Hazy shades of winter
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The blue tape like product you see in the picture here is designed to
heat up when the temperature drops below freezing and then turn off
when it warms.
Even though the instructions
stated to not use it on plastic pipe I decided to give it a try on our
gray water pipe to see what might happen.
I don't think it gets hot
enough to melt the pipe material, but it did seem to help decrease the
amount of time it takes to thaw back to normal.