How does saltwater spray affect coastal stone outdoor armchairs?

Coastal stone outdoor armchairs are exposed to harsh marine conditions, particularly saltwater spray, which can significantly impact their durability and appearance. Saltwater contains corrosive minerals that accelerate the erosion of stone surfaces, leading to pitting, discoloration, and structural weakening over time.

The constant exposure to salt spray causes chemical reactions in the stone, breaking down its natural composition. Porous stones, such as limestone or sandstone, are especially vulnerable as they absorb moisture and salt crystals, which expand and contract with temperature changes, causing cracks and flaking.

To mitigate damage, regular cleaning with fresh water and sealing the stone with a protective coating can help. Choosing dense, salt-resistant stones like granite or basalt for coastal furniture also improves longevity. Understanding these effects ensures better maintenance and preservation of your outdoor stone armchairs in marine environments.