Roof garden pool at the bottom with pebbles, pebbles above with geotextile, geotextile above the soil
Should be installed drainage board it! Geotechnical material manufacturers to answer!
Geotextile laying on the soil can be, goose soft stone has replaced the effectiveness of the drainage board. Geotextile play a filtering effect, the excess water through the cloth, go through goose soft stone flow. Soil is geotextile interception, will not be lost, plug the drain, Huazhi geotextile material manufacturers.
