hup! - Fortress Windows

We're revolutionising conservatory & extension construction

The better way to build

Ultimate design flexibility

Choose from four distinct roofs and a wide variety of windows, walls and doors and make your extension project bespoke to you.

Five times faster to build

Due to hup!'s innovative and rapid connection technology, your new hup! project can be completed in a fraction of the time traditional building methods require!

Five times more energy efficient

Help the environment by lowering your carbon footprint with hup! The innovative development of hup! offers exceptional levels of energy efficiency, which will also lower your energy bills!

High quality finish

hup!'s cutting-edge process represents the highest level of engineering prowees. Using only the most advanced manufacturing and expert builders to accomplish an excellent quality standard for your property.

One supplier, one project

To ensure maximum efficiency, one team will manage the construction and installation of your hup! Your project duration will be reduced so you can enjoy your finished project in no time, and you don't have to worry about having strangers walking around your home!

Book a design appointment

Personalise your hup!

hup! technology explained

hup! technology is unmatched by any other product on the market, by making the most of revolutionary technological advances to provide a breakthrough method of home extension construction. hup!'s innovative qualities can result in five times the energy efficiency of traditional builds and be built five times faster. Find out how hup! can enhance your home!

hup! Conservatory transformations

Transform your conservatory with hup! Upgrade your conservatory from its outdated design to a brand-new extension for your home!

hup! Extensions

Construct your dream home extension with hup! Due to the cutting-edge technologies, you can enjoy your home extension five times faster than any traditional construction!

hup! Conservatories

Enjoy your conservatory all year round with hup!'s insulation technology. Made bespoke for you, you can make your conservatory perfect for your home! Enjoy your hup! Conservatory and bask in natural light!

hup! Garden homes

Make the most of your garden and create a space perfect for you and your loved ones. Give your exterior space a brand new feature with hup!

Ultimate Design Flexibility

Interactive hup! brochure

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