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Premium Windows, Doors & Conservatories in Gosport
GS Windows is a premium manufacturer, supplier, and installer of high-quality Rehau 70mm windows, doors, and conservatories, with over 25 years of industry experience. Established to meet the evolving needs of domestic, commercial, and trade markets, the company operates from a state-of-the-art factory in Gosport, Hampshire, utilising modern machinery to ensure precision and durability. Accredited by Fensa and supported by the Plastic Window Federation, GS Windows prioritises customer satisfaction through tailored solutions, energy-efficient products, and comprehensive after-sales service.

The team, trained to the highest standards, delivers installations for local councils and major organisations, backed by Checkatrade verification. With a commitment to innovation and quality, the company offers free, no-obligation quotations and financing options to enhance accessibility for homeowners in Hampshire and Dorset.
Services
Windows Doors Conservatories Bi-Fold Doors Aftersales Support
Highlights and features
  • Over 25 years of experience in manufacturing and installing windows and doors.
  • Fensa-registered for industry-standard compliance and consumer trust.
  • Checkatrade-verified with vetted customer feedback and rigorous quality checks.
  • Free, no-obligation quotations for tailored home improvement solutions.
  • High-quality, energy-efficient products designed for security and longevity.
Associations and certifications
  • Fensa
  • Plastic Window Federation
  • Checkatrade
What people say
Excellent service High-quality products Professional installation Great communication Prompt aftersales
Services
Windows
GS Windows offers made-to-order windows in various styles and colours, including casement, French, bay, and sliding designs. Using Rehau 70mm systems, they ensure energy efficiency and security, with options for triple glazing and decorative finishes like Georgian bars. Available in woodgrain effects and modern shades, these windows enhance home aesthetics while meeting A+ energy ratings.
Doors
The company provides high-quality composite, glazed, and stable doors in customisable colours and finishes. Options include French doors, sliding doors, and bi-fold systems, designed for security, low maintenance, and thermal efficiency. Their online door builder tool helps customers visualise designs, ensuring a tailored entrance that complements individual home styles.
Conservatories
Expertly engineered conservatories and orangeries are tailored to client specifications, featuring glass, skypod, or tiled roofs. Designed to blend with existing architecture, these structures offer year-round usability, with options for traditional Victorian or modern lean-to styles. The team ensures compliance with planning regulations and energy efficiency standards.
Bi-Fold Doors
Bi-fold doors create seamless indoor-outdoor living spaces, with made-to-measure aluminium or PVC-U frames. The company offers multi-fold and Invisifold options for flexible space utilisation, combining sleek design with functionality. Installations include expert fitting and customisation to match property aesthetics.
Aftersales Support
Comprehensive aftersales support addresses post-installation issues, including repairs and maintenance. Customers can submit detailed reports via an online form, with image uploads to expedite resolution. The team provides prompt communication and on-site visits to ensure long-term product performance and customer satisfaction.
Questions
What areas do GS Windows serve?
GS Windows operates across Hampshire and Dorset, providing installations and support for domestic and commercial properties.
Are financing options available?
Yes, GS Windows offers finance through Kanda, with options like a 60-month loan at 11.9% APR for qualifying projects.
What accreditations does GS Windows hold?
The company is Fensa-registered, a member of the Plastic Window Federation, and Checkatrade-verified for quality and reliability.
Can I get a free quotation?
Yes, GS Windows provides free, no-obligation quotations tailored to your specific project requirements.
What types of windows are available?
Options include casement, French, bay, bow, sliding, and flush-fit windows in uPVC or aluminium, with custom colours and energy-efficient glazing.
How do I report an issue with my installation?
Use the online aftersales form to describe the problem and upload images for prompt resolution by the service team.