Remove the drain stopper. Boil a full kettle of water. Pour it directly down the drain in a slow, steady stream. This melts soft soap buildup and breaks down greasy residue.
A manual drum auger (snake) costs about $20. Feed the coiled end into the drain while cranking the handle. When you hit resistance, you’ve found the clog. Crank harder to break it up or hook it to pull it out. This is the professional’s first tool. Level 3: The Overflow Plate Trick This is the step most homeowners miss. Your bathtub has an overflow drain (the round plate under the spout). The drain stopper mechanism is often attached to a spring or rocker arm behind this plate. bathtub blockage
If you have snaked the main drain and the tub still won't drain, remove the two screws on the overflow plate. Pull the linkage out carefully. You will often find a massive ball of hair wrapped around the mechanism. Clean it off, reinsert, and test the water flow. Nine times out of ten, this is the hidden culprit. If you have tried boiling water, baking soda, the zip-it, and cleaned the overflow linkage, and you still have standing water after 30 minutes, you likely have a vent stack issue or a deep main line clog . Remove the drain stopper
There is a special kind of frustration that comes from standing in a bathtub only to realize the water is rising faster than you can wash. That murky pool around your ankles isn't just an annoyance; it’s a signal. A slow-draining tub is the first warning of a bathtub blockage, a problem that will eventually lead to standing water, unpleasant odors, and potentially expensive plumbing bills. This melts soft soap buildup and breaks down greasy residue