First clean the surface with emery cloth and or brushing with undiluted hydrochloric acid.
Flux for soldering sheet metal.
Johnson s j 33 galvanized flux is the superior choice for soldering sheet metal seams.
It is fairly simple to get the soldering on the steel done by just altering a few of the standard soldering steps for galvanized specific ones.
Soldering steel is easy using flux and a hot soldering iron.
This flux for soldering galvanized steel is an active chloride formulation with more strength than just plain muriatic acid.
Then wet area with zinc chloride flux you can make your own by dissolving some zinc metal into hydrochloric acid until it stops effervescing.
This product is designed for galvanized steel soldering but can also be used on copper.
In the soldering process heat is applied to the copper joint where the pipe and fitting meet and the gap between the joint is filled with molten metal.
Whether you are soldering on a job site or in the shop we have the best sheet metal soldering supplies and tools for you.
This guide will help you identify the types of solder available as well as the right flux for soldering your project.
Shop all solder types.
In the roofing trade the most common makeup of solder will be a mixture of tin and lead.
Solder is defined as a low melting alloy that is used to join two pieces of metal together.
This galvanizing flux comes in a 1 gallon pail.
The 3 most common solders for roofing are listed below.