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Why Your Drains Keep Clogging — Even After You Clean Them

Clogged drains are more than a nuisance — they slow down your entire home and lead to expensive repairs if left unchecked. If you’ve ever cleaned a drain only to find it backing up again days or weeks later, you’re not alone. 

At Priority Plumbing and Restoration, we often see recurring clogs caused by deeper issues that simple cleaning can’t fully resolve. 

Here’s what might really be going on.

You’re Clearing the Symptoms, Not the Source

Most DIY drain cleanings remove surface-level buildup like hair or food scraps. But deep inside your pipes, layers of grease, soap scum, and mineral deposits continue to narrow the passage. Over time, the drain clogs again because the root issue never went away.

Pro Tip: Use enzyme-based drain cleaners monthly to break down organic buildup. They’re gentle on pipes and more effective over time than harsh chemical cleaners.

For more on preventing clogs without harsh chemicals, read our guide: How to Prevent Clogged Drains Without Harsh Chemicals

Old or Damaged Pipes Restrict Flow

If your home has older plumbing, things like corrosion, cracks, or pipe misalignment may be trapping debris. Even with regular cleaning, these damaged areas collect buildup quickly.

Signs this may be the problem:

  • Frequent clogs in multiple fixtures
  • Slow drains despite recent cleaning
  • Gurgling or unusual odors

In these cases, only a professional inspection — often using a camera — can pinpoint the damaged section.

If you’re experiencing water pressure issues, learn what the cause may be here: Water Pressure Problems? Here’s What Could Be Causing It

Tree Roots Could Be Invading Your Sewer Line

If your yard has large trees, their roots may be growing toward the moisture in your sewer line. Tiny cracks allow roots to enter and expand, causing backups that return even after repeated cleaning.

This issue requires professional root removal and repairs to prevent long-term damage.

Your Plumbing System Needs a Professional Deep Clean

Sometimes, drains re-clog simply because household tools can’t fully clear what’s happening deeper in the system. Hydro jetting — using high-pressure water to scour the inside of your pipes—removes years of buildup in a single service.

If you’ve been battling the same clog for months, a deep clean may be the reset your system needs.

Want resources on common plumbing issues, how they lead to water damage, and preventative maintenance? We’ve got you covered: 

Don’t Fight the Same Clog Twice

Recurring clogs are almost always a sign of deeper plumbing issues. With Priority Plumbing and Restoration, you get expert diagnostics, lasting solutions, and peace of mind. Whether it’s aging pipes, stubborn buildup, or hidden sewer line damage, our team can identify the true cause and restore your drains for good.

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