Recticel Eurowall Cavity 100mm x 1200 x 450

The Recticel Eurowall® Cavity Insulation Board is a high-performance rigid PIR board for partial fill cavity wall insulation in masonry construction. It is fixed against the inner leaf with a clear residual cavity left to the outer leaf, and suits walls designed around a wider cavity where a high level of thermal resistance is needed from the board layer. At 100mm the board provides a thermal resistance (RD) of 4.50m²K/W with a declared thermal conductivity of 0.022W/mK. Because it is a deep board, the cavity has to be wide enough to take the board and still leave the clear residual gap, so the cavity width and overall wall build-up should be confirmed at design stage before specifying. Both faces carry a gas diffusion tight multilayer foil with a low-emissivity grid pattern (ε 0.05), which adds thermal resistance across the residual cavity when installed in a non-ventilated build-up. The straight edges on all four sides let boards butt closely so gaps and thermal bridging through the insulation layer are kept down. The closed-cell PIR core absorbs little moisture, so the board holds its thermal performance over the life of the wall. It can be cut with a fine-toothed saw or sharp knife and suits both new build and renovation work. Install in line with the latest Recticel technical guidance, project specification and relevant building requirements. Specifications Thickness: 100mm Board Size: 1200mm x 450mm Coverage: 5.4m² per board Thermal Conductivity: 0.022W/mK Application: Roofs, Walls & Floors. Including underfloor heating systems Material: Polyisocyanurate (PIR) Density: 30+kg/m³ Fire Rating: Euroclass F Edge Type: Square Facing: Low Emissivity Foil Weight: 3.65kg/m²