TL;DR
Sweating a joint is the act of soldering one copper pipe connection: cleaning and fluxing the tube and fitting, heating the fitting with a torch, and touching lead-free solder to the rim so capillary action pulls it through the entire lap. A properly made connection shows a continuous silver fillet all the way around with no gaps or beads.
What it means
Sweating a joint is the act of soldering one copper pipe connection: cleaning and fluxing the tube and fitting, heating the fitting with a torch, and touching lead-free solder to the rim so capillary action pulls it through the entire lap. A properly made connection shows a continuous silver fillet all the way around with no gaps or beads. Federal drinking-water law has required lead-free alloys on potable lines since 1986, and any leftover water in the line will boil and block solder flow, which is why pros stuff bread or use bleed valves on live repairs.
Where it sits in the glossary
Sweating a joint is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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