A tub or shower that drains slower every week is one of the most common drain complaints there is, and one of the most-discussed on plumbing forums — one thread about plunging a slow bathtub drew hundreds of replies. The good news: most slow tub and shower drains are a hair-and-soap clog within the first foot of pipe, and they can be cleared without harsh chemicals.
Why Tubs and Showers Clog
Hair is the main ingredient. On its own it would mostly wash through, but soap scum, conditioner and body oils coat it and make it sticky. The mass catches on the stopper, the crossbars in the drain opening or the linkage of a lever-style stopper, and grows from there. Each layer slows the drain a little more, which is why it feels gradual — see clogged or just slow.
Start at the Stopper
Before anything else, take out the stopper or strainer. Many pop-up and toe-touch stoppers unscrew by hand; lever-style tubs have a linkage that comes out through the overflow plate. A surprising share of "clogs" turn out to be a hair mat wrapped around the stopper itself. Clean it, put it back, and run water.
Pull, Don't Push
If the clog is just below the opening, a cheap plastic barbed drain strip or a small hand auger can grab the hair and pull it out. That's the goal: removing the clog rather than shoving it further down the pipe, where it can lodge in the trap or a fitting. Our cable snake vs. hand auger guide explains which tool suits which clog.
If You Plunge a Tub, Block the Overflow
A tub has a second opening: the overflow plate under the faucet. Plunge without covering it and most of the pressure escapes out the overflow instead of reaching the clog. Cover it with a wet rag held firmly in place, make sure there's enough water to cover the plunger cup, and use steady strokes. Still, plunging can push a clog deeper — see when plunging makes a clog worse.
Skip the Chemical Drain Cleaner
Liquid drain openers often don't dissolve a dense hair mat; they sit in the trap on top of it. That leaves a pipe full of caustic water for whoever opens it next, and repeated use is hard on older metal drain lines. If you've already used one, tell whoever works on the drain before they start.
Keep It From Coming Back
A hair catcher that sits in or over the drain is the single most effective fix, and it's worth emptying often. Linear shower drains catch hair along the grate, so lifting and clearing the grate regularly keeps them flowing. Running very hot water after a shower helps move soap residue along, though it won't clear an established clog.
When It's Not Just the Tub
A hair clog affects one fixture. If the tub backs up when the toilet is flushed or the washer drains, gurgles when other fixtures run, or several drains are slow at once, the blockage is further down the line — see washing machine backing up into the tub and is a gurgling drain serious. In Brockton's triple-deckers, a slow tub on one floor can even be a symptom of a shared-stack problem.
Tried the stopper, the strip and the plunger and it's still slow? Our clogged drain clearing service clears the line properly and tells you whether the problem is the tub or something further down.