Exposed Fastener Panel Products

What are Exposed Fastener Panels?

Exposed fastener panels by McElroy Metal offer immense versatility because of the wide range of panels offered. Customers can select from 12 different panel styles. McElroy Metal’s Exposed Fastener panels are not just utilized on exterior applications.  They are also commonly used for interior applications, like liner panels and architectural elements.  

McElroy’s Exposed Fastener panels offer outstanding technical properties and can be utilized for both new construction and retrofit projects.

Exposed Fastener Panels

Advantages of Exposed Fastener Systems


3’ coverage means panels are quick to install (this doesn’t apply to 5V)


Exposed fasteners make single panel replacement easy


Cost-effective entry product with solid performance and life expectancy.


12 different profiles offer extensive aesthetic options


Steel liner panels allow bright interior spaces that can be washed down much easier than drywall.


Intermediate ribs reduce the phenomena and appearance of oil canning

Exposed Fastener Panel Systems

Exposed fastener panels are the most economical form of metal roofing and siding.  Panels are over-lapped and fastened directly to the roof deck or framing through the face of the metal panel. These panels are called exposed fastener because the fastener head remains visible once installed. To help blend with panels, fastener heads are painted the same color as the roofing panels. Most exposed fastener panels are typically 36” wide, meaning that fewer panels (and less labor) will be needed to cover the roof area.

Exposed fastener panels are identified by 5 main criteria:

  • Rib Height
  • Center to Center Rib Spacing
  • Panel Width
  • Cover Width after lapping
  • Minimum Slope
5V Exposed Fastener Panel
  • 5V Metal Roofing McElroy’s 5V panels are 24" wide and incorporate a classic design that adds beauty to any home. 5V is also commonly installed as an interior liner or accent panel.
  • Max-Rib Max-Rib is a low profile (3/4") panel that is well suited for commercial, agricultural and residential applications. McElroy offers four different substrate and coating combinations to meet varying  end uses and customer performance expectations.
  • Mini-Rib The symmetrical design of McElroy’s Mini-Rib exposed fastener panel make it an appealing profile for soffit, liner and fascia applications.
  • Multi-Rib Multi-Rib is a multi-use roof and wall rib panel primarily used in pre-engineered metal building applications. An optional Purlin Bearing Leg (PBR) rests on purlins and provides support for fastening the panel lap.
  • R-Panel R-Panel is a multi-use wall and roof panel used primarily in pre-engineered metal building applications.  An optional Purlin Bearing Leg (PBR) rests on purlins and provides support for fastening the panel lap.
  • Mega-Rib Mega-Rib is a 7.2 exposed fastener panel suitable for commercial and industrial applications that provides optimum strength and spanning capabilities. When installed horizontally, Mega-Rib's bold ribs provide an architectural statement that is hard to match
  • Mesa Mesa is a patent and copyright protected panel that features a nearly invisible lap offering a distinctive look.
  • Multi-Cor & M-Cor Consistent, rounded corrugations make Multi-Cor and M-Cor ideal panels to achieve nostalgic appeal whether installed as a wall, roof or interior accent panel in either vertical or horizontal applications.
  • Multi-V Multi-V is an exposed fastener wall panel designed so that fasteners are placed in the valleys, making them visually less apparent.
  • U-Panel U-Panel is an exposed fastener wall and roof panel. With a ¾” (approximate) rib height and 6” on center rib spacing,U-Panel is also widely utilized as a liner panel or partition wall.
  • Post Frame Trim
  • Residential Trim