Step 4 · Clean Mounting Surface
After removing all the old faucet components from the tub deck, there will likely be a residue of old plumber's putty, silicone, or mineral deposits. Use a plastic putty knife to gently scrape away this old material. Be careful not to use a metal scraper, which could scratch the acrylic or fiberglass tub surface. Once the bulk of the residue is removed, use a non-abrasive bathroom cleaner and a soft rag to thoroughly clean and dry the entire mounting surface. A clean, smooth surface is essential for the new faucet to seal properly.