
This guide provides a comprehensive, step-by-step approach to safely thawing and unfreezing your drain pipes. 1. Locating the Frozen Drain Pipe
Check out our guides on “Frozen Garage Door Tracks” and “How to Locate Your Main Water Shutoff in the Dark.”
: Avoid using plungers or augers on frozen pipes, as the pressure can lead to structural breaks. When to Call a Professional
Inspect the entire exposed length of the frozen pipe for any signs of cracking, bulging, leaking, or other visible damage. If you find any damage whatsoever, . Call a licensed plumber immediately. Thawing a damaged pipe can turn a small crack into a complete rupture, releasing potentially contaminated water into your home.
Run your hands along exposed drain pipes. A frozen section will feel ice-cold to the touch and may exhibit visible frost or condensation on the exterior.
Wrap vulnerable lines in foam pipe insulation sleeves or use electrical heat tape.
Use a small space heater in the basement or crawlspace during extreme cold.
Before you can fix the problem, you need to find it. Frozen pipes often occur in uninsulated areas or where pipes run along exterior walls. Common culprit areas include: Under kitchen sinks on exterior walls. Basements or crawl spaces. Laundry room drains. Pipes passing through unheated attics.
Once you’ve won the battle, win the war:
: Carefully pour boiling or very hot water down the drain. The heat may be enough to melt a shallow ice plug. Salt Water
: Focus on pipes in unheated areas like basements, crawl spaces, or those running along exterior walls.