Do You Have an Exposed-Fastened Metal Roof?
If you see rows of screws running the length of your metal roof’s surface, then you have an exposed-fastened roof. Other common names for this type of roofing are screw-fastened and through-fastened. Exposed-fastened roofs comes in several styles: trapezoidal rib (including R-panels, Ag panels and PBR panels) or corrugated panels. Our attachment solutions fit the range of styles and rib dimensions.
Exposed-fastened roofing is typically a lower-cost solution and easier installation than standing seam roofing. Combined with metal’s longevity and ability to withstand extreme temperatures, this type of roofing is a popular choice for agricultural, post-frame and residential buildings. It is also used for commercial and industrial applications.
How Is an Exposed-Fastened Roof Constructed?
Exposed-fastened roofing can be installed over open structural framing or a deck. The first metal roof panel is secured directly into the framing or deck (substrate) using a row of screws that are appropriately spaced. The next panel’s rib-edge fits over the first panel’s rib-edge creating an overlap (called a “nested sidelap”). All subsequent panels are attached into the substrate the same way as the first.
The Right Attachment Solutions
Attachment in the high (into the rib)
Attachment in the low (valley)
Exposed-fastened roofs utilize brackets for mounting roof accessories. For a trapezoidal panel, the brackets are attached either to the ribs of the panel or in the valley (the flat section of the panel), depending on your specific application.
Attachment in the high (in the crest of the corrugation)
Attachment in the low (in the valley of the corrugation)
For a corrugated panel, the brackets are attached either to the crest of the corrugation or in the valley, depending on your specific application.
Quality Weatherproofing to Protect Your Exposed-Fastened Roof
Because the screws are exposed to the elements, you need mounting attachments designed to protect your roof from corrosion and water intrusion. Our brackets use the highest quality weatherproofing materials available to securely mount a wide range of accessories to your exposed-fastened roof.
(Shown: RibBracket™ III paired with the PVKIT® for rail-less solar mounting)
When properly installed, our brackets will last for the life of your roof. Let us guide you to the right bracket for your application and your roof.
(Shown: CorruBracket™ 100T PV)