Alumaflex | Multi-foil insulation for walls, roofs, loft & barn conversions timber frame insulation, multi-foil insulation, thermal insulation, foil insulation, barn conversion insulation, loft conversion insulation, wall insulation, aluminium foil insulation, insulation for roofs, loft insulation, thermo reflective insulation, multilayer insulation, multi foil insulation, insulation for roofs, insulation for walls, insulation for floors, BBA approved insulation Thermal insulation for loft conversions and timber frame buildings with our easy to install BBA approved multi foil insulation. Also ideal for walls & barn conversions.