During extreme cold, open the cabinet doors under your kitchen and bathroom sinks. This allows warm room air to circulate around the plumbing.
Choose the method based on where your freeze is located and what material your pipe is made of (PVC, ABS, cast iron, or galvanized steel).
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If the frozen pipe is exposed and accessible in a basement or under a cabinet, applying indirect heat to the outside of the pipe is highly effective. how to unfreeze a drain pipe 2021
Method B: The Hair Dryer or Space Heater (Best for Exposed Pipes)
Alternatively, apply certified electrical pipe heating tape directly to the pipe according to the manufacturer's instructions. Step 4: Inspect for Leaks
Actively thawing the pipes saves you from days or weeks of blocked plumbing. During extreme cold, open the cabinet doors under
Check uninsulated areas like exterior walls, crawl spaces, attics, or basements. Look for visible frost or bulging pipes. Open the Faucets:
Boil a kettle of water and stir in about one cup of kosher or table salt until dissolved.
You can safely handle many frozen drain pipe situations yourself using the methods described in this guide. However, you should call a plumber immediately if: you see any visible cracks or damage to the pipe, you cannot locate the frozen section, the frozen pipe is inside a wall or otherwise inaccessible, your thawing attempts are unsuccessful after several hours, or you are uncomfortable performing any of these procedures. This public link is valid for 7 days
Wrap foam pipe insulation around lines in unheated areas.
This method works best for blockages located close to the drain opening.