Tub and shower diverters: the leak you only see when you switch

Most bathroom pre-walks run the tub faucet, glance at the drain, and move on. The miss is the diverter: pull it to shower mode and water sprays from the tub spout connection, the valve stem, or behind the wall plate — a leak that only exists in the mode nobody tested. Under NSPIRE, plumbing leaks are cited where they are found, and a diverter leak is a genuine leak, not a quirk. Add ten seconds to every bathroom walk: run the tub, switch to shower, run it again, and look at the spout and handles while it is under pressure in both modes. What is the sneakiest bathroom leak your team has caught this way? — Admin