Metal sculptures, especially those displayed outdoors, are vulnerable to biological growth like moss, algae, and even insect infestations. To combat this, artists employ several proven techniques. First, they choose corrosion-resistant metals such as stainless steel, bronze, or corten steel, which naturally deter organic buildup.

Protective coatings play a crucial role. Artists apply specialized sealants, waxes, or powder coatings to create a barrier against moisture and organic matter. Regular maintenance, including cleaning with mild detergents or pressure washing (at low settings), helps prevent spores and pests from taking hold.

Some sculptors incorporate design elements like sloped surfaces to discourage water pooling, while others use copper alloys for their natural antimicrobial properties. For extreme climates, galvanization or anodizing provides additional protection.

Innovative artists even embrace controlled patinas, which not only add aesthetic appeal but also form a protective oxide layer. By combining material science with artistic foresight, modern sculptors ensure their creations remain pristine for generations.