The materials used in the modules are of the highest quality FRP, similar to the material used in marine structures and industrial storage tanks, as long as the instructions of the technical installation manual are strictly adhered to, and all additional materials (sealants, fasteners, waterproofing, geo-textiles) are used according to specifications, you can expect a lifetime of use with very little maintenance. With the passage of time, the necessary maintenance or repairs required are minimal and simple to address. The soil, grass, and plant covering protects the structure from UV rays from the sun and adverse weather conditions.