Ships and offshore installations exposed to harsh environments and constant movement such as wind and waves will flex beyond the tolerances of some of the materials installed. These movements cause cracks and fissures in some flooring materials. Concrete-based screeds used in wet areas such as galleys, cold stores and bathrooms have a high potential for costly maintenance.
Cracks caused by movement develop further when exposed to water ingress. Water penetrates the screed and reaches the underlying steel, which begins to corrode. Corrosive products will further deteriorate the screed, and the moisture will contribute to the growth of bacteria in locations with stringent hygiene requirements.