Framing For A Sheet Metal Roof

When a metal roofing sheet must be installed on a curved roof screws should be installed at every overlapping rib at the sheet ends to resist the natural tendency of the metal to spring back.

Framing for a sheet metal roof.

Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Open framing substrates the open frame substrate uses wood or metal framing members such as bar joists or min. The two main types of substrates used with metal roofing systems are open framing and solid substrates composite or plywood. 16 gauge purlins to secure the metal roof panels.

While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below. Place the first screw. When installing the metal panels shown in this booklet over a curved arch the. The standard fastening pattern is permitted over the rest of the sheet.

The sheet steel is then passed through rollers to give it shape and stiffness. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof. It then goes through a painting coating process to give it colour and protection from the elements. When installing a metal roof over an existing roof before installing the.

Use a tool belt that has a hammer loop to hold nails a measuring tape chalk line and a hammer when installing the wood. The sheet steel to form the panels is delivered to the roofing factory in a pre galvanised coil.