Yes, Irans Andezit Grey Andesite can be used for exterior applications in hot climates. Andesite is a volcanic rock that is known for its durability and ability to withstand varying weather conditions, including high temperatures. It has low porosity, which means it is less likely to absorb heat and can resist cracking or warping due to thermal expansion. Therefore, it is suitable for use in hot climates where it will be exposed to direct sunlight and high temperatures.