What techniques prevent biological growth on outdoor stone sculptures?

Outdoor stone sculptures are vulnerable to biological growth like algae, moss, and lichen due to exposure to moisture and environmental conditions. To prevent such damage, several techniques can be employed. Regular cleaning with mild detergents or specialized stone cleaners helps remove organic buildup. Applying water-repellent sealants creates a protective barrier against moisture absorption. Anti-algae and anti-fungal treatments can inhibit biological growth without harming the stone. Proper placement in well-ventilated, sunlit areas reduces dampness. For long-term preservation, periodic professional maintenance is recommended. These methods ensure sculptures remain visually appealing while protecting their structural integrity over time.