SF19BB is SuperFOIL’s first fully breathable insulation for use in roofs and walls. It is a high performance and very competitive breathable insulation. SF19BB's new construction and design outperform other manufacturers with its excellent R value of R 2.53 for a wall and R2.22 for a roof. Breathable Insulations save on time and materials by providing both the secondary rain barrier breathable membrane and insulation at the same time, this can reduce installation time and save on extra battens. Benefiting from advanced sonic construction techniques and advanced lamination developments and nano technology. SF19BB is creating better options for solutions as low as U0.10. SF19BB comes in new convenient rolls that are 1.2m wide by 10m long, of 12 square meters. Properties Length: 10m.Width: 1.2m.Roll size: 12m2.Thickness installed: 40mm.Weight per roll: 8kg.Thermal Resistance - rValue: 2.53m2K/W.In the Roof: r2.22m2K/W.In the Wall: r2.53m2K/W.Core Thermal Resistance - rValue: 1.45m2K/W.Watertightness: W1.Water vapour resistance: 0.115MNs/g. Layers Perforated reinforced heavy duty outer reflective foil: 1x layer.Aluminium coated breather membrane: 1x layer.Perforated aluminium coated reflective foil PET: 3x layers.Loft quilt: 4x layers.Total layers: 9x layers. Application Air seal & radiant barrier.Building regs compliant.Horizontal or vertical fitting.Install with air gaps.Cut with knife or scissors.