Business Details
28 Years
experience
Your Trusted Partner for Windows, Doors & Conservatories in Middlesbrough
At Celestial Windows, we have been dedicated to crafting and installing high-quality windows, doors, and conservatories for over 25 years. As a family-run business based in Middlesbrough, we pride ourselves on combining local expertise with manufacturing excellence to serve customers across the North East. Our commitment to quality is reflected in our A-rated glass, 10-year insurance-backed guarantees via FENSA, and energy-efficient solutions designed to enhance home security and comfort. With our own state-of-the-art manufacturing facility and showroom, we ensure every product meets rigorous standards while offering tailored designs to suit individual needs.Our team of skilled professionals prioritises minimal disruption during installation, delivering reliable service that has earned us thousands of satisfied customers. By maintaining deep roots in the community and adhering to strict industry regulations, we continue to build trust through transparency, durability, and exceptional customer care.
Services
uPVC Casement Windows
Composite Doors
Bi-Folding Doors
French Doors
Conservatories
Orangeries
Icotherm Roof Systems
Window Replacements
Door Installations
Energy-Efficient Solutions
Details
- Year established: 1998
Highlights and features
- We have been trading over 25 years with thousands of satisfied customers in the North East.
- All installations come with a 10 Year Insurance backed guarantee via FENSA.
- We manufacture our own products ensuring quality and security from the start.
- Committed to energy-efficient solutions with A-rated glass as standard.
- Local expertise with deep roots in the North East UK.
Associations and certifications
- FENSA
What people say
Great service from start to finish
Highly recommend
Spot on repairs
Excellent company
Outstanding staff
Services
Composite Doors
Our composite doors combine a solid timber core with weatherproof materials like UPVC and GRP for unmatched durability and security. Designed to resist warping and fading, they feature advanced locking systems to protect your home while enhancing its aesthetic appeal. These doors are energy-efficient, reducing heat loss and lowering energy bills.
Conservatories
Celestial Windows offers custom-built conservatories in styles like Edwardian, Victorian, and Lean-To, designed to blend with your home. Our structures use high-quality materials and advanced glazing to ensure year-round comfort, adding valuable living space and natural light while maintaining thermal efficiency.
Icotherm Roofs
Icotherm roofs provide superior insulation using C24 timber construction to regulate temperature and reduce energy costs. These eco-friendly systems are pre-manufactured for quick installation, offering a 10-year guarantee and compatibility with existing conservatory bases for hassle-free upgrades.
uPVC Windows
Our uPVC casement windows are available in various styles, colours, and finishes to suit any property. Fitted with A-rated glass and multi-point locking systems as standard, they improve energy efficiency, security, and noise reduction while requiring minimal maintenance.
Bi-Folding Doors
Bi-folding doors create seamless transitions between indoor and outdoor spaces with sleek, space-saving designs. Constructed from durable materials and featuring high-security locks, they allow maximum natural light entry and are ideal for modernising homes in the North East.
People
Alan Sewell
Owner
Alan Sewell founded Celestial Windows in 1998 and has led the company's growth into a trusted name in window and door manufacturing. With over 25 years of industry experience, he oversees operations and maintains the company's commitment to quality and customer satisfaction.
Questions
What areas do you serve?
We operate across the North East, including Teesside and Middlesbrough, providing local expertise and tailored solutions for homeowners.
Do you offer a warranty on installations?
Yes, all our installations come with a 10-year insurance-backed guarantee via FENSA for added peace of mind.
Can I finance my window or door installation?
We offer affordable finance options to help spread the cost of your project. Contact us for more details.
Are your products energy-efficient?
Yes, we install A-rated glass as standard and use materials designed to improve thermal performance and reduce energy bills.
How long does a conservatory installation take?
Most conservatory installations are completed within a few days, with minimal disruption to your home.
Do you manufacture your own products?
Yes, we manufacture all our windows, doors, and conservatories in-house to ensure quality control and security from start to finish.
