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what is the best insulation for 3/4"copper pipe under 12' decking to keep from freezing?

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Posted 2013-12-31T20:40:52+0000  by Laurence1a Laurence1a
 

To some degree it's going to depend on your local climate, if you're in the northern part of the U.S.  insulation alone probably isn't going to do it.  You'll need to insulate and use heat tape.

 

 

Posted 2013-12-31T21:41:11+0000  by Adam444

Adam is correct. If the temps are below freezing for several hours, your pipes are likely to freeze and rupture. Most older spigots in northern climes had shut off valves inside the house so that the faucet would not freeze. Similarly, outside lines would have to be shut off and drained to prevent freezing.  If freezing is only a rare occurrance, the faucet could be left to trickle enough so that the water would not freeze.

 

There are also electrical heat tapes which can be strapped to the lines to provide enough heat to prevent freezing.

 

If possible, the long term solution would be to route the water line where it is not subject to extreme temps, such as through the basement or crawlspace, and the use of a "frost free" faucet. These faucets have a long tube behind the trun off. The actual valve is then deep inside the house.

 

Posted 2013-12-31T22:10:54+0000  by ordjen
 
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