Enhance your home's historic charm with uPVC sliding sash windows from Glevum
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Glevum's uPVC Sliding Sash Windows blend classic design with modern technology, providing historic appeal and the benefits of high-performance double glazing for your home.
Smart as Standard: These windows include Kubu® Smart Security Sensors. The Kubu® Smart Alerting System lets you check whether your window is open, closed, or being tampered with via a smartphone app. T&Cs apply.
There’s something about the elegant, vertical lines of a sliding sash window that adds instant character. A Victorian terrace or Georgian townhouse, for example, simply doesn’t look right with generic, modern casements. Installing period-appropriate windows restores a home's original soul, dramatically boosting its kerb appeal and making the property feel complete.
This visual upgrade translates directly into financial value. Estate agents often list "original-style sash windows" as a key selling point because they know it commands more attention and higher offers. Buyers are frequently willing to pay a premium for the timeless, historical charm these windows provide, signalling a well-maintained, authentic home.
So, are sash windows worth the cost? When viewed as a long-term investment in your property's value, the answer becomes clear. Far from being a simple expense, choosing the right windows is a strategic upgrade that pays dividends in both your daily enjoyment and at the point of sale.
Glevum's uPVC Sliding Sash Windows are virtually maintenance-free, available in single-hung or double-hung styles, and are designed to prevent rattling, jamming, and draughts. They improve energy efficiency, security, and acoustic performance, keeping your home comfortable and secure.
A wide selection of colours, finishes, and glass designs lets you customise your windows to suit your style, including classic white, woodgrain, and bold solid colours. These windows are suitable for replacing timber sliders in historic buildings or enhancing new developments. Glevum, established in 1984 and FENSA-approved, provides quality, security, and style, all backed by a 10-year guarantee. To arrange a free home visit, please contact us.
Ideal for replacing timber sliders in historic buildings and adding character to any development.
- Individually tailor-made to your exact requirements.
- Energy efficient.
- Reduce unwanted external noise.
- Minimal maintenance.
- Secure.
- Extensive choice of designs.
- Available in various foiled finishes, both woodgrain and solid colour.
- A range of handle colours is available to complement your window finish.
- Wide range of glass designs, from leaded to Georgian bar.
Add a splash of colour.
Our Sliding Sash Windows are available in a variety of colour finishes, including classic white, woodgrain options such as rosewood and golden oak, and several modern solid colours. While white provides a clean, timeless look, you may prefer another finish that better suits your property. You can also select different colours for the interior and exterior frames, such as a woodgrain or coloured finish outside and white inside. The choice is yours.
Coloured window frames offer the appearance of traditional painted timber while providing the benefits of modern uPVC, such as improved security and energy efficiency. Glevum’s coloured uPVC windows retain their appearance year after year with minimal maintenance. The fine wood grain effect preserves the authentic look and feel of timber frames at a lower cost.
Frequently Asked Questions:
Looking for replacement sliding sash windows in Cheltenham, Gloucester, Hereford or Monmouth? Then here’s why you can feel good about working with Glevum:
- We have been in business since 1984 and bring a wealth of knowledge and experience.
- We are a leading FENSA-approved window and door installer based in Gloucestershire.
- 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.
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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