Sheet Metal Brazing

Metal roofing uses durable materials like steel, aluminium, and copper to create long-lasting, weather-resistant covers for buildings, often lasting over 50 years.

What is sheet metal brazing?

Metal roofing involves the use of metal sheets or tiles to cover the roof of a building. Common metals used include steel, aluminium, copper, and zinc. These materials are chosen for their durability, resistance to weather, and ability to be recycled. Metal roofing is known for its long lifespan, often lasting 50 years or more, and its ability to withstand extreme weather conditions, including heavy snow, hail, and high winds.

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History of sheet metal brazing

The use of metal for roofing and drainage has a long history. Metal roofing has evolved significantly over the centuries, starting from ancient civilizations that used metals like copper and lead for their durability and resistance to weather. The Romans were pioneers in using metal for roofing and drainage systems, developing sophisticated techniques to create durable and efficient structures. Over time, the use of metals like zinc, aluminum, and steel became more common, especially during the Industrial Revolution, which saw significant advancements in metalworking and construction technologies.

How does it work?

The process of installing metal roofing involves several steps, including measuring and cutting the metal sheets, securing them to the roof structure, and sealing the joints to prevent leaks. One of the key techniques used in metal roofing is soldering, which involves joining metal components using a soldering iron with a copper bit and filler metal called solder. Soldering is particularly useful for creating watertight seals around joints, seams, and flashing.

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Frequently asked questions

A soldering iron is the proper torch to use. It’s a torch operated with propane. The soldering iron has a copper bit attached to it that heats up through the use of a flame and can then be used to solder sheet metal.

The copper bits that are used should have a weight between 250– 500 grams. A general rule of thumb is that the heavier the weight, the better heat retention it has.

This depends on your personal preference. There is a distinction between pointed and hammer shaped copper bits. Pointed copper bits can be used on areas that are narrow and hard to reach while hammer shaped copper bits are wider and can transfer heat better.

You also need to have an ammoniac stone. Copper bits need to be pre-tinned before being used for the first time. They are usually covered with a layer of copper oxide, the ammonia stone cases good adhesion to the copper bit and the copper oxide is dissolved resulting in a clean surface. This is usually done by rubbing the hot copper bit back and forth on the ammonia stone.

Yes, you will need flux. The flux deoxidides the surface during soldering which prevents access of oxygen.