Low Price Foam Waterproof Insulation Board With Good QualityLow price foam waterproof insulation board with good quality is made of extruded polystyrene, faced on both sides with a
fiberglass mesh embedded into a thin cement polymer mortar, it has a 0.5mm coating on either side. It widely used in the
under floor heating system as a structural tile backer boards. The boards also can be used in the floor, wall and ceiling
by acting as a very efficient moisture and thermal barrier.