Gibraltar Building Products SM-Rib 3.125-ft x 12-ft Ribbed Green Galvalume Steel Roof Panel, 29-Gauge, 36-in Coverage

Regular price $63.95

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SM-Rib 12-ft Green Galvalume Steel Roof Panel

Durable SM-Rib roof panel made from painted galvalume steel delivers long-lasting, low-maintenance protection for roofing or siding. The 12-ft panel provides 36-in coverage with 29-gauge strength, ideal for sheds, garages, and agricultural buildings. Non-combustible and impact-resistant, it stands up to harsh weather and is backed by a 40-year limited warranty.


Key Features:

  • Durable Galvalume Construction: Painted top-side galvalume steel resists corrosion and harsh weather for long service life
  • Low Maintenance & Pest Resistant: Will not rot, warp, or mildew; forms a pesticide-free barrier against termites
  • Fire & Impact Resistance: Non-combustible with hail impact resistance for added security
  • Wide 36-in Coverage: SM-Rib profile offers full 36-in coverage for roofing and siding projects
  • Easy Handling & Installation: Lightweight panel cuts with shears; use gasketed, color-matched screws to prevent leaks

Specifications Table:

Specification Details
Color/Finish Family Green
Manufacturer Color/Finish Green
Material Galvalume steel (painted top side)
Package Quantity 1
Profile SM-Rib (Ribbed)
Length (Feet) 12
Panel Size (Sq. Feet) 36
Coverage Width 36 in
Gauge 29
Weight (lbs.) 26.76
Impact Resistance Yes
Fire Resistance Non-combustible; UL Class A referenced
Recommended Roof Slope 3/12 pitch or greater
Fastening Exposed fastener; color-matched gasketed screws
Cutting Method Shears/scissor cutting tools (do not use panel saw)
Recyclability 100% recyclable after service life
Warranty 40-year limited

Frequently Asked Questions (FAQ):

Q: What is the panel’s coverage and length?
A: Each panel is 12 feet long and provides 36 inches of coverage when installed.


Q: What roof slope is recommended?
A: Suitable for roof slopes of 3/12 pitch or greater.


Q: How is the panel fastened?
A: SM-Rib is an exposed fastener system; install with color-matched gasketed screws and follow the fastening schedule.


Q: Is the panel fire resistant?
A: Yes, it is non-combustible and has UL Class A fire resistance testing noted by the manufacturer.


Q: Is it environmentally friendly?
A: Yes, after its long service life, the steel panel is 100% recyclable.


Crisp Ribbed Lines, Confident Shelter

The SM-Rib panel introduces tailored linear rhythm that sharpens rooflines and elevates utilitarian structures with a refined, modern edge. Its rich green finish anchors outdoor architecture, pairing beautifully with warm wood siding or sleek concrete. Use it to clad garages or garden sheds for a cohesive, graphic statement that feels both rugged and chic. A resilient essential, it marries lasting performance with a polished, luxurious look.


Upgrade your project with durable, fire-resistant SM-Rib panels—add to cart now for long-lasting, low-maintenance protection.

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