The hup! building system, behind every Rex home extension
The hup! building system is manufactured under controlled factory conditions before arriving on site, helping Rex deliver a faster, more consistent build for homeowners across Maidstone. Its precision engineered wall and roof system combines structural strength with high levels of insulation, creating an energy efficient building system designed for modern home extensions.Precision engineered before it reaches your Maidstone home
A better way to build a house extension in Maidstone
There are plenty of reasons homeowners choose the hup! building system for their extension. Faster construction, less disruption and a more controlled build process all help make extending your home simpler from the outset.
For homeowners in Maidstone, Rex uses hup! to deliver a cleaner, more predictable alternative to traditional building methods, without compromising on strength, comfort or energy efficiency.
Powered by precision-engineered Ultrapanel technology
The hup! system combines the strength and accuracy of steel framing with the thermal performance and flexibility of timber technology, creating a highly energy efficient building system for homeowners across Maidstone and the wider Kent area.
With U-values as low as 0.12–0.17, the hup! building system delivers insulation levels that significantly exceed current Building Regulations. For homeowners planning a house extension in Maidstone, that means strong energy performance alongside the flexibility to create a modern living space designed around your home.
Super strong i-beam structure
The hup! wall panels are designed to be 68% stronger than a traditional brick wall. Once clipped together, the panels work collectively to form a strong i-beam structure throughout the extension, giving the hup! building system its impressive structural performance.
Rapid connection details
hup!’s precision-engineered components and patented wall-to-roof connections provide an accurate fit every time, helping to minimise cold spots and maximise thermal performance.
Thanks to its innovative clip-fit construction method, a hup! extension can be assembled up to five times faster than a traditional build, shortening installation time while maintaining excellent quality and performance.
Energy efficient building system
With industry-leading U-values of 0.17W/m²K for walls and 0.14–0.15W/m²K across hup! roof systems, the hup! building system delivers exceptional thermal performance and is one of the most energy efficient building systems available to UK homeowners today.
A lifespan backed by independent certification
The patented Ultrapanel system has been awarded a minimum 60-year life expectancy by the British Board of Agrément (BBA). This independently verified assessment is based on rigorous testing and evaluation, giving homeowners confidence in the long-term performance and durability of the hup! system.
Tried and tested by UK housebuilders in Kent
The Ultrapanel technology behind the hup! building system has already been adopted by leading UK housebuilders for use in new home construction.
Materials used in new homes are subject to NHBC approval, so hup! technology has undergone detailed assessment and accreditation by both the BBA and NHBC. For homeowners in Maidstone and across Kent, that adds another layer of reassurance around the system’s quality, durability and long-term performance.
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