DIY Frequently Asked Questions / Solder
- DIY Frequently Asked Questions / Solder')"> Used to sweat a copper fitting.
- Forms a bond between fitting and pipe.
- Use lead-free solder if used on potable water lines.
- Most common type is 95-5 tin-antimony solder. The first number is the percentage of tin in the solder. The more tin, the more workable the solder.