Garage top back to the soil before the drainage board geotextile take what role
The top surface of the drainage board glue a layer of geotextile filter to prevent the passage of soil particles, so as to avoid drainage channel obstruction of the drainage channel, said white is to do a filter layer, the water discharged to the designated location, the traditional process is Block ah, stone ah, what do the water layer, and now with the drainage board is not the reason for the stone is the drainage board is plastic, light weight, can reduce the load of the building. Manufacturers of drainage board geotextile waterproof board
