Caulking a tile shower involves sealing the joints between tiles using a caulking gun and a specialized sealant, such as silicone or acrylic. Proper caulking prevents water leakage, mildew growth, and maintains the shower’s aesthetic appeal. Essential tools include a caulking gun, grout float, utility knife, and a caulking removal tool. The process involves preparing the surface, applying the caulk, and smoothing it for a seamless finish.