Outdoor stone sculptures are vulnerable to pitting, a common issue caused by weathering, pollution, and biological growth. To preserve their beauty, follow these proven prevention methods:

1. Regular Cleaning – Use a soft brush and pH-neutral cleaner to remove dirt, algae, and pollutants. Avoid harsh chemicals that erode the stone.

2. Apply Protective Sealants – High-quality penetrating sealants create a barrier against moisture and contaminants. Reapply every 1-3 years depending on climate conditions.

3. Control Environmental Exposure – If possible, relocate sculptures to sheltered areas or use protective covers during extreme weather.

4. Prevent Biological Growth – Treat surfaces with eco-friendly algaecides or fungicides to inhibit moss and lichen buildup.

5. Inspect and Repair Early – Check for minor cracks or chips and repair them promptly to prevent water infiltration, which accelerates pitting.

By combining these strategies, you can significantly extend the lifespan of outdoor stone sculptures while maintaining their original appearance.