FREE Upgrade to Triple Glazing - Terms & Conditions
Here to help
Reduce your energy bills and carbon footprint with Glevum - A trusted name for over four decades!
Our triple-glazed windows offer many benefits to help reduce your energy bills while increasing your year-round comfort. These include:
- Reduced energy bills: With improved thermal performance, lower your heating and cooling costs.
- Help the environment by reducing your carbon footprint. By better regulating the temperature in your home, you can reduce your energy consumption and, in turn, your carbon footprint.
- Reduced outside noise: Triple-glazed windows provide an extra barrier compared to standard double glazing, further reducing outside noise.
- Increased property value: An energy-efficient, low-carbon footprint can make a property more desirable.
- Enhanced Security: Modern windows offer advanced security features that provide a vital layer of protection for any home. This can be further increased by investing in windows from the Glevum Smart range, which send meaningful alerts and notifications directly to your phone.
Triple glazing is an investment in heightened comfort and environmental efficiency.
Terms & Conditions:
Our FREE Upgrade to Triple Glazing is covered by the following Terms & Conditions (as of 12-06-2026):
- Minimum Window & Door order value of £5,500 inc VAT and Fitting.
- The FREE upgrade ONLY applies to the window element of the order.
- Offer EXCLUDES the 'Residence' range of timber-look flush windows.
- Offer EXCLUDES the 'Integral Blinds' range.
- The order can only be used with the 'Buy Now Pay 2027' Finance Option if financing is required.
Why choose Glevum Windows?
Glevum Windows has been installing quality windows, doors, conservatories and conservatory roof upgrades in Gloucestershire, Herefordshire, Monmouthshire, Wiltshire, Worcestershire, and Bristol for over four decades, and about half our work comes from returning customers and recommendations.
For a full breakdown of the postcodes we serve, please see our ‘Areas We Serve’ page.
Please browse our Customer Testimonials and Google Reviews.
- Established in 1984, we offer extensive knowledge and experience.
- We are a leading FENSA-approved window and door installer based in Gloucestershire.
- Get Snug Windows & Doors Approved Installer.
- 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.
Related Blogs:
“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
“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