Dump half a cup of kosher salt or rock salt directly down the drain.
You can’t thaw what you can’t find. Run your hand along the exposed pipe. The frozen section will feel noticeably colder. Use an infrared thermometer to pinpoint the exact spot. If the pipe is inside a wall:
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Open the faucet connected to the frozen drain. As the pipe thaws, water will flow, helping to melt the rest of the ice. 4. Preventing Future Frozen Pipes
Open the faucet or shower valve connected to the frozen drain. This relieves pressure and gives melted ice somewhere to go. Also open the cleanout plug if accessible. Do not flush the toilet if it’s frozen – the bowl could overflow. Dump half a cup of kosher salt or
Start heating the pipe . This allows the melting ice and steam to escape safely through the open end.
Wrap an electric heating pad around the pipe and set it to medium heat, monitoring it closely. Step 4: Address Exterior and Vent Pipe Freezes The frozen section will feel noticeably colder
Once your pipes are clear, take steps to ensure it does not happen again during the next cold snap.
Once you locate the blockage, use one of these DIY methods to melt the ice safely. Always start with the gentlest method first. 1. The Hot Water and Salt Method
Use a thermal imaging app on your smartphone (like Seek Thermal or FLIR One) if you have one. Failing that, run your hand along the pipe. The frozen section will feel noticeably colder and may have a slight bulge or frost line.
If you suspect a frozen drain pipe, it is crucial to take action immediately, as pipes can take days to thaw naturally.