The Roemer Tuff, also known as the Roemer Stone, is a type of limestone that is mainly used for interior applications due to its softness and susceptibility to weathering. While it may be possible to use it for exterior applications in hot climates, it is not an ideal choice.

The hot climate, combined with the limestones susceptibility to high temperatures, can result in accelerated weathering, color fading, and surface deterioration. The stone is more prone to erosion and discoloration due to exposure to outdoor elements such as sunlight, moisture, and temperature fluctuations.

It is generally recommended to choose a more durable and weather-resistant material, such as granite or sandstone, for exterior applications in hot climates. These materials can better withstand the harsh conditions and maintain their appearance over time.