nidaplast® 8 is water resistant, making it a sought-after core material in the boating industry. If the skin of a sandwich panel with a Nidaplast core is perforated accidently, the core will not rot or swell. nidaplast® 8 polypropylene honeycomb has very good mechanical properties and will not delaminate under fatigue. It is the perfect core material to use for the central platform of a large daycharter catamaran, for example.