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The Top Causes of Drain Clogs and How to Prevent Them

Drain clogs might seem like a small issue, but left untreated, they can lead to big problems—especially in older homes around Seattle. Whether it’s a bathroom sink or a kitchen drain, knowing what causes clogs and how to avoid them is key.

1. Hair and Soap Buildup

  • The number one cause of slow bathroom drains
  • Hair binds with soap and sticks to pipe walls
  • Prevention tip: Use mesh strainers and clean them weekly

2. Grease and Food Waste

  • Grease solidifies inside the pipes, trapping other debris
  • Coffee grounds, rice, pasta, and eggshells also cause buildup
  • Prevention tip: Dispose of grease in a container, not down the sink

3. Foreign Objects

  • Diapers, wipes, paper towels, and even toys can end up down toilets or drains
  • These can get lodged and create major backups
  • Prevention tip: Only flush toilet paper and human waste

4. Tree Roots

  • Root systems naturally seek moisture and often break into older pipes
  • Roots grow inside and expand, eventually blocking flow
  • Prevention tip: Annual camera inspections if you have mature trees nearby

5. Aging Infrastructure

  • Clay and cast iron pipes are more likely to collapse or corrode
  • Signs of aging include frequent clogs and slow draining
  • Prevention tip: Replace sections of deteriorating pipe before total failure

Tips to Keep Drains Flowing Year-Round

  • Avoid using chemical drain openers
  • Schedule routine hydro jetting every 1-2 years
  • Install drain screens and clean them regularly
  • Address slow drains before they become total blockages

When to Call for Help

  • Gurgling sounds from multiple fixtures
  • Water backing up into tubs or showers
  • Recurring clogs despite cleaning efforts

Being proactive saves time, money, and stress. In a city where rainfall and old homes meet, smart maintenance is your best line of defense.

Serving Snohomish, King, & Pierce Counties, up north to Everett, down south to Tacoma, as far east as Issaquah, and everywhere in between.

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