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Plumbing guide

Drain Cleaning: Causes, Fixes, and When to Call

Most drain problems fall into three buckets: a single fixture-level clog, a branch line clog affecting a few fixtures, or a main line problem affecting the whole house. Knowing which one you have determines whether a plunger is enough or whether a plumber and a camera are needed.

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What actually clogs a drain

  • Kitchen lines: cooking grease, food scraps, and coffee grounds bonded to pipe walls
  • Bathroom sinks and tubs: hair combined with soap scum
  • Toilets: excess paper, wipes marketed as flushable, or foreign objects
  • Main lines: tree roots, collapsed sections, or long-term buildup in older cast iron

Signs it is a main line, not a single drain

  • Multiple fixtures back up at once, tub gurgles when the toilet flushes
  • The basement floor drain overflows when a washer drains
  • Sewage smell near a basement drain
  • Recurring backups no matter how many times a single drain is cleared

Methods a plumber will use

For a fixture clog, hand augering or a small drum snake usually clears it. For a branch line, a longer cable machine is used. For a main line, a heavy-duty cable and often a camera inspection to see the actual cause before recommending further work. Hydro-mechanical cleaning is used when grease or scale coating needs to be removed rather than just punched through.

What to try first, safely

  • Plunger with a good seal for toilets and sinks
  • Boiling water down a kitchen sink to loosen grease
  • Remove and clean the trap under a bathroom sink
  • Skip liquid drain chemicals, they rarely fix the actual clog and can damage older pipes

Preventing repeat clogs

  • Do not pour cooking grease or fat down the drain, jar it and throw it out
  • Use a hair catcher in showers and tubs
  • Flush only toilet paper, not wipes, paper towels, or feminine products
  • For older homes with cast iron drainage, occasional preventative cleaning saves emergency calls

Need a plumber?

A specialist assesses the problem on site before any repair work is priced. Repair options and pricing are explained before approved work begins.

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Frequently asked questions

Are wipes actually flushable?

Most are not, even when labelled that way. They do not break down like toilet paper and are one of the most common causes of drain backups.

Can I use a store-bought drain snake?

For a bathroom sink or shower drain it can help. For toilets, kitchen lines, and main drains, a hand snake is usually not enough and can damage the trap or fixture.

Do I need a camera inspection?

If a main line keeps clogging or you suspect roots or a collapsed pipe, a camera confirms the cause before spending money on repeated snaking.

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