Step 6 · Fill Nail Holes and Caulk Gaps
Using a putty knife, apply wood filler to all visible nail holes, pressing it in firmly. Allow the filler to dry according to the manufacturer's instructions. Once dry, sand the filled areas smooth. Apply a bead of paintable caulk along all seams where boards meet battens, and where boards meet any existing trim or the ceiling. Smooth the caulk line with a damp finger or caulk tool.