Discover Modern Aluminium Windows: Elegant, Durable & Secure
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Looking to upgrade your home with a sophisticated, modern touch? Discover Glevum's high-quality aluminium replacement windows, perfect for both traditional and contemporary properties.
Our made-to-measure aluminium casement windows combine sleek aesthetics with exceptional durability, energy efficiency, and security (certified PAS 24). With a wide range of colours, finishes, and configurations—including tilt-and-turn, bay, and even two-in-one options—you're sure to find the perfect fit for your style and space, all while feeling safe and secure.
Why settle for anything less than the best? With a rich legacy of over 40 years, Glevum is a name you can trust. Our aluminium windows come with a 10-year insurance-guaranteed warranty, a testament to our commitment to quality. Our dedicated team is always at your service, ready to help with a free home visit and a no-obligation quote. So, why wait? Take the first step towards transforming your home today with Glevum.
- Modern aesthetics.
- 70mm frame to allow light to flood into your home.
- Side or top hung opening.
- Secure (British security certification PAS 24).
- Excellent energy-efficiency
- Acoustic insulation to help reduce outside noise.
- A long-lasting, durable profile with the strength to last a lifetime.
Looking for replacement aluminium casement windows in Cheltenham, Gloucester, Hereford or Monmouth? Then here’s why you can feel good about working with Glevum:
- 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.
Unlimited colour range:
The whole RAL colour chart is available in powder coating, metallic, textured, wood effect, over 100 anodised finishes, and even two-coloured finishes.
Alternative Configurations:
Tilt and Turn (two-way opening): Tilt-and-Turn windows benefit from a hinge mechanism that allows you to tilt the window inwards (from the bottom) for ventilation and easy cleaning. This makes them ideal window configurations for balconies and terraced houses, as they can fully open inwards to help you better use outdoor space (especially for balconies).
Bay Style Window: Designed to create a sense of space, depth, and light. Using our casement windows, they can be individually tailor-made to your exact requirements.
Bay with Tilt and Turn: You can also incorporate Tilt and Turn within a Bay-style window.
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A truly professional company, who respected our home, were courteous and helpful when dealing with us.
M. Wear (Gloucester)
Every member of staff we have dealt with provided excellent customer service they were friendly and professional. We are happy to recommend the company.
S. Groves (Swindon)
Excellent service from start to finish. Well explained on the initial home visit and questions answered fully. Easy to make payments and such a professional and pleasant experience. I would recommend to others and would definitely use the company again.
B Rollins (Gloucester)
Glevum Windows and doors are of excellent quality and the fitters, Matt and Dean were both quick, efficient and tidy workers. We found them both friendly and polite. We would not hesitate to recommend the Company and the service they provided.
N Harris (Pershore)
A very personal service; I felt valued as a customer and they listened to what I wanted. Excellent quality of product and service. I decided not to go with a larger well-known brand as they did not provide the same personal service in the quotation stage.
J. Miller (Symonds Yat)
Excellent everyone was professional and yet friendly. I felt all were giving me good service and I felt a valued customer.
D. Morse (Lydney)
Always helpful and courteous whichever department one is speaking with.
Fitters are skilled and careful. Products are not the cheapest on the market but they are of the best quality and extremely good value for money.
R. Savage (Worcester)
Excellent service from start to finish, we had secondary Glazing fitted into our dental practice. Glevum attended when they said they would, completed the job with minimum disturbance to the daily running of the practice, and left their work place clean and tidy. The glazing has made such a difference, staff are much warmer and the radiators have been turned to low.
H. Pugh (Gloucester)
Glevum were prompt in quoting for the work. The order was placed and doors and windows far more quickly than other companies were able. The fitting was completed to a high standard. I'm very happy with the work and product!!
K. Smit (Bristol)
So happy with installation, can really feel the difference in room temperature. Fitters were excellent, very pleasant and left everywhere clean and tidy. Very professional job. Would certainly recommend. Thankyou Glevum.
L. Hollis (Ross-on-Wye)
A truly professional company, who respected our home, were courteous and helpful when dealing with us.
M. Wear (Gloucester)
Excellent service from start to finish. Well explained on the initial home visit and questions answered fully. Easy to make payments and such a professional and pleasant experience. I would recommend to others and would definitely use the company again.
B Rollins (Gloucester)
Every member of staff we have dealt with provided excellent customer service they were friendly and professional. We are happy to recommend the company.
S. Groves (Swindon)
Glevum Windows and doors are of excellent quality and the fitters, Matt and Dean were both quick, efficient and tidy workers. We found them both friendly and polite. We would not hesitate to recommend the Company and the service they provided.
N Harris (Pershore)
A very personal service; I felt valued as a customer and they listened to what I wanted. Excellent quality of product and service. I decided not to go with a larger well-known brand as they did not provide the same personal service in the quotation stage.
J. Miller (Symonds Yat)
Excellent everyone was professional and yet friendly. I felt all were giving me good service and I felt a valued customer.
D. Morse (Lydney)
Always helpful and courteous whichever department one is speaking with.
Fitters are skilled and careful. Products are not the cheapest on the market but they are of the best quality and extremely good value for money.
R. Savage (Worcester)
Excellent service from start to finish, we had secondary Glazing fitted into our dental practice. Glevum attended when they said they would, completed the job with minimum disturbance to the daily running of the practice, and left their work place clean and tidy. The glazing has made such a difference, staff are much warmer and the radiators have been turned to low.
H. Pugh (Gloucester)
Glevum were prompt in quoting for the work. The order was placed and doors and windows far more quickly than other companies were able. The fitting was completed to a high standard. I'm very happy with the work and product!!
K. Smit (Bristol)
So happy with installation, can really feel the difference in room temperature. Fitters were excellent, very pleasant and left everywhere clean and tidy. Very professional job. Would certainly recommend. Thankyou Glevum.
L. Hollis (Ross-on-Wye)