R-Panel Metal Roofing
A heavy-duty commercial exposed-fastener panel with 1.25" high ribs — built for commercial, industrial, and agricultural roofs and walls, with low-slope capability down to 1:12.
Heavy-Duty Strength for Demanding Buildings
R-Panel (also known as PBR-Panel) is a heavy-duty through-fastened (exposed-fastener) steel roofing and wall panel. With 1.25" high ribs spaced 12" on center, it's built for commercial, industrial, and agricultural applications where strength and low-slope capability matter.
The PBR variant includes a purlin bearing rib that makes stitch-screw installation easier on open-frame roofs. R-Panel installs quickly and cost-efficiently on slopes as low as 1:12, making it a popular choice for commercial and agricultural use.
Built with high-tensile steel and 1.25-inch trapezoidal ribs, R-Panel handles open-frame spans up to 5–7 feet apart without a solid deck. The PBR variant includes a purlin bearing rib that makes stitch-screw installation easier on open-frame roofs. Available in SMP painted, PVDF painted, and unpainted Galvalume finishes.
R-Panel Detail
Four 1.25-inch trapezoidal ribs spaced 12 inches on center, with a 36-inch coverage width. Built with high-tensile steel for commercial, industrial, and agricultural roofs and walls — handles slopes as low as 1:12 and open-frame spans up to 5–7 feet.
Built Tough, Installed Smart
Heavy-Duty Strength
1.25" high trapezoidal ribs and high-tensile steel handle demanding commercial, industrial, and agricultural applications.
Low-Slope Capability
Can be installed on roofs as low as 1:12, making it ideal for low-slope commercial and agricultural roofs.
Open-Frame Spanning
Strong enough to span open framing up to 5'–7' apart without a solid deck — a cost advantage for many buildings.
Versatile
Works as roofing and as wall and siding panels for commercial, industrial, and agricultural buildings.
R-Panel Specs
Gauge, length, colors, finishes, and project suitability are confirmed during estimating. 22 gauge is available as an optional upgrade for the heaviest-duty applications.
Warranty
- Painted panels: Available in SMP painted, PVDF painted, and unpainted Galvalume finishes. Painted systems carry a 50-year paint warranty, 50-year substrate warranty, and 30-year fade/chalk warranty.
- Unpainted Galvalume: 45-year warranty. Popular for commercial roofs; painted options are popular for roofs and walls.
Final written manufacturer documents and project-specific eligibility control. Tennessee Metal Roofing does not independently guarantee these manufacturer warranty terms.
Available Colors & Finishes
R-Panel is available in a broad range of standard painted colors and premium colors. Color availability is confirmed during estimating — request physical samples for your final selection.
Standard Colors
Premium Colors
Unpainted zinc-aluminum alloy — 45-year warranty, popular for commercial roofs.
Colors shown are best-match approximations from the Summertown Metals 2026 color chart. Exact matches cannot be guaranteed due to screen variations. Always confirm from physical samples.
Common Applications
R-Panel is most chosen for commercial and industrial roofs and walls, though it blends in well in most architectural and agricultural designs.
Choosing the Right Exposed-Fastener Panel
Both are through-fastened steel panels. R-Panel is built heavier for commercial and low-slope use; Tuff-Rib is lighter and more cost-conscious for residential and agricultural buildings.
We'll help you choose the right panel during your free estimate — no pressure.
What Determines Long-Term Performance
The panel is only part of the system. These details determine how an R-Panel roof performs over time — especially on low-slope applications.
Underlayment
Proper underlayment protects the deck and manages moisture beneath the panels.
Screw Placement & Washer Compression
Fasteners must be placed correctly and driven to the right compression — too tight or too loose can cause leaks.
Flashing
Correct flashing at valleys, penetrations, and transitions keeps water out — especially important on low-slope roofs.
Ventilation
Adequate ventilation manages heat and moisture in the building space.
Closures & Trim
Proper closures and trim seal the panel system at edges and prevent wind-driven water entry.
Periodic Fastener Inspection
Exposed fasteners should be inspected periodically — washers can age and screws may need attention over time.
Is R-Panel Right for My Roof?
R-Panel is a great fit for many commercial and agricultural projects. Here's a quick guide to help you think through whether it's the right system for yours.
R-Panel May Be a Good Fit If…
- You're roofing a commercial, industrial, or agricultural building
- You need a low-slope roof (down to 1:12)
- You need open-frame spanning (no solid deck)
- You want a heavy-duty panel for demanding applications
Consider Tuff-Rib If…
- You're roofing a home, barn, or outbuilding
- You want a lower-profile, more residential look
- Your roof slope is 2.5:12 or greater
- You want the most cost-conscious option
Consider Apex Panel If…
- You want a standing-seam look at an exposed-fastener price
- You're roofing a home where modern aesthetics matter
Not sure? We'll help you decide during your free estimate — no pressure.
A Clear, Five-Step Process
You should always know what is happening and what comes next — from the first call through the final walkthrough.
Inspect
We review your project over the phone first. On-site inspections are scheduled case by case — not every roof needs one.
Recommend
Clear options and an honest recommendation, explained so you can decide with confidence.
Confirm
Approve the written scope and select your roof color. Professional scheduling follows.
Install
Clean, documented installation with updates throughout and respect for your property.
Walk Through
Final walkthrough, warranty documentation, and a finished roof worthy of a referral.
Our Commitment to Every Project
No matter the size of the job, these are the standards we work to on every installation.
Clear Written Scope
You receive a clear, written scope of work before any installation begins — no surprises.
Communication Throughout
We communicate every step of the way, so you always know what is happening and what comes next.
Respect for Your Property
Clean, organized work areas and respect for your home, family, and schedule throughout the project.
Documented Final Walkthrough
A final walkthrough and warranty documentation so you understand your new roof and what it covers.
Verified customer testimonials will be added here as they become available.
Ready for a Roof Built to Perform for Decades?
Request your free estimate today. We'll inspect the property, explain your options, and provide a clear written scope — no pressure.
Built to Last. Installed to Perform.