What are the best adhesives for repairing cracks in outdoor stone sculptures?

Repairing cracks in outdoor stone sculptures requires adhesives that can withstand weather elements while providing strong, lasting bonds. The best products combine durability with minimal visibility after application. For structural repairs, two-part epoxy adhesives offer superior strength and gap-filling capabilities, though they may require tinting to match stone colors. Polyurethane-based adhesives provide excellent flexibility and weather resistance, making them ideal for temperature-affected environments. For smaller cracks, acrylic adhesives offer good UV resistance and clear drying properties. Specialized stone repair epoxies with mineral fillers can blend seamlessly with natural stone textures. Always clean surfaces thoroughly and follow manufacturer instructions for optimal results. Consider climate conditions, crack size, and final appearance when selecting the appropriate adhesive for your outdoor sculpture restoration project.