studded drainage membrane / polystyrene / green roof drainage
green roof drainage
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.