In all civil works, water infiltrating from foundations, from areas of contact with soil, or from unproperly waterproofed roofings, can be detrimental for the structure. While action of water on foundations or structural elements may cause safety problems, increased humidity due to water leaking from the roofs can cause serious deterioration of the inside of the building. This may also lead to safety hazard and equipment damage within the structure.

The installation of a synthetic geomembrane provides the following benefits:

- creates a barrier to possible groundwater infiltration through foundations

- avoids water infiltration from the adjacent soil

- guarantees the impermeability of the roofing

- prevents damages to retained appurtenances

- provides long-lasting protection against deterioration.

Since 1963, CARPI geomembrane systems have been installed as the waterproofing element on various roofings, including the Pope’s Nervi Hall in the Vatican. Special applications have been installed to assure protection of foundations in case of very high water table, even in severe environments.