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Old 05-25-2011, 09:31 AM   #1
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Sweating


Am I asking for trouble if I sweat copper that will be under a slab? I have busted my floors up and I have to relocate some of the water lines to accommodate new design. The current pipes are over sixty years old and look pretty good. I think I once read that pipes under a slab have to be brazed. It looks like the original were sweat but I don't know how to tell.

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Old 05-25-2011, 09:48 AM   #2
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we always had to silver solder any copper joints under a slab. i have repaired leaks under slabs with just regular solder tho. i really didnt have a choice. if you do id wrap some pipe insulation around the joints before covering them up.

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Old 05-25-2011, 11:41 AM   #3
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Danny, what is the purpose of the insulation around the joint?
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Old 05-26-2011, 07:38 AM   #4
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if you silver solder then it doesnt matter. i ususllay covered them to keep the soil off the joints if i had to use regular solder
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