Drainage board for roof garden.
light and easy to handle.
improves the overall thermal insulation.
Drainage for roof gardens and planters.
Perforated polystyrene board.
Board dimensions: 1.20 m x 1.00 m
Thickness: 40 mm.
GRAVIDRAIN replaces the 100 mm pebble drainage layer usually specified in roof gardens and planters design, hence allowing reduction of dead loads on the structure.