Stone sculpture assembly and repair require durable adhesives that can withstand environmental stress while preserving artistic integrity. The most commonly used binders include epoxy resins, polyurethane adhesives, polyester resins, acrylic-based compounds, and traditional lime mortar.

Epoxy resins are favored for their high strength and water resistance, making them ideal for outdoor sculptures. Two-part epoxies provide a permanent bond and can be tinted to match stone colors. Polyurethane adhesives offer flexibility, allowing slight movement without cracking—useful for sculptures exposed to temperature fluctuations.

Polyester resins, often used with fiberglass, are cost-effective for large repairs but may yellow over time. Acrylic-based adhesives are lightweight and UV-stable, suitable for delicate stonework. Traditionalists still use lime mortar for historical restoration, though it lacks modern adhesives' instant bonding strength.

For invisible repairs, conservators opt for stone dust-filled epoxies that mimic natural textures. Always test adhesives on inconspicuous areas, as some chemicals may stain porous stones like marble or limestone. Proper surface preparation—cleaning, degreasing, and roughening—ensures optimal adhesion regardless of the chosen binder.