How does the water absorption rate of marble impact its frost resistance?

The water absorption rate of marble plays a critical role in determining its frost resistance. Marble, a porous natural stone, absorbs water to varying degrees depending on its density and composition. When water penetrates the stone and freezes, it expands, creating internal pressure that can lead to cracking, spalling, or structural weakening over time.

High water absorption rates make marble more susceptible to frost damage, as more water is retained within its pores. In contrast, marble with low absorption rates resists frost better because less water is available to freeze and expand. Factors like surface sealing, density, and mineral composition also influence performance.

For outdoor applications in cold climates, selecting marble with low water absorption is essential to ensure longevity. Proper sealing and maintenance can further enhance frost resistance, making marble a durable choice despite environmental challenges.