How to Unclog a Shower Drain (A Utah Plumber's Step-by-Step Guide)
A slow shower drain that leaves you standing in ankle-deep water is one of the most common plumbing annoyances — and one of the most fixable yourself. Here’s how a licensed Utah plumber clears a shower drain, what’s worth trying, what to skip, and how to tell when it’s actually a bigger problem hiding behind a small symptom.
Why Shower Drains Clog
Almost every shower clog comes down to the same thing: hair binding with soap scum into a mat that catches everything else. In Utah, hard water makes it worse — mineral content helps soap scum cling to pipe walls, so clogs build faster here than in soft-water regions. Our Utah hard water guide explains why.
The clog almost always forms within a few inches of the drain opening, which is good news — it means you can usually reach it.
Step 1: Pull the Hair Out by Hand
Remove the drain cover (it either unscrews or pries off), then go after the clog directly:
- Use a bent wire hook or an inexpensive plastic hair-clog tool — the barbed strips sold at any hardware store
- Push it past the clog, twist, and pull the tangled hair and gunk straight up
- Repeat until you stop pulling up debris
This is the single most effective home method. It’s not glamorous, but it removes the actual cause instead of just loosening it.
Step 2: Flush With Hot Water
Once the hair is out, run hot tap water down the drain for a minute to wash away the remaining soap scum. A baking soda and vinegar flush beforehand can help break down the greasy film — pour in half a cup of baking soda, then a cup of vinegar, wait 10 minutes, then flush.
A note on boiling water: it’s fine for metal pipes, but it can loosen glued joints on PVC drain lines. Hot from the tap is the safer choice.
Step 3: Snake It if It’s Still Slow
If water still pools, the clog is deeper than you can reach by hand. A drain snake (auger) — a flexible cable you feed into the pipe, turn to catch the clog, and pull back out — will reach it. Hand augers are cheap and work well for shower drains.
If you snake it and the water still won’t go down, stop. A clog that resists a snake usually means something further down the line. Our comparison of hydro jetting vs. drain snaking explains when a deeper clearing method is the right call.
What to Skip: Chemical Drain Cleaners
We tell every customer the same thing: avoid liquid chemical drain cleaners on a shower clog.
- They rarely dissolve hair, which is what the clog actually is
- They can corrode older metal pipes from the inside, especially if the clog holds them in place
- Leftover chemical in a standing pipe is a hazard for whoever clears it next — including us
They promise an easy fix and usually deliver a pipe full of caustic liquid still sitting on top of the clog.
When It’s Not the Shower at All
Here’s the one that catches people: if your shower is slow and your toilet gurgles, and the sink backs up — the problem isn’t the shower drain. It’s the main sewer line that all those fixtures share.
In older Utah neighborhoods, the usual cause is tree roots growing into the line at the pipe joints. No amount of plunging or snaking the shower will fix it. That needs a sewer camera inspection to see what’s going on and a professional drain cleaning or sewer repair to clear it.
When to Call Us
Call a plumber if the drain won’t clear after you’ve pulled the hair and snaked it, if multiple drains are slow at once, or if you smell sewage. Those point to a line problem, not a surface clog.
H&M Plumbing handles drain cleaning and sewer work across Utah County, Salt Lake County, and Park City. If your shower won’t drain and you’re out of patience, call (801) 787-6905 — we’ll clear it and find out why it happened.