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TheTransAgendaIsLove t1_j219aax wrote

plumber here, exterior pipes can clog up easily when its cold because any trickle of water will freeze in the pipe same as how icecicles are made and itll keep growing till it plugs up the line with ice. you can get heat tape to try and deal with it but thats not guaranteed to work. the other problem is when the pipes are freezing cold and your using hot water the lines have a tendency to split right down the middle from the temperature change. if that happens you gotta replace it all.

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NationalMyth OP t1_j21gq4i wrote

Hey thanks. There was no ice forming on any part of the exterior pipe, which would have indicated a crack. The weather warmed up today and the ice blockage melted. We believe the initial overflow of water into the wall was caused by a water backup from the blockage and a poor seal on the toilet. We'll be replacing the toilet (long time coming) and obviously adding a new seal/gasket/ring. We know what to watch for next time a cold snap hits. Thanks for the reply.

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