Chemical weathering is a major threat to stone sculptures, causing irreversible damage over time. To preserve these artistic and historical treasures, several effective strategies can be implemented.

1. Apply Protective Coatings: Specialized sealants, such as siloxane or acrylic resins, create a barrier against moisture and pollutants. These coatings repel water while allowing the stone to breathe, reducing chemical reactions.

2. Control Environmental Exposure: Limiting exposure to acid rain, industrial emissions, and humidity is crucial. Installing shelters or relocating sculptures indoors can significantly slow chemical degradation.

3. Regular Cleaning: Gentle cleaning with pH-neutral solutions removes harmful deposits like sulfates and nitrates before they penetrate the stone. Avoid harsh chemicals that accelerate weathering.

4. Use Anti-Pollution Treatments: Advanced treatments, such as photocatalytic coatings, break down pollutants on the surface, preventing chemical reactions that erode the stone.

5. Monitor and Maintain: Regular inspections help detect early signs of weathering. Prompt repairs and reapplications of protective measures ensure long-term preservation.

By combining these methods, the lifespan of stone sculptures can be extended, safeguarding cultural heritage for future generations.