Here to help
Since 1984, Glevum has delivered expert installation of premium Windows, Doors, and Conservatories.
We’re a trusted supplier and installer in Gloucestershire for custom-made aluminium and uPVC windows, doors, and conservatories. We now also offer Smart Windows and Doors.
Glevum Windows give you peace of mind:
- We have been in business since 1984 and bring a wealth of knowledge and experience.
- We are a leading FENSA-approved window and door installer based in Gloucestershire.
- We are a leading supplier of Ultraframe. As part of their Ultra Installer Scheme, we are committed to great products and excellent service. You can trust us to deliver top-quality installation for your home.
- We are a Kubu Pro Installer.
- All our windows and doors include a 10-year GGFi-backed guarantee.
- Our dedicated Service Department is here to support you.
- More than 45,000 customers enjoy the security and quality of our windows and doors.
- About half of our work comes from returning customers and recommendations.
- We offer a range of Finance Options. Just ask for details during your free home visit or quote.
Replacement Windows
We offer a variety of windows, from classic white to coloured frames and timber-look styles. Our windows come in many colours and designs to match your home perfectly.
Front & Back Doors
The right front door can create and maintain a great first impression. A pair of French Doors, a set of Sliding Patio Doors, or bifold doors can better connect your home to your garden.
Smart Windows & Doors
Innovative product range goes beyond standard windows and doors, with intelligent technology built in. Our Smart range of high-quality windows and doors gives you real-time alerts.
Conservatories
For many homes, space is limited. A custom Conservatory from Glevum can give you extra space. It also serves as a great connection between your home and garden. Our customers regularly tell us that their conservatory has rapidly become their favourite room in the house.
Roof Upgrades
If you're looking for a new roof for your conservatory, Glevum has great options. You can choose a mix of glazed and solid roofs, a tiled roof with glass panels, or a sleek lantern roof. These upgrades can improve any home style, whether it's traditional or modern. Plus, they help solve the problem of your conservatory being too hot in summer and too cold in winter.
Garden Rooms
You can customise the two different Garden Room styles with full-length windows and modern insulated side panels. You can also add large fixed glass rooflights to make your space truly unique. This is the perfect way to create a quiet area disconnected from the house, ideal for a home gym or garden office space.
Entrance Porches
You can combine our windows and doors with your choice of roof to create a custom porch. This will make your home’s entrance more welcoming, secure, and energy-efficient. Plus, it adds extra space!
Integral Blinds
Our double-glazed windows and doors are now available with maintenance-free integral blinds. The innovative system is integrated between two high-quality glazing panes.
Finance Options
To help you take advantage of new double glazing now, we have teamed up with one of the UK’s leading financial services companies, so you’re in safe hands.
“Friendly, helpful staff from sales person to fitter, excellent service all round.”
J Holyhead (Gloucestershire)
March 2026
“Very helpful and reassuring. My window and door were fitted by 2 very nice men and its prefect, we are so pleased, thank you so much.”
K Smith (Gloucestershire)
February 2026
“Very professional service from the quote to the fitting. Very pleased.”
J Ochiltree (Gloucestershire)
January 2026
“We have used Glevum many times over the last 25 years and have never been disappointed with the quality of workmanship, timely service and friendly approachable people.”
M Tattersall (Gloucestershire)
January 2026
"Excellent service and workmanship. Highly recommend."
M Tomlin (Gloucestershire)
November 2025
"Glevum were very professional throughout the purchase and installation and I am happy with the finished result. Installation team were courteous, neat and tidy throughout the process."
R Elliott (Gloucestershire)
November 2025
“Friendly, helpful staff from sales person to fitter, excellent service all round.”
J Holyhead (Gloucestershire)
March 2026
“Very helpful and reassuring. My window and door were fitted by 2 very nice men and its prefect, we are so pleased, thank you so much.”
K Smith (Gloucestershire)
February 2026
“Very professional service from the quote to the fitting. Very pleased.”
J Ochiltree (Gloucestershire)
January 2026
“We have used Glevum many times over the last 25 years and have never been disappointed with the quality of workmanship, timely service and friendly approachable people.”
M Tattersall (Gloucestershire)
January 2026
"Excellent service and workmanship. Highly recommend."
M Tomlin (Gloucestershire)
November 2025
"Glevum were very professional throughout the purchase and installation and I am happy with the finished result. Installation team were courteous, neat and tidy throughout the process."
R Elliott (Gloucestershire)
November 2025