GIS Windows PVCu Double Glazing Manufacturers & Installers

At GIS Windows we are rightly proud to be double glazing suppliers and manufacturers. With 28 years of experience, we have strived to supply the highest quality double-glazed windows, doors and conservatories with the best customer service. Our team has built up an enviable reputation for honest, factual and friendly service, which extends far beyond the salesroom. Unlike many double glazing suppliers and manufacturers all of our products are produced in the groups own factory ensuring total control of the process.
Our Products
All products are made within our 45,000 sq ft premises in Luton, Bedfordshire.
These products, as can be seen on this overview page, are varied and can be provided Supply only or Supply and fit. Made from an extensive integrated system, featuring a vast selection of windows, doors, hardware compatibility, and complementary accessories in a variety of styles and finishes.
GIS Windows’s products have been intensively tested by independent agencies to ensure compliance to the latest industry standards, British Standards, Secure by Design and Building Regulations.
Windows Enfield
PVCu Casement Windows
The GIS FS70 Casement window is ideal for commercial, new build and domestic applications. Traditional good looks, featured profile, internally glazed and compliant with the latest security standards.
PVCu Tilt & Turn Windows
The GIS FS70 Tilt and Turn windows combine a modern featured design with the ability to provide easy ventilation and cleaning options making it an excellent solution for both new build and refurbishment projects.
VCu Fully Reversible Windows
The GIS FS 70 Fully Reversible is designed for easy cleaning from inside the room. Ideal for restricted access locations throughout a wide range of commercial and domestic applications, in accordance with the recommendations of BS8213
PVCu Vertical Sliding Windows
The GIS Vertical Sliding window is designed to provide all the benefits that can be derived from high performance and modern materials, it’s advanced technology works in harmony with traditional design without compromise to character or appearance.
uPVC Doors North London
PVCu Entrance Doors
The GIS Fully Sculptured (FS70) residential entrance door is suitable for both domestic and commercial applications. A low threshold option is available where easy access is required. Compatible with all leading types of hardware and
fully meets with the security performance requirements of PAS 23/24. Available in white and woodgrain finishes.
PVCu French Doors
As with the other Doors in the suite the French Door is also suitable for domestic and commercial applications. The specialist profile has the unique featured lines and offers the option of either opening inwards or outwards with a full range of reinforcement to increase strength and security.
PVCu Sliding Patio Doors
The combination of ride over technology and the unique featured lines the GIS Patio Door provides the ideal solution for any application. A new slim sash and a frame design to co-ordinate with the other products in the GIS suite. The design is both cost effective and secure.
The GIS range of Conservatories North London
Picture yourself in a GIS conservatory and you could be enjoying the summer sunshine with a refreshing drink or hosting a dinner party under the stars. Our wide range of styles can provide a valuable extension to your home.
Our qualified consultants will talk you through the design process and the options which best suit your home, lifestyle and budget.
We have an in-house team of builders, so there is no need to deal with contractors for the base and brickwork of your conservatory. Our experienced team will do everything that is necessary - from electrical and plumbing works to under floor heating and air conditioning. GIS conservatories maybe elegant, long-lasting and energy saving, but they are more than a wise investment, they are the beginning of a new way of life for your family.