Premium Insulated Loft Boarding System
Insul91 Loft Boards provide a practical way to improve loft insulation while creating useful storage space at the same time. Designed for non-habitable domestic lofts, each board combines a 75mm graphite-enhanced EPS insulation core with durable OSB/3 facings, giving you insulation and a strong, stable boarding surface in one system.
The graphite-enhanced EPS helps improve thermal performance without taking up unnecessary space, making Insul91 particularly useful where you want to retain or create loft storage while improving the energy efficiency of your home.
Each panel features an integrated connecting spline joint, helping the boards line up accurately during installation while improving joint strength, stability and load distribution across the loft joists.
Lightweight and easy to handle, the boards can also be cut on site where required, helping to make installation quicker and more straightforward. By combining insulation and loft boarding in a single product, Insul91 reduces the need to install separate layers of insulation and decking.
Suitable for homeowners and professional installers, Insul91 offers a cost-effective alternative to traditional loft boarding where additional insulation and practical storage are both required, without the cost and disruption of a full loft conversion.
Product Details
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Pack quantity: 72 boards
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Board dimensions: 1200mm (L) x 295mm (W) x 91mm (T)
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Pack coverage: 25.48m²
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Insulation: 75mm graphite-enhanced EPS
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Board facing: Durable OSB/3
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Joint system: Connecting spline for easier installation and alignment
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Typical U-value: Approximately 0.36 W/m²K
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Guarantee: 15 years
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Application: Non-habitable loft storage and insulation upgrades
Features & Benefits
High Thermal Performance in a Slim Profile
The 75mm graphite-enhanced EPS insulation provides excellent thermal performance, achieving a typical U-value of approximately 0.36 W/m²K.
Insulation and Loft Boarding in One System
Combining structural boarding and insulation into a single panel helps reduce installation time and the amount of material that needs to be handled on site.
Graphite EPS for Improved Efficiency
Insul91 uses Stylite PlusTherm graphite EPS, which provides improved thermal performance compared with standard white EPS insulation of the same thickness.
Secure Connecting Spline Joint
The integrated spline joint helps keep adjoining panels accurately aligned while improving joint strength, stability and load distribution across the loft joists.
Lightweight and Easy to Install
The panels are lightweight, easy to handle and can be cut on site, helping to speed up installation and reduce the amount of labour required.
Durable OSB/3 Facings
Strong OSB/3 boards provide a stable, load-spreading surface for everyday loft storage and are suitable for load-bearing applications in both dry and humid conditions.
Cost-Effective Loft Upgrade
Insulation and boarding are combined into one product, providing a practical and cost-effective alternative to installing separate insulation and loft flooring systems.
Designed for Non-Habitable Loft Spaces
Insul91 is specifically designed for loft storage and insulation upgrades, helping you make better use of unused loft space without the complexity or expense of converting it into a habitable room.
