience
Trusted Aluminium Windows and Doors Manufacturer in Watford
Established in 1986, A Plus Windows & Doors has evolved into one of the UK's leading aluminium window and door fabricators, serving residential and commercial sectors with over 37 years of combined expertise. Our commitment to quality is demonstrated through our investment in advanced manufacturing technology, including five CNC machines and automated saws across two production sites. We specialise in bespoke fabrication of market-leading aluminium systems, offering comprehensive technical support, competitive pricing, and reliable delivery.

Our dual manufacturing facilities in Watford and Sandy enable nationwide service with dedicated focus on trade residential and commercial project markets. With a team of 45 skilled fabricators and continuous investment in innovation, we maintain 100% production uptime while delivering energy-efficient, sustainable solutions tailored to client specifications.
Services
Aluminium Doors Aluminium Front Doors Bi-Fold Doors Curtain Wall Commercial Glazing Residential Windows Shopfronts Rooflights Sliding Doors Windows
Details
  • Year established: 1986
Highlights and features
  • We have over 37 years of combined experience in aluminium fabrication
  • Our dedicated technical teams provide full product support
  • We operate 5 CNC machines and automated saws for precision manufacturing
  • Our dual manufacturing sites ensure nationwide delivery efficiency
  • We offer competitive pricing with guaranteed on-time deliveries
Services
Aluminium Windows
We manufacture precision-engineered aluminium windows tailored to residential and commercial requirements. Our product range includes casement, parallel opening, and sliding window systems with thermal efficiency and security certifications. Each window is fabricated to exact specifications using market-leading systems from Sapa and Technal, ensuring compatibility with modern building standards while maintaining aesthetic appeal.
Bi-Fold Doors
Our bi-fold door solutions combine sleek design with functional performance for both domestic and commercial applications. Using Origin and Crown systems, we create seamless transitions between indoor and outdoor spaces with multi-point locking mechanisms and weather-resistant seals. Custom configurations accommodate various aperture sizes while maintaining structural integrity and thermal efficiency.
Curtain Walling
We supply and fabricate high-performance curtain walling systems for commercial buildings using Sapa ST11 and Technal MX profiles. Our solutions provide structural stability with thermal breaks, acoustic insulation, and design flexibility for modern architectural projects. Each system undergoes rigorous testing to meet safety standards while delivering aesthetic continuity across building exteriors.
Commercial Glazing
Our commercial glazing services cater to retail, office, and industrial developments with comprehensive solutions from initial design to installation support. We specialise in high-traffic door systems, shopfronts, and structural glazing that balance security with visual appeal. Technical teams provide thermal calculations and site-specific recommendations to ensure compliance with building regulations.
Heritage Steel Windows
We produce heritage-style steel windows that replicate traditional aesthetics while incorporating modern performance features. These windows meet conservation area requirements through slim profiles and period-appropriate detailing, combined with contemporary thermal efficiency and security enhancements. The range includes both exterior and interior applications for residential and commercial refurbishment projects.
Questions
What types of aluminium products do you manufacture?
We specialise in windows, doors, curtain walling, shopfronts, and rooflights for residential and commercial applications using leading systems from Sapa, Technal, and Origin.
Do you supply directly to homeowners?
We operate as a trade-only supplier but welcome self-builders and experienced DIYers who can provide detailed architectural plans for bespoke fabrication.
What geographical areas do you serve?
Our dual manufacturing facilities in Watford and Sandy enable nationwide delivery across the UK with competitive lead times for both residential and commercial projects.
Can you provide technical support for installations?
Yes, our dedicated technical team offers full support including thermal calculations, installation guidance, and site visits to ensure proper product application.
What quality standards do your products meet?
Our manufacturing processes adhere to industry standards with regular quality checks, though specific accreditations aren't listed in our current documentation.
How do you handle large commercial projects?
We provide comprehensive support from initial design through delivery, including technical specifications, project management coordination, and after-sales service for commercial developments.