Enhance your property value with high-quality, well-designed house extensions.
Here to help
If you want to enhance your living space and increase your home's value, consider a bespoke house extension from Glevum.
Their expertly crafted extensions provide versatile solutions, whether you want a dining area, orangery, or additional room. Built with thermally efficient, regulation-approved components, these extensions offer quick installation, elegance, and year-round comfort.
These spaces feature natural light, glass roofs, solid brick pillars, and customisable shapes, creating a unique environment. Options such as Livinroof and Ultraroof combine thermal efficiency with attractive design. Glevum’s experienced team manages every step, from planning permission to installation, for a seamless experience.
To enhance your home, contact us for a free home visit and a no-obligation quote. Many homeowners in Cheltenham, Gloucester, Hereford, and Monmouth choose Glevum for quality, craftsmanship, and service. Begin your project with us today.
If planning permission or building regulations are required, we will manage the process on your behalf to ensure a seamless experience.
Glazed Extension
Our Glass Roof, combined with performance glass and either masonry piers or super-insulated columns, provides both structural solidity and the thermal efficiency needed for a house extension. The glass roof also maximises natural light and creates a spacious atmosphere, delivering a true ‘wow’ factor.
- Super-insulated columns allow for increased glazing in your orangery extension while ensuring compliance with building regulations.
- Super-insulated columns paired with bi-fold doors create a contemporary appearance.
- A glass roof reduces solar gain and retains heat, helping to prevent fabric fading and maintain a comfortable temperature in your orangery extension.
- Each extension includes at least four large corner columns, with additional in-line columns as required by the design or size.
- The insulated perimeter pelmet is 800mm deep and filled with 100mm of mineral fibre insulation.
- Choose from uPVC, aluminium, or Ultrasky roof options.
- Each structure is engineered to meet the specific requirements of your postcode, ensuring peace of mind.
- For added solidity and warmth, select brick pillars and walls.
Livinroof Extension
Livinroof house extensions combine the advantages of solid and glass conservatory roofs. This system allows you to add glazing in any location or shape, offering design flexibility. Livinroof can create a focal point in your orangery or house extension, helping it stand out.
- Livinroof extensions are highly thermally efficient and meet Building Regulations, allowing for the removal of internal doors.
- Each extension includes at least four large corner columns, with additional in-line columns as required by the design or size.
- The contemporary Livinroof design complements bi-fold or sliding doors.
- You can specify the shape and placement of glazing panels to direct natural light where it is needed.
- An internal plastered vaulted ceiling provides options for spotlights or pendant lighting.
- Shaped glazing can create a distinctive internal finish.
- Each extension is structurally engineered to meet the requirements of your location.
- The Livinroof system features a solid roof with up to 10% glazing, typically accommodating two glass panels.
Ultraroof Extension
Ultraroof house extensions combine the thermal efficiency of brick or super-insulated columns with advanced lightweight tiled roof solutions. Inside, the Ultraroof features a vaulted plastered ceiling, while the exterior showcases authentic-looking lightweight tiles. Optional full-glazed panels can be added to enhance natural light and create a striking visual feature.
- The system is highly thermally efficient and fully compliant with Building Regulations, allowing for the removal of internal doors.
- Each extension includes at least four large corner columns, with additional in-line columns as required by the style, design, or size of the extension.
- A thermally insulated interior pelmet is included to enhance energy efficiency and provide space for spotlights or speakers.
- Each Ultraroof extension is structurally engineered to meet the specific requirements of your location, ensuring reliability and peace of mind.
- Full-length glass panels are available to maximise natural light within the room.
- The Ultraroof solid roof system is primarily solid, with the option to include up to 10% glass, typically in the form of two glass panels.
Frequently Asked Questions:
Looking for a home extension in Cheltenham, Gloucester, Hereford or Monmouth? Then here’s why you can feel good about working with Glevum:
- 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.
- Get Snug Windows & Doors Approved Installer.
- We are a Kubu Pro Installer.
- All our windows and doors include a 10-year GGFi-backed guarantee.
- We will handle any planning permission or building regulations (if required) on your behalf.
- 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