EcoPower Insulation Element for Intura SunTube
The EcoPower Insulation Element for Intura SunTube is designed to significantly improve the thermal performance of daylight tube systems. By adding a high-performance insulation element with double or triple glazing, heat loss through the diffuser is reduced while maintaining excellent natural daylight transmission.
Independent calculations confirm that the Intura SunTube system can achieve U-values as low as 0.65 W/m²K, depending on the configuration. This makes it one of the most thermally efficient daylight tube systems available today.
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Designed for energy-efficient buildings
Modern building standards increasingly require high thermal performance for roof penetrations and daylight systems.
By installing the EcoPower insulation element you can:
- Reduce heat loss through the daylight tube
- Improve the building’s overall energy performance
- Support compliance with modern building regulations
- Enhance comfort in the interior space
The insulation element works in combination with the reflective aluminium tunnel and insulated roof upstand of the Intura SunTube system, creating a well-balanced daylight and thermal solution.
Why choose the EcoPower Insulation Element?
Daylight tubes are designed to bring natural light deep into buildings. However, in highly insulated buildings such as modern homes, passive houses or energy-efficient renovations, thermal performance is just as important as daylight performance.
The EcoPower Insulation Element improves the thermal behaviour of the diffuser section, which is the part of the daylight tube directly connected to the interior space.
Improved thermal insulation
The insulation element is constructed using PIR insulation panels, aluminium tunnel connectors and high-performance glazing units, ensuring excellent durability and insulation performance.
Reduced heat loss through the ceiling diffuser
The EcoPower insulation element is available for three SunTube diameters: SunTube25, SunTube35 and SunTube55. Each version is optimised to fit the diffuser and ceiling element of the corresponding Intura SunTube system.
Compatible with double and triple glazing units
When an optional insulation element is added, these values improve significantly. With double glazing (Ug 1.1) and a thermally improved spacer, the UST values decrease to 0.93, 0.94 and 0.91 W/m²K. In the best-performing configuration, using triple glazing (Ug 0.6) and a spacer with improved thermal performance, the results reach 0.70, 0.69 and as low as 0.65 W/m²K.
Verified thermal performance
The thermal performance of the Intura SunTube system with insulation element has been independently calculated by the research institute Itecons.
The calculations were performed in accordance with:
- EAD 220021-00-0402
- ISO 10077-2:2017
- ISO 10211:2017
- French Réglementation Thermique – Règles Th-U Fascicule 3
These standards are widely used in Europe to determine thermal transmittance values of building components.
| System | Without insulation | With EcoPower Insulation element - double glazing | With EcoPower Insulation element - triple glazing |
| SunTube25 | 2.44 W/m²K | 0.93 W/m²K | 0.70 W/m²K |
| SunTube35 | 2.63 W/m²K | 0.94 W/m²K | 0.69 W/m²K |
| SunTube55 | 2.70 W/m²K | 0.91 W/m²K | 0.65 W/m²K |
These results demonstrate how the EcoPower insulation element dramatically improves the overall thermal performance of the daylight tube system.
"Intura Suntube demonstrates that a high-end daylight tube system can set the benchmark for both natural daylight and thermal performance."
Available for three Intura SunTube systems
The EcoPower insulation element is available for the most popular Intura SunTube diameters.
Frequent Asked Questions
What is a daylight tube insulation element?
A daylight tube insulation element is an additional insulated diffuser component installed in a sun tunnel system to reduce heat loss between the roof and interior space.
It improves the thermal performance of the daylight tube while maintaining excellent natural daylight transmission
How does the EcoPower insulation element improve thermal performance?
The EcoPower insulation element adds PIR insulation and high-performance glazing to the diffuser section of the SunTube. This reduces heat transfer between indoor and outdoor environments, improving the overall U-value of the daylight system.
Independent testing shows that Intura SunTube systems with insulation elements can achieve U-values as low as 0.65 W/m²K, depending on the configuration.
Is the EcoPower insulation element suitable for low-energy homes?
Yes. The EcoPower insulation element is ideal for energy-efficient homes, passive houses and modern renovations, where thermal performance of roof penetrations is important.
Upgrade your Intura SunTube today
Whether you are installing a new SunTube or upgrading an existing system, the EcoPower Insulation Element is the ideal solution to improve thermal performance while maintaining excellent natural daylight.
Combined with the highly reflective Intura SunTube tunnel system, it delivers a premium daylight solution for modern energy-efficient buildings.
Learn more about Intura SunTube
Want to know more about the Intura daylight tube systems and accessories? Explore the full range of SunTube daylight solutions and insulation upgrades available on Intura.co.uk