This guide applies to drain pipes (wastewater leaving sinks, tubs, toilets). If your supply pipes (pipes bringing clean water into the house) are frozen, that is a more urgent emergency. This guide does not cover gas lines or supply lines. The Complete Guide: Frozen Drain Pipes β What to Do Step 1: Confirm Itβs a Frozen Drain (Not a Clog) A frozen drain behaves differently than a standard clog.
β melt from the drain opening toward the main stack. This prevents water from being trapped behind the ice plug. Step 5: Use Salt or Rubbing Alcohol (For Severe Freezes) If heat alone isnβt working, try this chemical helper: frozen drain pipes what to do