Yes, Carmen Sintered Stone can be used in exterior applications in very humid climates. Carmen Sintered Stone is a highly durable and resistant material that is designed to withstand various weather conditions, including humidity. It has a low porosity and is resistant to moisture absorption, making it suitable for outdoor use in humid climates. However, it is always recommended to consult with the manufacturer or a professional to ensure the specific product meets the requirements and recommendations for your particular climate and application.