Drains

Why the same drain keeps clogging (and what finally fixes it)

A drain that clogs once is an accident. A drain that clogs every few months is telling you something about the pipe itself.

May 13, 20265 min read

Snaking makes a hole, jetting cleans a pipe

A cable punches through a blockage and restores flow. That is genuinely the right tool for a one-off clog. What it does not do is remove the grease, soap, and scale coating the pipe wall — which is exactly what the next clog builds on.

Hydro-jetting uses high-pressure water to strip the pipe back to bare wall. In a kitchen line with a hardened grease ring, that is the difference between three months and three years of clear drainage.

When the problem is not a clog at all

Gurgling drains, slow tubs, and traps that empty themselves are usually venting problems. If air cannot enter the drain system properly, the draining water pulls it through the nearest trap instead — which is also how sewer odor gets into a bathroom.

This is common in homes with remodeled kitchens and added basement bathrooms, where a fixture was moved without extending the vent. No amount of snaking fixes a venting problem.

Structural causes we find with a camera

A belly — a settled low section holding standing water — collects waste at the same spot every time. Common on flat lots with long shallow laterals.

An offset joint or partial collapse catches solids on the lip. Roots at a joint do the same thing, and they grow back on a seasonal schedule.

Undersized branch drains, especially on bathrooms added later, simply cannot carry what is being asked of them.

What we recommend by symptom

One fixture, first time: cable it and keep an eye on it.

Same fixture, second time in a year: jet it, and camera it if it is a main branch.

Multiple fixtures at once, or a floor drain backing up: that is a main line issue and deserves a camera before anything else.

Gurgling and odor without a slow drain: check venting, not the drain.

Want a plumber to look at it instead?

We cover Davis, Weber and Salt Lake counties from our West Point shop, 24 hours a day, 7 days a week for emergencies.

More on drain cleaning

Questions we get on this

For sound cast iron and clay, yes, at appropriate pressure. That is exactly why we camera first — if the pipe wall is already compromised, jetting is not the right tool and we will tell you so.

Rarely, and they can hurt. They generate heat, damage older pipe and seals, and often leave a caustic pool for whoever opens the trap next. Mechanical clearing is safer and works.

For a household that cooks heavily, every two to three years keeps the grease ring from ever establishing itself.

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