Here to help
For more than forty years, Glevum Windows has specialised in installing quality windows, doors, and conservatories.
We are a trusted independent supplier and installer based in Gloucestershire, offering custom aluminium and uPVC windows, doors, and conservatories. We now also provide Smart Windows and Doors.
At Glevum Windows, we believe in meeting you in person and giving you our full attention. We’re happy to answer your questions and provide a no-obligation free quote. Your quote will include a clear breakdown of costs so you can make your decision with confidence.
Replacement Windows
Front & Back Doors
Smart Windows & Doors
Conservatories
Roof Upgrades
Garden Rooms
Entrance Porches
Integral Blinds
Finance Options
What makes Glevum Windows a trustworthy choice for your next home improvement project?
Out of 640 customers who took our Customer Survey, 92% said they would recommend Glevum Windows to others!
- We have been in business since 1984, bringing years of knowledge and experience to every project.
- We are a trusted FENSA-approved window and door installer based in Gloucestershire.
- As an Ultraframe supplier and member of the Ultra Installer Scheme, we are committed to providing high-quality products and service. You can count on us for an excellent installation in your home.
- We are an approved installer for Get Snug Windows & Doors.
- We are also a Kubu Pro Installer.
- All our windows and doors come with a 10-year INSTALLsure (formerly the GGFi) insurance-backed guarantee.
- If you need planning permission or building regulations, we will take care of it on your behalf.
- Our dedicated Service Department is always here to help you.
- Over 45,000 customers trust the security and quality of our windows and doors.
- Nearly half of our work comes from returning customers and referrals.
- Rated 'Excellent' on Trustpilot.
- We offer a range of Finance Options. Feel free to ask about them during your free home visit.
“A pleasure, as always. From start to finish, everything ran smoothly.”
G Delaney (Cheltenham)
July 2026
“Really lovely company. Have used in a previous home and would use again.”
S Price (Cheltenham)
June 2026
“Everyone we encountered from the company was very helpful, knowledgeable and friendly.”
G Day (Gloucester)
May 2026
“Really good, great throughout and great finished product.”
H Jenkins (Lydney)
April 2026
“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
“A pleasure, as always. From start to finish, everything ran smoothly.”
G Delaney (Cheltenham)
July 2026
“Really lovely company. Have used in a previous home and would use again.”
S Price (Cheltenham)
June 2026
“Everyone we encountered from the company was very helpful, knowledgeable and friendly.”
G Day (Gloucester)
May 2026
“Really good, great throughout and great finished product.”
H Jenkins (Lydney)
April 2026
“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
Here
to help
Areas We Serve:
Glevum Windows is a trusted home improvement specialist, helping homeowners throughout Gloucestershire, Herefordshire, Worcestershire and Monmouthshire.
We’re one of the largest, leading independent double glazing companies based in Gloucestershire. While our core area is Gloucestershire, we are ideally located to serve home improvement needs in Cheltenham, Gloucester, Tewkesbury, Stroud, Cirencester, Hereford, Ross-on-Wye, and Monmouth, among others.
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