Cavity Wall Insulation Board – PIR – Partial Fill Cavity Walls

Product OverviewThis high-performance cavity wall insulation board is designed for use in masonry cavity wall constructions. Measuring 100mm thick and 1200mm x 450mm in size, it offers excellent thermal efficiency while being lightweight and easy to handle for quick installation.The board features a rigid polyisocyanurate (PIR) core with low-emissivity foil facings on both sides, enhancing thermal resistance and contributing to improved wall U-values. Its moisture-resistant design ensures consistent performance over the building's lifespan. Product Specifications Specification Details Application Partial Fill Cavity Wall Material Type PIR (Polyisocyanurate) Thickness 50mm Width 450mm Length 1200mm Weight 11.4kg Sales Unit Pack Sales Unit Coverage 5.94m2 Pieces Per Pack 11 Fire Rating Euroclass F Thermal Conductivity 0.022W/mK Compressive Strength 120kPa Certification BBA Approved (24/7312) Facing Low Emissivity Foil (Both Sides) Edge Square Features & Benefits High thermal efficiency: Low thermal conductivity for superior insulation. Foil facings: Improves cavity reflectivity and reduces heat loss. Lightweight design: Easy to cut and fit, reducing installation time. Moisture resistance: Minimizes water absorption for reliable performance. Durability: Maintains dimensional stability and compressive strength. Suitable thickness: Perfect for 125mm+ cavities. Applications Masonry cavity walls: Ideal for brick and block constructions. Partial-fill systems: Retains air gap while enhancing insulation. New builds and refurbishments: Suitable for both residential and commercial projects. Energy efficiency upgrades: Reduces heat loss, complying with building regulations. Installation Guidance Preparation: Ensure cavities are clean and dry. Board placement: Fit between wall ties with tight joints. Fixing method: Use retaining clips to secure boards. Joint sealing: Butt edges tightly; seal as needed to prevent thermal bridging. Protection: Keep dry and avoid prolonged sun exposure. FAQ Q: Is this board suitable for retrofitting? A: Yes, it's ideal for both new and existing buildings. Q: How does it improve energy efficiency? A: By reducing heat loss and enhancing thermal performance.