It is unclear whether United States Ice Flower Soapstone can be used for exterior applications in cold climates without further information. The suitability of this soapstone for outdoor use will depend on its specific composition, density, and resistance to temperature changes, freeze-thaw cycles, and weathering. It is recommended to consult with soapstone suppliers or manufacturers to determine if this particular type of soapstone is appropriate for exterior applications in cold climates. Additionally, proper installation methods and maintenance practices should be followed to ensure durability and longevity in these conditions.