These functions can guarantee the waterproof effect and have advantages such as thermal preservation, heat insulation, sound insulation, easy composition and facilitating construction. 两者在屋面防水措施上均具有二次防排水的技术,为坡屋面种植屋面提供了可靠的防水保障,在此基础上还兼有保温、隔热、隔音、构造简单、施工方便等多项优点。