Under floor insulation panel are water resistant insulatedtile backer boards made of extruded polystyrene, faced onboth sides with a fibreglass mesh embedded into a thincement polymer mortar.These can be used as a structural tile backer board in thefloor.XPS Insulation Boards will save you money when usedin conjunction with undertile heating by acting as a veryefficient thermal barrier. They reflects the heat upwardsinto the floor tile instead of allowing heat to warm up theconcrete slab below.FEATURE:The boards are waterproof and dimensionally stablelow weight,one board(1200*600*10mm) is around 1.8KGeasy to cut(by knife)excellent for wet roomsexcellent sound insulationcolor of the XPS foam board can be blue,pink, light yellowNormal size: (Length: 1200mm / Width: 600mm / Thickness:10mm )we also can produce based on your requiremens or samples.Accessaries: fiberglass reinforcement tape, washers,screwscan be provided as well