防水背襯板是新型裝修基層板材，它是以擠塑聚苯乙烯為，表面覆蓋玻璃纖維網和特殊配方的高分子聚合物砂漿涂層等。芯材以藍色泡沫為，可以阻止水蒸氣的傳播，耐堿性玻纖網格布增加了強度和剛性，表面的聚合物砂漿涂層可以與任何改性聚合物砂漿、瓷磚膠或者其它涂飾底料完全兼容。適用范圍涵蓋屋面、衛生間，地下室、外墻、地下管廊及隧道等建筑防水場景。

The waterproof backing board is a new-type decoration base board. With extruded polystyrene as its core, its surface is covered with glass fiber mesh and a high-molecular polymer mortar coating with a special formula. The core material takes blue foam as the core, which can prevent water vapor transmission; the alkali-resistant glass fiber mesh enhances its strength and rigidity; and the surface polymer mortar coating is fully compatible with any modified polymer mortar, tile adhesive or other finishing primers. Its application scope covers building waterproofing scenarios such as roofs, bathrooms, basements, exterior walls, underground utility corridors and tunnels.