Drainage foundation film made of high density polyethylene (HDPE) or parallel embossing system 20 mm high with additional perforation. Primarily intended for creating waterproofing of buildings in a horizontal arrangement while creating "green roof in". It is very resistant to crushing, high embossing and perforation give additional water drainage capacity, while high embossing during drought periods serves as a water reservoir. In addition, it creates a layer of thermal and sound insulation. It is resistant to acid, alkali, solvent, bacteria, fungus and plant roots.

GEO 20 GARDEN drainage foundation film is used in residential and industrial construction to create waterproofing in the so-called green roofs and terraces. Used as horizontal insulation, it is laid on the insulated surface with embossing upwards, thanks to which it creates a suitable drainage surface that drains excess water during periods of intense rainfall. At the same time, high extrusions during periods of drought play the role of a reservoir in water supplying vegetation with the necessary amounts of water.