Drainage board is an important part of roof greening system and plays a role in storing and draining water. Storage and drainage board is a kind of light board made of HDPE or PP by means of heating, pressurization and sizing, which can not only create a drainage channel with certain stereo space support stiffness, but also is able to impound water.
This kind of Drainage Cells integrates the functions of storage and drainage of water. It is featured by very high space stiffness and more superior resistance to pressure (which may be proved by field test) compared to other similar products. It can also bear a high pressure load of more than 400Kpa and extreme load resulting from mechanical rolling on the planting roof during the process of back filling.
As HDPE is used as the main material, waterproof drainage board is characterized by high compression strength, corrosion protection, acid and alkali resistance, resistance to plant roots puncture and is not easy to decompose with a service life of more than 50 years. HDPE Drainage Cells is a kind of high-durability waterproof drainage material less influenced by external factors, which will not cause damage to underground water and ecological environment, and will not impair human health and environment.
Features of Storage and Drainage Boards
1. Convenient construction, simple and economical maintenance;
2. Strong load resistance and durability;
3. Rapid drainage of excessive water;
4. Part of the water can be stored through the storage components.
5. Adequate moisture and oxygen can be provided for the plants;
6. Light in weight, strong roof heat insulation and preservation.