PHOTONFRAME-A1
Breathable Multi Foil Insulation: PhotonFrame-A1
PhotonFrame-A1 is the innovative breathable version of PhotonFoil-A1, specifically designed for installation on the cold side of timber frame structures. This advanced insulation solution addresses the unique challenges associated with cold-side applications, ensuring optimal thermal performance and moisture management.
A1 Non-Combustible by Design
PhotonFrame-A1 carries an A1 non-combustible classification to BS EN13501-1, placing it in the same fire performance category as stone wool, glass wool, concrete and brick. This ensures the highest level of fire safety performance and makes PhotonFrame-A1 suitable for projects where non-combustible materials are required or strongly preferred.
Construction and Design
PhotonFrame-A1 is constructed with a high-density glass wool core, which is encased in micro-perforated woven glass and aluminium low emissivity outer layers. This design not only enhances thermal performance but also ensures excellent breathability. The micro-perforations allow moisture vapour to escape, thereby reducing the risk of condensation and promoting a healthier indoor environment. The high-density core material contributes significantly to the insulation’s effectiveness, ensuring that it meets modern energy efficiency standards.
Development for Timber Frame Housing
PhotonFrame-A1 was specifically developed at the request of our timber frame housing customers, who typically utilise PhotonFoil-A1 (a type of air and vapour control layer) on the warm side of a wall. These customers expressed a need for a breathable version that could be effectively installed on the cold side of the frame. By addressing this need, PhotonFrame-A1 provides a comprehensive insulation solution that enhances the overall energy efficiency of timber frame constructions.
Advice on installation, project support, U-value or condensation risk calculations is only a phone call away.
PhotonFrame-A1 will help you save space, time and money!

PHOTONFRAME-A1
Compatibility with Passivhaus Standards
PhotonFrame-A1 can be installed in combination with PhotonFoil-A1 to achieve Passivhaus standards of insulation. This is particularly beneficial when using regular 140mm glass-filled studs, as it allows for a highly effective insulation system that meets stringent energy efficiency requirements. The combination of these two products ensures that buildings are not only well-insulated but also capable of managing moisture effectively.
Versatility in Application
While PhotonFrame-A1 was developed primarily for timber frame new build housing, its applications extend beyond this context. It is widely used in the off-site construction of volumetric modular units, where energy efficiency and moisture management are critical for maintaining structural integrity and comfort. Additionally, PhotonFrame-A1 is suitable for use in various external wall types, including metal stud and concrete constructions, making it a versatile choice for a range of building projects.
Certification and Testing
PhotonFrame-A1 has undergone rigorous independent testing and has been certified to the latest European standards by accredited European test houses. It has also achieved LABC (Local Authority Building Control) Registered Details, confirming its compliance with UK building regulations. This certification provides confidence to builders and homeowners that PhotonFrame-A1 meets high-quality standards and performance benchmarks.
Expert Support and Resources
For those considering PhotonFrame-A1 for their insulation needs, expert guidance is readily available. Whether you require assistance with installation techniques, project support, or calculations related to U-values or condensation risks, our knowledgeable team is just a phone call away. We provide you with the information and support necessary for a successful project outcome.
By choosing PhotonFrame-A1, you are investing in a high-performance insulation solution that will help you save valuable space, time, and money while significantly enhancing the thermal efficiency and safety of your building. Its innovative design and construction make it an ideal choice for a wide range of applications, particularly in challenging insulation scenarios. With its proven performance and commitment to quality, PhotonFrame-A1 stands out as a leading solution in the field of breathable multi foil insulation, ensuring a comfortable and energy-efficient environment for years to come.
Also Available: PhotonFrame (Class E)
For applications where an A1 non-combustible solution is not required, PhotonFrame is also available in a standard Class E fire-rated multi foil insulation specification.

