Step 5 · Fill Nail Holes and Caulk Seams
Once the molding is securely installed, use wood filler or spackling compound to fill all brad nail holes. Apply the filler with a putty knife, pressing it into the holes. Allow the filler to dry completely according to the product instructions. Once dry, lightly sand the filled areas smooth, being careful not to damage the molding. Next, apply a thin bead of paintable caulk along all seams where the molding meets the wall and at the inside and outside corners. Smooth the caulk line with a damp finger or a caulk tool for a clean, gap-free finish.