03:56PM | 02/07/03
Member Since: 02/06/03
1 lifetime posts
In December, I had a pipe burst in my garage that led to the front hose bib. In October I had shut off and drained the hose bib, so when it burst this was a surprise. I had it fixed and the problem may have been linked to a faulty internal shut off valve. A trickle of water had bypassed the valve filling the pipe until it burst. Instead of leaving the outside nob open after draining, I had apparently closed it again which made it so the water couldn't get out. Oops. The plumber installed another shut off valve (lever type) above the existing internal shut off nob. I have had the water shut off and the outside bib kept open since the repair. One thing to note was that the prior owners of my home may have had a burst previously at the same point. There was already a patch in the ceiling that started to come down when my burst happened. The plumber said it looked like the pipe had been repaired before. The pipe was exposed with nothing between it and the OSB board to the external wall. The break was at a point on a horizontal section just before it makes a vertical drop down to the hose bib. After the repair, I put insulation between the pipe & the OSB. I had planned to also wrap the pipe with one of those foam wraps before I patched the ceiling up, but before that could happen ...

Here comes the question. I'm purplexed. Every day either coming or going to work, I would look up into the hole and check the pipe. Everything always looked ok & the drywall was drying out nicely. Tonight I saw a shadowy line on the pipe which looked odd. I new that wasn't there before. I thought the thing couldn't have burst again, could it? The water has remained shut off & the front hose bib has remained open. I got a flash light and a ladder to get a closer look. Sure enough, the replaced section of pipe has burst. Is this possible? Can air become trapped and expand the same way as water does in a copper pipe? I've never heard of such a thing. The burst is absolutely dry. No moisture in, on, or around the surrounding area.

Please please please somebody tell me if this is actually possible or am I just insane or cursed?

I will call my plumber on Monday. Is this something that should be covered under some sort of repair guarantee/warranty? Could the pipe have been weakend by overheating during repair. It is in an awfully tight spot so it did take him some time to make the repair. It cost a small fortune to fix it the first time.


04:46AM | 02/09/03
Member Since: 10/08/02
30 lifetime posts
No, air can not be frozen.

Possible cause. After the plumber replaced the pipe and added the shutoff valve he would have check the job for leaks by opening the valve. Now, if the section of pipe he replaced does not have a downward angle some water will remain in the pipe after the valve is shut again. This water could have frozen during the night, burst the pipe, then melted the next day and slowly dripped out leaving the pipe dry.

Check for a downward angle on that section of pipe..



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