Quality Replacement Windows in a range of styles

Here to help
We are a leading (FENSA-Approved) supplier and installer of custom-made windows and doors, based in Gloucestershire.
Bricks and mortar may form your house’s foundations, but our windows and doors will create its personality. Therefore, it is worth taking your time to make the right choices when choosing your windows.
Here at Glevum Windows, we understand that investing in new replacement windows is a big decision.
This is why we believe in the personal, face-to-face approach. We’ll give you the necessary advice, answer any of your questions, and provide a no-obligation quotation with a complete itemised breakdown of what you are being quoted for to help you decide.
We pride ourselves on offering a complete range of uPVC and aluminium window styles in a range of finishes to improve your home inside and out.
Our virtually maintenance-free windows ensure a relaxing, secure, and energy-efficient home from styling to performance.
Why choose Glevum for your replacement windows in Cheltenham, Gloucester, Hereford and Monmouth?
- Established in 1984, so have a wealth of knowledge and experience.
- We are a leading Gloucestershire-based FENSA-approved window and door installer.
- Our windows and doors are covered by a 10-year insurance-backed guarantee (backed by the GGFi).
- Dedicated Service Department.
- 45,000+ customers benefit from the security and quality of our windows and doors.
- Typically, 50% of our work comes from existing customers and recommendations.
- A range of Finance Options available.
uPVC Casement Windows
A favoured design that is attractive and durable offers security and energy efficiency and is available in many styles and finishes to enhance the look of your home.
Aluminium Casement Windows
Our made-to-measure Aluminium windows are suitable for both traditional and modern properties and offer excellent thermal and acoustic performance.
uPVC Sliding Sash Windows
Combine the elegance and historic charm of traditional windows with our sliding sash windows, which provide the best in energy, security, and acoustic performance.
Secondary Glazing
Our range of slimline secondary glazing (a secondary window that fits inside the current window frame) is designed to be sleek and unobtrusive, and hence, it will not impact a property's external aesthetics.
Timber-Look Flush
Residence 9: an actual timber alternative flush uPVC window. Residence 7: flush external & internal windows, giving a modern appearance. Residence 2: an alternative aluminium flush window with a unique square interior.
Finance your Windows & Doors
To help you take the benefits 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.
Related Blog(s)
- Property Trends: A Look Back at 2024 & What to Expect in 2025.
- 10 Reasons Why Regional Installers Are Better Than National Ones.
- What factors will influence your windows and doors quote?
- Why cheapest may not always be best when it comes to doors and windows.
- Pitfalls to avoid when buying new windows and doors and how to avoid them.