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.

Open framing substrates the open frame substrate uses wood or metal framing members such as bar joists or min. Install the roofing screws vertically along each rib in the panel. 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. 16 gauge purlins to secure the metal roof panels.

When installing the metal panels shown in this booklet over a curved arch the. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. 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. Experienced do it yourselfers can use a nail gun with 8d nail clips instead of a hammer and nails.

The two main types of substrates used with metal roofing systems are open framing and solid substrates composite or plywood. When installing a metal roof over an existing roof before installing the. The sheet steel to form the panels is delivered to the roofing factory in a pre galvanised coil. Framing a roof is the last step in framing new construction.

The sheet steel is then passed through rollers to give it shape and stiffness. Place the first screw.