How does saltwater exposure affect granite outdoor sofa surfaces?

Saltwater exposure can significantly impact granite outdoor sofa surfaces, leading to both aesthetic and structural changes over time. Granite, while durable, is porous and can absorb saltwater, which may cause several issues:

1. Surface Erosion: Prolonged saltwater contact can wear down the polished finish, making the granite appear dull or rough.

2. Discoloration: Salt deposits may leave white stains or streaks, especially in humid or sunny climates.

3. Mineral Leaching: Saltwater can react with minerals in the granite, weakening its structure and causing cracks or pits.

4. Mold Growth: Moisture retention from saltwater can promote mold or mildew in crevices.

To protect granite outdoor sofas in coastal areas:

- Rinse surfaces regularly with fresh water.

- Apply a high-quality granite sealer annually.

- Use covers during storms or high-salinity periods.

Understanding these effects helps maintain granite furniture’s longevity and appearance in salt-prone environments.