Ultraframe hup! the quickest way to replace your conservatory on an existing base
Here to help
The Ultraframe's hup! system provides a quick and low-disruptive way of carrying out a home extension while giving you the greatest possible design flexibility.
Ultraframe hup! Extensions are a cutting-edge alternative to conventional brick-and-block home extensions. They are made of pre-engineered Ultrapanels (high-performance panels) to produce a strong, thermally efficient extension that is five times more energy-efficient than a traditional brick building. hup! will keep your space comfortable year-round, even with large areas of glass. With hup! you can design the space that you want.
Create a bright, open-plan living area, a comfortable garden room, or upgrade your conservatory to a modern, energy-efficient space much faster than traditional methods. hup! offers high-quality finishes, rapid construction, and design flexibility. It is made in Britain and comes with a 10-year guarantee.
hup! gives you the ultimate in design flexibility:
hup! Roof Styles:
Choose from four hup! roof types:
hup! Windows and Doors:
- Windows where you want the view.
- Choose bi-fold, sliding or French doors to access the outdoors.
Walls:
Walls where you need privacy, TVs or kitchen cupboards.
- More walls will enable a change in usage:
- Open Plan Kitchen.
- Home Office.
- Playroom.
- Cinema Room.
- Utility Room.
- Downstairs Bedroom.
- More walls will enable a change in usage:
Wall Finishes:
- One of the most flexible features of the Ultraframe hup! is its ability to work with a wide range of external wall finishes, allowing your hup! Extension to blend with the rest of your home. Available external wall finishes:
- Brick finishes for a more traditional look.
- Render.
- Timber cladding for a more contemporary look.
Thanks to its advanced insulation and airtight construction, hup! is five times more energy-efficient than the average UK home and comfortable year-round, resulting in lower energy bills for you. Its walls are much thinner than traditional brick walls, giving you more usable space and increasing your home's value.
hup! is a revolutionary way to extend your home and create beautiful, bright living spaces with minimal disruption to your family.
hup! removes the stress of creating your dream place:
- No worries about costs spiralling out of control.
- Minimal mess and disruption.
- No stream of strangers in your home, just Glevum.
hup! is ideal for:
- Single-storey extensions.
- Conservatories.
- Transformation of existing conservatories.
- Garden rooms.
Contact us today to arrange a free home visit to discuss your project and get a no-obligation quote.
Conservatories
As energy efficient as an extension.
Enjoy abundant natural light in your home, knowing that high-performance glazing ensures energy efficiency. This specialist glazing also helps maintain warmth while preventing overheating and furniture fading.
Every hup! conservatory is constructed from materials that meet the latest Building Regulations standards for extensions.
The insulated internal pelmet, high-performance roof glass, and super-insulated walls ensure your hup! conservatory matches the energy efficiency of any modern extension.
Transforming an existing Conservatory
Extension-like Conservatory Upgrades.
If you want to upgrade your old conservatory, hup! offers a straightforward solution. In just a few weeks, hup! can convert your conservatory into a modern, energy-efficient extension that integrates seamlessly with your home. Its lightweight, energy-efficient walls are quick, easy, and cost-effective to install on existing bases.
You can upgrade to a high-performance glass roof or select a super-insulated solid roof with rooflights. Both options improve your conservatory’s thermal performance while maintaining natural light in adjoining rooms.
Super-insulated walls make your new hup! energy-efficient enough to convert your conservatory into a modern open-plan extension. You can remove internal doors to open the space to adjoining rooms.
Extensions
Five times faster than traditional methods.
Whether you want an open plan room that connects your living space to the garden, or a home office or playroom with abundant natural light, hup! can help create the ideal environment.
hup! offers flexibility in design, and every roof includes high-performance glass rooflights to ensure your new room receives ample natural light.
Extending your home with hup! is straightforward and efficient. You will not need to coordinate multiple contractors or be concerned about exceeding your budget.
In addition to home extensions, hup! is well-suited for creating a garden room that provides family members with a private and comfortable living space.
What makes Glevum Windows a trustworthy choice for your hup! conservatory or home extension?
Out of 640 customers who took our Customer Survey, 92% said they would recommend Glevum Windows to others!
- We have been in business since 1984, bringing years of knowledge and experience to every project.
- We are a trusted FENSA-approved window and door installer based in Gloucestershire.
- As an Ultraframe supplier and member of the Ultra Installer Scheme, we are committed to providing high-quality products and service. You can count on us for an excellent installation in your home.
- We are an approved installer for Get Snug Windows & Doors.
- We are also a Kubu Pro Installer.
- All our windows and doors come with a 10-year INSTALLsure (formerly the GGFi) insurance-backed guarantee.
- If you need planning permission or building regulations, we will take care of it on your behalf.
- Our dedicated Service Department is always here to help you.
- Over 45,000 customers trust the security and quality of our windows and doors.
- Nearly half of our work comes from returning customers and referrals.
- Rated 'Excellent' on Trustpilot.
- We offer a range of Finance Options. Feel free to ask about them during your free home visit.
“Excellent. Turn key solution and Glevum took away my hassle, particularly that the location was not the easiest. Very good communication at all stages.”
M Julian-Jones (Newport)
September 2026
“Professional, timely, friendly and efficient.”
J Hardwick (Stonehouse)
August 2026
“A pleasure, as always. From start to finish, everything ran smoothly.”
G Delaney (Cheltenham)
July 2026
“Really lovely company. Have used in a previous home and would use again.”
S Price (Cheltenham)
June 2026
“Everyone we encountered from the company was very helpful, knowledgeable and friendly.”
G Day (Gloucester)
May 2026
“Really good, great throughout and great finished product.”
H Jenkins (Lydney)
April 2026
“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
“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. Turn key solution and Glevum took away my hassle, particularly that the location was not the easiest. Very good communication at all stages.”
M Julian-Jones (Newport)
September 2026
“Professional, timely, friendly and efficient.”
J Hardwick (Stonehouse)
August 2026
“A pleasure, as always. From start to finish, everything ran smoothly.”
G Delaney (Cheltenham)
July 2026
“Really lovely company. Have used in a previous home and would use again.”
S Price (Cheltenham)
June 2026
“Everyone we encountered from the company was very helpful, knowledgeable and friendly.”
G Day (Gloucester)
May 2026
“Really good, great throughout and great finished product.”
H Jenkins (Lydney)
April 2026
“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
“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
Frequently Asked Questions:
Areas We Serve:
Glevum Windows is a trusted home improvement specialist, helping homeowners throughout Gloucestershire, Herefordshire, Worcestershire and Monmouthshire.
We’re one of the largest, leading independent double glazing companies based in Gloucestershire. While our core area is Gloucestershire, we are ideally located to serve home improvement needs in Cheltenham, Gloucester, Tewkesbury, Stroud, Cirencester, Hereford, Ross-on-Wye, and Monmouth, among others.