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Old 01-11-2016, 10:58 PM   #1
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Heating underground 1/2" water line


I have 1/2" copper pipe running cold water from my basement outside to my garage. The length is ~15 feet to the value in the garage. The original home owner did not run the line deep enough to prevent it from freezing nor did they otherwise wrap it. It's under concrete which I'm not looking to break up.

I have seen some solutions online for these in-line heating cables that come with a thermostat unit, but I feel they are more for industrial application. They require 1 - 1.25" pipe and run from $500 - $1500... way out of my range.

Can anyone suggest what I might be able to do to prevent the line from freezing? Currently, it's setup so that I can turn the water off in the basement and open another value to drain the water back out. However, I use the water supply other so constantly shutting the supply off and draining is becoming a hassle.
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Old 01-12-2016, 12:03 AM   #2
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How difficult would it be to run a new line in a different location? Then you could run it at the proper depth. Is the garage heated? If not then the pipe could still freeze where it comes up into the garage.
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Old 01-12-2016, 02:05 AM   #3
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Either way I go I need to go through concrete to get to the garage. The garage is attached to a breezeway which is attached to the house.

The issue is actually the pipe freezing inside the garage rather than under the concrete itself. However, my thought was if I can use an in-line heat cable, it would feed under the concrete and up into the garage where the pipe is exposed to the cold temperature. Even though it's exposed, the inside temperature of the pipe shouldn't freeze with a heat cable.
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Old 01-12-2016, 04:32 AM   #4
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Consider attempting to locate an electric or plumbing supply that will sell self regulating heat cable by the foot and heat that only in the garage. Then there is the older method of leaving a stream run about the size of a tooth pick tip end to prevent freezing.


Last edited by SeniorSitizen; 01-12-2016 at 04:46 AM.
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Old 01-12-2016, 07:06 AM   #5
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Quote:
The issue is actually the pipe freezing inside the garage rather than under the concrete itself.
Ayuh,.... Yer highly unlikely to be able to have a wet tap in an unheated buildin', that don't freeze, 'n bust, Regularly,....
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