Business Details
28 Years
experience
Premium Windows & Doors in Middlesbrough
At Celestial Windows, we have dedicated over 25 years to perfecting the craft of window, door, and conservatory manufacturing and installation across the North East. As a family-run business established in 1998, our commitment to quality and customer satisfaction remains unwavering. We pride ourselves on delivering products that combine durability, security, and energy efficiency, backed by a 10-year insurance-backed guarantee. Our team of highly trained professionals ensures minimal disruption during installation, prioritising precision and care from initial consultation to completion.With a state-of-the-art manufacturing facility and a showroom showcasing our full range, we offer tailored solutions that meet both aesthetic and functional needs. Our expertise in addressing local challenges, such as flood-prone areas, demonstrates our deep-rooted understanding of regional requirements. Thousands of returning customers attest to our dedication to excellence, making us a trusted partner for enhancing homes with bespoke, high-performance installations.
Services
uPVC Casement Windows
Composite Doors
Bi-Folding Doors
Conservatories
Icotherm Roof Systems
French Doors
Patio Doors
Panel Doors
Orangeries
Garden Rooms
Details
- Year established: 1998
Highlights and features
- We have over 25 years of experience in window and door manufacturing.
- Our products come with a 10-year insurance-backed guarantee.
- We offer energy-efficient A-rated glass as standard.
- Our local expertise ensures tailored solutions for the North East.
- We provide a comprehensive showroom experience with on-site manufacturing.
Associations and certifications
- FENSA
What people say
Excellent service
Great quality
Highly efficient
Second to none
Outstanding staff
Services
uPVC Casement Windows
Our uPVC casement windows combine energy efficiency with modern design, featuring multi-point locking systems for enhanced security. Available in a range of colours and styles, they suit both traditional and contemporary homes. These windows are engineered to reduce heat loss and noise pollution while maintaining durability in extreme weather conditions.
Composite Doors
Composite doors offer superior strength and insulation, featuring a timber core with weatherproof outer layers. They resist warping, fading, and intrusion, ensuring long-term performance and home safety. Customisable finishes allow seamless integration with any property's aesthetic while maintaining high security standards.
Conservatories
Our conservatories create versatile living spaces with maximum natural light and thermal efficiency. Designed to match your home's architecture, they feature durable uPVC frames and advanced glazing. Options include Edwardian, Victorian, and lean-to styles, all built for year-round comfort.
Icotherm Roof Systems
Icotherm roofs transform conservatories with insulated timber construction, regulating temperature and reducing energy costs. They comply with UK building regulations and offer a 10-year guarantee. These eco-friendly roofs provide year-round usability without structural modifications to existing frames.
Bi-Folding Doors
Bi-folding doors create seamless indoor-outdoor transitions with sleek, space-saving designs. Constructed from durable materials, they feature advanced weatherproofing and security mechanisms. Available in custom sizes and finishes to complement modern and traditional properties alike.
People
Alan Sewell
Owner
Alan Sewell founded Celestial Windows in 1998 and has led its growth into a trusted North East window and door specialist. With over 25 years of industry experience, he prioritises quality craftsmanship and customer satisfaction. His leadership ensures the company maintains high standards in product innovation and service delivery.
Questions
What services does Celestial Windows offer?
We specialise in uPVC windows, composite doors, conservatories, bi-folding doors, and Icotherm roof systems, all manufactured and installed to the highest standards.
Do you provide guarantees on installations?
All our installations come with a 10-year insurance-backed guarantee via FENSA, ensuring long-term peace of mind for our customers.
Can I finance my window or door installation?
Yes, we offer affordable finance options. Contact us for details on spreading the cost of your home improvement project.
How long does a conservatory installation take?
Most conservatory installations are completed within 2-3 weeks, depending on size and complexity, with minimal disruption to your home.
Do you serve areas outside Middlesbrough?
We operate across Teesside and the wider North East region, providing the same high standards of service to all our local customers.
Can I upgrade an existing conservatory roof?
Yes, our Icotherm warm roof system can be retrofitted onto most existing conservatory bases for improved insulation and year-round usability.
Reviews (1)
Mike L.
Mar 24, 2021
Report
Outstanding service from beginning to end. After considering several companies, we chose Celestial for the installation of our new conservatory, and they provided an excellent product at a competitive price. The entire process, from the initial discussion to design and installation, proceeded seamlessly. Based on our positive experience, I would highly recommend them.
