Drain Cleaning: Causes, Fixes, and When to Call

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