Step 5 · Apply New Caulk
Insert the prepared caulk tube into the caulk gun. Place the tip of the nozzle at the beginning of the seam at a 45-degree angle. Apply steady, even pressure to the caulk gun trigger, moving the gun smoothly along the seam to create a consistent bead of caulk. Aim to fill the gap completely without excessive overflow. Overlap slightly at the start and end of each section.