Why Your Drains Keep Clogging (And How to Stop It)

Few things are more frustrating than clearing a clogged drain, only to have it slow down again a few weeks later. When a clog keeps coming back, the problem usually is not the clog itself. It is whatever keeps causing it in the first place.

What's Really Causing the Clog

A single clog is often just the visible symptom of a buildup that has been forming for a long time. Grease, hair, soap residue, and mineral deposits stick to the inside walls of a pipe. Each time you clear the surface blockage, the coating underneath stays behind, ready to trap the next piece of debris that comes through.

Grease and Cooking Oil

Grease is one of the most common causes of kitchen drain clogs. It goes down the drain as a liquid but cools and hardens inside the pipe, narrowing the space water can pass through. Over time, this creates a partial blockage that catches food scraps and other debris, eventually leading to a full clog.

Hair and Soap Buildup

In bathroom drains, hair combines with soap scum to form a sticky mass that clings to the inside of the pipe. A drain strainer can catch loose hair before it goes down, but soap residue builds up regardless, especially in homes with hard water, which reacts with soap to form a thicker film.

Tree Roots in Older Sewer Lines

If multiple drains in your home are slow at the same time, the issue may not be in any single fixture at all. Tree roots are drawn to the moisture inside sewer lines and can work their way into small cracks or joints, especially in older clay or cast iron pipe. This is a common issue in established neighborhoods with mature trees.

When a Plunger Isn't Enough

A plunger works by creating pressure to dislodge a clog close to the drain opening. It does very little for buildup further down the line or for blockages in the main sewer line. If plunging brings only short-term relief, the clog is likely deeper or larger than a simple home fix can handle.

Preventing Future Clogs

Running hot water after each use, avoiding pouring grease down the drain, and using a strainer in every sink and shower all help slow buildup. For drains that clog often despite these habits, a professional cleaning that reaches further into the line, rather than just breaking a hole through the clog, makes a real difference.

If a drain in your home keeps backing up no matter how often you clear it, it may be time for a deeper look. Learn more about our drain cleaning service or our hydro jetting service for a more thorough clean.