What protective sealants are recommended for stone sculptures exposed to coastal climates?

Stone sculptures exposed to coastal environments face unique challenges from salt spray, high humidity, and intense UV radiation. To protect these artworks, experts recommend using penetrating, breathable sealants that resist salt damage while allowing moisture vapor to escape. Siloxane-based sealers are particularly effective as they form a hydrophobic barrier that repels water and salts without trapping internal moisture. Fluoropolymer coatings offer exceptional UV stability and durability against weathering. For limestone or sandstone, consolidating sealants with ethyl silicate can strengthen the surface. Always choose sealants specifically formulated for marine environments, apply in dry conditions, and reapply every 3-5 years for maintained protection. Avoid acrylic or non-breathable sealants that may cause subsurface damage in salty, moist conditions.