For installers, fabricators, and specifiers, performance claims matter only when backed by real-world data. When comparing a composite front door to traditional timber designs, the difference in thermal performance isn’t theoretical; it’s measurable and proven in controlled testing environments.
Vista’s work with Salford University’s Energy House demonstrates just how advanced composite door technology can be, giving trade customers confidence in specifying energy-efficient doors that deliver.
Pioneering work with Energy House
Vista has always been ahead of the curve when it comes to energy efficiency and sustainability. In 2012, we partnered with the University of Salford’s Energy House, the world’s only fully climate-controlled research facility capable of replicating a fully functioning home under almost any weather condition.
This unique collaboration allowed Vista to subject its doors to rigorous testing across a range of temperatures, humidity levels, wind, and rainfall, therefore providing a true reflection of real-world performance. According to Vista’s Managing Director Chris Burrows “Precisely measuring thermal performance has always been key to giving our customers confidence in our products, and in today’s market, it’s more important than ever.”
Energy House research is particularly significant for trade customers, because approximately 30% of all the energy used in the UK is consumed in homes, and 45% in all buildings. Understanding how doors perform in different climates helps ensure that the products you specify deliver measurable reductions in heat loss and energy use.
Why composite doors outperform timber
Modern composite doors are engineered to exceed the limitations of timber. Vista’s XtremeDoor, for example, is designed to provide first-class thermal performance through several key innovations:
- High-insulating foam core – up to six times more efficient than traditional timber cores.
- Triple-seal outer frame with thermal inserts – minimises draughts and air infiltration.
- PVCu edge banding – ensures consistent insulation across the door surface.
These elements combine to create a door that is not only secure and durable but also significantly improves thermal performance, offering measurable energy savings in real-world conditions.
Real-world efficiency: composite vs timber
Independent testing and Energy House trials show the practical difference between composite and timber doors. Vista’s XtremeDoor is 17% more thermally efficient than timber core designs.
It outperforms traditional timber panelled doors by up to 19% in controlled testing.
For trade installers, these figures provide a robust sales proposition when specifying energy efficient doors to developers, architects, or end users. It’s no longer just about design; it’s about delivering measurable value and performance.
The trade advantages of specifying composite doors
Specifying a high-performance composite door offers installers and trade professionals several commercial advantages. These include:
- Reduced callbacks: Dimensional stability and GRP skins prevent warping, swelling, or sticking.
- Proven performance: Independent testing and Energy House data provide reassurance for specifiers and customers.
- Compliance confidence: Improved thermal performance supports Part L compliance and EPC targets.
- Futureproofing: As energy efficiency requirements tighten, composite doors remain at the forefront of innovation.
- Strong sales USP: Being able to demonstrate that a door performs six times better than timber cores builds trust and simplifies customer conversations.
For trade customers, specifying a composite door is not just about the style, glazing and hardware, it’s about delivering proven, measurable efficiency, reliability, and compliance. With its engineered core, triple seals, and GRP skin, Vista’s XtremeDoor outperforms timber in real-world testing, offering installers confidence that they’re providing a product built to last and designed to save energy.
By choosing external composite doors that combine PAS 24 security, With Part L-ready thermal performance and independently tested results, you’re delivering proven, measurable results, reliability, and compliance. Vista’s XtremeDoor outperforms timber in real world testing, offering installers confidence that they’re providing a product built to last and designed to save energy.
If you are looking to review your composite door offering, or want more information around performance and compliance, we can provide you with test data and specifications, contact our team today.
