A membrane liner in the biogas silo forms a watertight seal that separates the contents from the base and the wall. A liner is not only used in new situations, but also for the renovation of existing silos.
The type of membrane to be used is determined by the chemical properties of the silo’s contents, but usually the high-quality fibre-reinforced Genatex® 850 PVC membrane or the extremely durable EPDM membrane is used.