Corrugated

Corrugated is a metal panel from Fasteel Metal Roof Solutions. It is the lowest-cost metal panel in the Fasteel lineup. The lineup also includes standing seam, nail strip, snap lock, R-panel and soffit panels. Corrugated sits at the entry end of that group.

The panel is used as roof, siding, interior decorations, or soffit. One profile therefore covers four jobs on a building. As a roof covering it is an exposed-fastener option, and the same panel is specified for metal roof replacement with exposed-fastener panels.

The panel can be installed vertically or horizontally. It is also very popular as an interior panel. The rounded wave profile has a rib height of 7/8" and a panel coverage of 32-5/8".

The profile is a repeating wave. Each rise of the wave measures 7/8" from the base of the panel to the top of the rib. That is a low profile compared with the taller seam heights of the standing seam panels in the same lineup, which run from 1" to 2".

Three figures define the geometry of the panel.

• Rib height: 7/8"
• Panel coverage: 32-5/8"
• Minimum slope: 3:12

Coverage is the width of roof or wall that one panel finishes once it is laid beside the next. A panel coverage of 32-5/8" means each panel adds 32-5/8" of finished width to a run.

The minimum slope of 3:12 applies when the panel is used on a roof. Three inches of rise over twelve inches of run is the lowest pitch for the panel. The 3:12 minimum is the same as the minimum slope of the nail strip and snap lock panels. It is steeper than the 2:12 minimum of standing seam and the 1:12 minimum of R-panel.

A wall, interior or soffit use does not depend on roof pitch, so the slope figure belongs to roof work.

The panel is made in steel with three finish choices. Each finish comes in its own gauge.

• 29 and 26 Ga acrylic coated Galvalume
• 26 Ga SMP color finish
• 24 Ga Kynar 500 color finish

Acrylic coated Galvalume is the base finish. It is offered in the two lightest gauges, 29 and 26. The 29 Ga option is the thinnest gauge printed for the panel.

The SMP color finish is offered in 26 Ga only. SMP is the color choice for the mid gauge.

The Kynar 500 color finish is offered in 24 Ga only. That is the heaviest gauge in the group. A buyer who wants the Kynar 500 finish therefore also gets the 24 Ga steel.

The Galvalume finishes carry the metallic look of the coated steel. The SMP and Kynar 500 finishes are the color finishes. Red is one of the colors shown on installed panels in the product photos.

The panel is installed over open framing or solid substrate. The same profile works on a building with purlins or studs spaced apart and on a building with a continuous deck.

Open framing is a structure with gaps between supports and no deck beneath the panel. A solid substrate is a continuous surface such as sheathing. The corrugated panel is not limited to one or the other.

This differs from the snap lock panel in the same lineup, which is attached to solid substrates like plywood or metal decking. Corrugated accepts either condition.

The panel shows its fasteners. The product photo of an installed gable wall shows rows of small fasteners along the ribs of a red panel. This is the exposed-fastener method, the opposite of the hidden fasteners used on standing seam and snap lock panels.

The panel is UL 790 Class A fire rated. This is the one performance test printed for the Corrugated panel.

Certification marks on the product sheet are UL, Energy Star and Cool Roof Rating Council. The same three marks appear on the other Fasteel panel profiles.

The wind uplift and impact ratings printed for standing seam, nail strip, snap lock and R-panel are UL 580 class 90 and UL 2218 class 4. Those ratings are not printed for the Corrugated panel. Its performance line is UL 790 Class A only.

Fasteel makes six metal panel profiles. The sizes and uses differ.

• Standing seam: 1", 1 1/2" and 2" seam heights, hidden fasteners, 2:12 minimum slope
• Nail strip: 1" seam height, 16" panel width, 3:12 minimum slope
• Snap lock: 1 1/2" seam height, 17" panel width, 3:12 minimum slope
• R-panel: 36" coverage width, exposed fasteners, 1:12 minimum slope
• Corrugated: 7/8" rib height, 32-5/8" panel coverage, 3:12 minimum slope
• Soffit: 14" width, available perforated

R-panel is the closest match. It is also an exposed-fastener panel used as a roof or siding. R-panel is the choice for warehouses, steel frame buildings and carports. It has a 36" coverage width, against 32-5/8" for Corrugated.

The soffit panel accommodates rigid or batt insulation and is typically installed in the eave of a building to protect the structure from weather. It also allows vertical or horizontal installation. Corrugated is the panel that does both wall and roof duty, in addition to soffit.

• Roof. Exposed-fastener roofing at a minimum slope of 3:12, over open framing or a solid substrate.
• Siding. Wall cladding, installed vertically or horizontally.
• Interior decorations. Very popular as an interior panel.
• Soffit. Underside cladding at the overhang of a building.

The finish and gauge are chosen to suit the use. Acrylic coated Galvalume in 29 or 26 Ga suits a plain panel. SMP in 26 Ga and Kynar 500 in 24 Ga give a color finish. All three are printed for every use of the panel.

Because it is the lowest-cost metal panel, Corrugated is the panel to compare against when a project needs a lower-cost metal cover on a roof or wall of simple geometry. The UL 790 Class A fire rating applies in every one of these uses.