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Your Trusted Home Improvement Partner in Chelmsford
Established with over 50 years of combined experience in the home improvement industry, Essex Window Design prioritises customer satisfaction and retention. Our team operates entirely in-house, handling every aspect from sales to installation without subcontracting. As a Certass-registered company, we provide a 10-year insurance-backed guarantee, ensuring long-term confidence in our workmanship. We offer a comprehensive range of products, including 'A' rated energy-efficient windows, bi-fold doors, conservatories, and roofline solutions, available in multiple finishes such as white wood grain and Irish oak.

Our commitment to quality is reflected in our use of high-grade materials and rigorous quality control processes. With actual installations available for viewing, we combine extensive product knowledge with personalised guidance to support customers throughout their projects. Our focus on durability, thermal efficiency, and aesthetic appeal ensures solutions tailored to modern and traditional properties alike.
Services
Conservatories Windows Roofline Doors Bi-Fold Doors Roof Lanterns Vertical Sliders
Highlights and features
  • We have over 50 years of combined experience in home improvement.
  • We handle all installations in-house with no subcontracted labour.
  • Our Certass registration ensures compliance with industry standards.
  • We offer 'A' rated energy-efficient windows for improved insulation.
  • A 10-year insurance-backed guarantee covers all our installations.
Associations and certifications
  • Certass
  • Installations Assured
Services
Conservatories
Luxury conservatories designed to expand living space and enhance property value. Available in contemporary and traditional styles, our conservatories feature market-leading workmanship and energy-efficient materials. Tailored to individual specifications, they combine aesthetic appeal with practical functionality for year-round use.
Windows
High-performance PVC-U windows offering improved insulation, security, and noise reduction. Options include casement, tilt-and-turn, and vertical slider designs in a range of colours and finishes. All windows meet current building regulations for energy efficiency.
Bi-Fold Doors
Panoramic bi-fold doors that create seamless transitions between indoor and outdoor spaces. Featuring slim frames and multiple colour choices, these doors maximise natural light and provide a modern aesthetic with low-maintenance durability.
Roofline Products
Durable PVC-U roofline solutions including fascias, soffits, and guttering systems. Designed to withstand harsh weather conditions while maintaining visual appeal. These low-maintenance components protect against water damage and improve a property's exterior finish.
Composite Doors
Secure, thermally efficient composite doors available in multiple styles and colours. Combining traditional aesthetics with advanced engineering, these doors offer enhanced security features and long-lasting performance with minimal upkeep required.
Questions
What services does Essex Window Design offer?
We specialise in windows, doors, conservatories, bi-fold doors, and roofline products. All installations are handled in-house with a focus on quality and energy efficiency.
Are your products energy efficient?
Yes, we provide 'A' rated energy-efficient windows and doors, meeting current building regulations for insulation and thermal performance.
Do you offer guarantees on your work?
All installations come with a 10-year insurance-backed guarantee, ensuring long-term confidence in our products and services.
Are you certified by industry bodies?
We are Certass registered and hold an Installations Assured membership, demonstrating compliance with industry standards and best practices.
Can I view existing installations?
Yes, we have actual installations available for viewing to help you understand the quality and finish of our work.
Do you use subcontractors for installations?
No, all our work is completed by our own experienced team, ensuring consistent quality and direct communication throughout the process.