Irans Birjand Marble is known for its durability and resistance to weathering, making it suitable for exterior applications in various climates. However, when it comes to very rainy climates, there are certain factors to consider:
1. Porosity: The porosity of the Birjand Marble should be taken into account. If the marble has a low porosity and is properly sealed, it can withstand rainy climates better as it will be less prone to water absorption.
2. Water resistance: The water resistance of the marble should be evaluated. If it has good water resistance, it will be less prone to damage from moisture and rainfall.
3. Freeze-thaw cycles: In areas with very rainy climates, freeze-thaw cycles can occur, where moisture seeps into the stone and freezes, causing expansion and potential cracking. It is important to ensure that the Birjand Marble has good resistance to freeze-thaw cycles to avoid damage.
4. Maintenance: Regular maintenance and sealing of the marble may be required in rainy climates to enhance its longevity and protect it from water damage.
In conclusion, while Irans Birjand Marble is generally durable and suitable for exterior applications, its performance in very rainy climates will ultimately depend on factors like porosity, water resistance, and resistance to freeze-thaw cycles. It is advisable to consult with marble experts or suppliers to ensure the specific marble variant is suitable for the intended use.