While there are dozens of metal roofing options, there are basically only two ways to install them.
Any metal roof will be attached using fasteners, the difference comes in whether those fasteners are exposed or concealed.
Exposed fasteners are a popular option because they give the classic and more rustic metal roof appearance and it is an easier, faster, and less expensive installation option.
Exposed Fastener Roof Panel Options
Exposed fasteners are most commonly used on corrugated metal panels. Corrugated metal roofing has been around for centuries. It is durable and withstands even the strongest storms.
Corrugated metal panels begin as a large metal sheet that is roll-formed into individual panels and can be used on nearly any type of roof.
There are five common styles of corrugated metal roofing. Each style is identified by four main criteria: rib height, center-to-center rib spacing, panel width, and the minimum slope.
1. PBD – PBD features symmetrical ribs from top to bottom and can be used for both roof and wall applications. PBD features a smaller rib system, where the ribs are very close together, similar to the 5V panels.
- Rib Height: 5/8”
- Center to Center Rib Spacing: 2.67 Inches
- Panel Width: 32”
- Minimum Slope: 3:12
2. R-Panel (PBR) – Similar to multi-rib this panel is also versatile and can be used for residential roofing and siding. “R” Panel is a wide, economical panel providing a large coverage area for both vertical or horizontal applications.
- Rib Height: 1 ¼”
- Center to Center Rib Spacing: 12 Inches
- Panel Width: 36”
- Minimum Slope: 1:12
3. 7.2 Mega-Rib Panel – The Mega-Rib is known for its strength and ability to span a large area. This is why it’s so popular for industrial and commercial buildings. It is installed horizontally rather than vertically and makes a beautiful architectural aesthetic.
- Rib Height: 1.5”
- Center to Center Rib Spacing: 7.2 Inches
- Panel Width: 36”
- Minimum Slope: 1:12
4. 5V – This is a popular residential exposed fastener metal roof option because it provides a classic farmhouse design to any home. The 5V Crimp provides double ribs on the panel edges to create the classic 5V look and conceals an anti-siphon channel.
- Rib Height: .5”
- Center to Center Rib Spacing: 12 Inches
- Panel Width: 24”
- Minimum Slope: 3:12
5. U-Panel (PBU) – The U-Panel is commonly used for a wide variety of applications including both residential and commercial. It is slightly larger than the 5V option and brings a little more visual interest.
- Rib Height: .75”
- Center to Center Rib Spacing: 6 Inches
- Panel Width: 24”
- Minimum Slope: 2:12
Advantages of Exposed Fastener Roofing
Exposed fastener metal roofing has become the most popular roofing style installed in homes today. There are several advantages that win favor with homeowners and home builders everywhere.
- Easier Installation – Exposed fasteners don’t require fancy tools or mechanical seamers for installation. These panel sheets are lighter than standing seam and easier for roofers to install and repair.
- Low Installation Cost – Exposed fastener panels are easier to install and that is what makes them less expensive than other metal roofing options.
- Easily Available – Unlike other metal roofing sheets, exposed fastener panels are available in any area of the country and easy to find when you need them.
- Required Less Accessories – Exposed fastening roofing systems use less hardware and accessories than other systems. The hardware itself is all you need, no additional clips, less trim, and flashing, just a simple one-piece system.
- Versatile Styling – There are over 8 different types of exposed fastener metal panels. Depending on how you want to style your roof, you can choose from this wide selection of panel styles.
- More Contractors Option – Exposed fasteners are one of the easiest styles of metal roofing to install so it is relatively easy to find a qualified roofing contractor to do the job.
Common Problems with Exposed Fastener Screws
Although metal roofing is more reliable and long-lasting, there are a few areas to be aware of when installing an exposed fastener roofing system. If screws are not properly installed, problems can occur.
- Over Driven – Because the fasteners are exposed to the elements, it is critical that they are installed correctly. When a fastener is over-drilled, it could cause the washer, cap, and even the screw to come out. Over time, this can compromise the roof and lead to leaks.
- Under Driven – On the other hand, under-driven fasteners can also cause problems by failing to adequately secure the roof. This can also lead to a water leakage problem.
- Poorly Angled – If the fastener is not screwed at the needed angle, it will not grip the two-panel together and might not seal the roof properly.
- Poorly Installed – Poor installation is a risk with any roof, but exposed fastener roofing requires a skilled hand. There is nothing more damaging for the roof than a poorly installed screw.
Cost of Exposed Fastener Metal Roofing
The average cost of an exposed fastener metal roof installation is anywhere from $13,000 – $17,000 or between $7.00 to $12.00 per square foot.
The cost of exposed fastener metal roofing can vary depending on the type of metal, the metal gauge, the paint used on the metal, and the complexity of the roof.
While a metal roof will always cost more than asphalt shingles, it can be an economical metal roof option.
Standing seam or metal shingles will cost you somewhere between 50% more and up to three times what a corrugated metal roofing will cost.
Let Us Help You Pick the Right Panel
Exposed fastener systems are one of the most reliable and economical metal roofing options on the market. They work best for those who are interested in a farmhouse or industrial-looking roof and want to save a little extra money on a metal roof installation.
The best type of roofing solution depends on the needs of your home or business. If you’re interested in an exposed fastener or other styles of metal roofing, give us a call today!
