Lap Seam Sheet Metal

Edge joints tend to be a weaker type of welding joint so they are more commonly used in sheet metal.

Lap seam sheet metal. There are three types of lap seams. Metal roofs though less appealing than shingle or tile is a more fire resistant and heat reflecting roofing option. Peel back the release backing to start the application. Lay 3 inch wide butyl tape over all vertical metal panel seams.

Aep span offers a portfolio of quality metal roof and walls which have been tested by an accredited third. If your panels aren t layered properly water damage can occur. When developing sheet metal patterns ensure you add sufficient material to the base dimensions to make the seams. The easy installation involves placing metal panels on your roof but you ll need to be mindful of metal roof overlap.

Capped on seam also known as the circular lap seam the capped on seam is created by laying a flat round piece of metal over a smaller rounded piece such as the base of a cylinder. Several types of seams used to join sheet metal sections are discussed in this section. This seam should only be used on copper sheets with weights up to 20 ounces. Position the tape with the release backing on the top side.

Where as the slip expansion lock is formed by braking a sheet of copper the lock on this seam is formed by soldering a small strip of copper below the sheet. Architectural metal roofing panels metal wall panels and related products such as soffit panels highest quality fascia and coping systems. High performance buildings require high performance metal roof and wall products. If an edge joint is required for bigger or more weight bearing construction it can be strengthened using filler metal.

The plain lap seam the offset lap seam and the corner lap seam fig.