When designing a garden roof system, a filter fabric is required to hold the growing medium in place. If this element is left out, the growing medium will clog the garden roof drainage, leading to a premature and expensive replacement.
When designing a garden roof system, a filter fabric is required to hold the growing medium in place. If this element is left out, the growing medium will clog the garden roof drainage, leading to a premature and expensive replacement.
DELTA®-BIOTOP is a filter fabric designed for use with perforated drainage and water retention boards, such as DELTA®-FLORAXX, in a Garden Roof System.
DELTA®-BIOTOP is the primary growing medium control layer to the system. It helps hold the growing medium in place, preventing clogging of the cups in the drain board, while allowing water to flow through it. In addition, DELTA®-BIOTOP keeps the growing medium in place, enhancing the water-retention capacity of DELTA®-FLORAXX.