Can ceramic fiber insulation materials be used in swimming pools or spas?

Ceramic fiber insulation materials are not typically used in swimming pools or spas. These materials are designed for high-temperature insulation applications, such as industrial furnaces and boilers, and are not suitable for environments involving water or direct contact with people. Instead, swimming pools and spas usually utilize materials like foam insulation boards, rigid foam insulation, or closed-cell spray foam insulation, which are waterproof and designed to withstand the conditions found in aquatic environments.