"Watch this complete shower upgrade. First, the installer removes the old shower components and shuts off the water supply. He installs a new shower valve, then uses a magnetic access panel that attaches with high strength adhesive instead of screws. These panels are becoming popular because they provide easy access to plumbing for future repairs without damaging the tile. Finally, he installs the new shower head, tightens every connection, seals the remaining joints and completes the installation."