Quote:
Originally Posted by Laker14
I suppose anything is possible, but the leaky seals being replaced are dripping water out of the faucet, not back into the wall. Typically it's only the seals that need to be replaced.
As far as turning the main water supply off, I do that every Spring, and turn it back on every Autumn. It might not be a bad idea to have some faucets open when you turn the water back on, so you don't get a sudden burst of pressure in the system, but I wouldn't call a plumber to turn that valve for me.
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I assume that some mixing valves have different designs. I was referring to the large o-ring that seals off the water between the mixing valve mechanism and the permanent metal chamber mounted to the studs inside the wall. If that o-ring fails, water will leak into the chamber, and possibly into the wall.