Step 4 · Clean and Prepare the Pipe
With the old spout removed, you will see the pipe stub-out. Use a putty knife and a rag to meticulously clean any old plumber's putty, caulk, mineral deposits, or sealant from both the wall surface around the pipe and the pipe itself. For a thread-on installation, pay special attention to cleaning the pipe threads. A clean surface is essential for the new spout to seal correctly against the wall and prevent leaks.