First UK-based closed loop recycling scheme
Here to help
At Glevum, we are committed to creating a brighter future for our customers through quality products and a focus on environmental sustainability.
What is closed-loop recycling?
Closed-loop recycling is the process of using recycled material to manufacture new products in the same category.
We’re working with leading manufacturers to reduce waste, avoid landfills, and recycle your old windows into closed-loop recycling programmes.
Our primary supplier, Emplas Window Systems, in association with the Epwin Group and Poly-Pure, is at the forefront of the closed-loop recycling process for uPVC window frames.
You can be reassured that when we remove your old windows and doors, we will ensure that every piece of uPVC material collected is evaluated and processed as part of a closed-loop recycling programme.
Every step of the process, from recovering and recycling material to manufacturing new products, takes place in the UK.
The Process in six easy steps:
- Removal: When installing your new replacement windows and/or doors, our fitting team will carefully remove your old windows and/or doors and bring them back to our headquarters in Newnham on Severn.
- Collection: The frames are then collected and transported to specialist UK-based recycling facilities.
- Processing: Advanced techniques are used to separate and refine them. Other materials, such as rubber and metals, are also recovered.
- Remanufacture: Recycled uPVC pellets are made into new lengths of window frame.
- Fabrication: Brand-new window frames are cut, machined, welded, and glazed to order.
- Installation: These new windows are installed in a customer's home. Performance and aesthetics remain exceptional, and waste has been minimised, thus giving your old windows and doors a new home and us all A Brighter Future!
Glevum Windows give you peace of mind:
- Established in 1984, we offer extensive knowledge and experience.
- We are a leading FENSA-approved window and door installer based in Gloucestershire.
- As a leading Ultraframe supplier and member of the Ultra Installer Scheme, we are committed to delivering high-quality products and service. You can rely on us for 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
From traditional white windows to windows with coloured frames and timber-look windows, our windows come in a wide range of colours, styles, and designs.
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.
Conservatories
For many homes, space is at a premium, so a tailor-made Conservatory from Glevum will give you more space and act as the perfect link between your home and garden.
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“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