It can be used as a building material with good heat preservation and sound insulation effect. Due to the low thermal conductivity, low water vapor permeability, high energy absorption and compressibility of EPP material, it is suitable for filling the voids of uneven surfaces, such as: as in the expansion joints of roofs, walls, concrete slabs, and highways. Packing, sealant holder, sealing strip, etc. EPP foam board can promote the solidification of concrete by reducing the loss of heat and moisture. Taking advantage of its low thermal conductivity, EPP foam can be used as a roof liner material for ordinary buildings. The EPP foam liner can reduce the sound transmission of multi-story buildings).