Step 5 · Clean and Prepare Pipe Stub-Out
Once the old hardware is removed, thoroughly clean the end of the copper pipe stub-out. Use a piece of emery cloth or fine-grit sandpaper to polish the last inch of the pipe, removing any oxidation, old sealant, or burrs. The surface should be smooth and shiny. This ensures the new ferrule can create a perfect, watertight seal. Wipe the pipe clean with a dry rag to remove any dust or debris.