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I've suddenly lost pressure only in 1 of 2 upstairs bathrooms. Both hot and cold are completely off.
Both the sink and shower are affected. A second upstairs bathroom and the downstairs kitchen are fine. I removed the aerator on the sink and I removed the shower head- no help.

It is freezing outside, but I don't see how both pipes only to one room would freeze. No signs of leaking (yet). I cannot see where the pipes from the shower and sink diverge- beneath floor or in wall between the floors.

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if both were off and together in an uninsulated space it is not unfeasible that they both froze solid before you noticed – ratchet freak Jan 23 '14 at 12:49
Make sure you know how to shut off water to that bathroom or the whole house. If those pipes burst, you're going to want to turn it off quick. – longneck Jan 23 '14 at 14:13
... and they will burst when they start to thaw (if they are actually frozen) – TomG Jan 24 '14 at 1:56
They don't burst when they start to thaw, they leak from the splits, ruptures and fractures caused by solid ice expansion when they froze solid. Der damage ist already long done before der water sprayen und drippen. – Fiasco Labs Jan 24 '14 at 2:18

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