Snow Guard Solutions for Graber Post Buildings Exposed-Fastener Roof Panels
Posted by Derek Gamble - SnoBlox-Snojax Specialist on Feb 2nd 2026
See the Snow Guards Compatibility Chart for Graber Post Building Exposed-Fastener Metal Roofing Panels.
Which Snow Guards Work Best with Graber Post Building's Exposed-Fastener Panels?
Metal roofs with exposed fasteners are particularly prone to sudden slides of snow and ice once winter sets in.
When snow accumulates and then releases in a single large sheet, it can trigger dangerous rooftop avalanches. Because exposed-fastener panels have smooth surfaces, snow tends to slide off in large sections rather than melting gradually. This movement puts anything below the roof edge, people, pets, vehicles, landscaping, or equipment, at risk. To reduce these hazards, we offer snow retention solutions designed to match specific panel profiles and local climate conditions. Installers can choose from individual pad-style guards or continuous rail systems, giving them flexibility to adapt to different roof designs. Our blogs, installation guides, compatibility charts, and manufacturer-focused resources make it easier for contractors and property owners to select the right system. Whether your region experiences light snowfall or harsh winter weather, snow retention is essential for controlling how snow releases from a metal roof.
About Graber Post Buildings and Its Exposed-Fastener Panels
Graber Post Buildings has evolved from a small family operation into a major supplier in the post-frame construction and building materials market. The company began in 1973 when founder Glen S. Graber and a small Amish crew built structures to support their families. Glen's dedication, working job sites during the day and selling buildings in the evenings, helped the business grow quickly. In 1976, the company built its first dedicated facility, a 60' × 244' structure on land purchased from Glen's father, marking the start of its physical expansion. Since then, Graber Post has completed nearly 10,000 post-frame buildings, expanded into retail and wholesale materials, and earned recognition, including Indiana's Entrepreneur of the Year Award in 1993. After a major fire, the company rebuilt with modern Truss and Trim Manufacturing facilities, eventually surpassing 300,000 square feet of production space. By 2007, a new office, showroom, and hardware store doubled retail capacity and broadened product offerings. Today, Graber Post continues to grow while maintaining its commitment to quality materials at competitive prices.
G-Rib (Ag Panel)
The G-Rib, commonly known as the Ag Panel, is Graber Post Buildings’ most popular profile for agricultural, residential, and light commercial applications. Each panel spans 36 inches and features a 3/4-inch rib height with ribs spaced 9 inches apart, creating a durable, efficient panel that sheds water effectively. It is available in 29-gauge and 26-gauge steel and offered in a wide range of smooth and textured colors. Panels are cut to the half-inch for precise installation and include an anti-siphon leg for added weather protection. Optional Dripstop® can be applied to help control condensation. Painted panels use the CERAM-A-STAR 1050 coating on AZ-50 substrate, while unpainted Galvalume uses AZ-55. See the Snow Guards Compatibility Chart for Graber Post Buildings G-Rib Exposed-Fastener Metal Roofing Panels.
This panel profile works with many of our snow retention products. Polycarbonate guards such as the SnoBlox Deuce and SnowBreaker fit neatly between the minor ribs. Metal options, such as the SnoCleat PBR and decorative SnowCatchers, can be installed in the flat center section to combine performance with visual appeal. Installers must mechanically fasten the Snojax I, while they may attach the IceJax I with screws or adhesive. For larger roof areas or regions with ground snow loads above 45 psf, installers typically choose rail systems for the best performance. When paired with Tall ColorBrackets and the proper fasteners, the ColorBar PBR and SnoBar PBR systems deliver reliable snow control across a variety of climates.
R-Rib (Commercial Panel)
The R-Rib, or Commercial Panel, is designed for applications requiring enhanced structural strength, making it a strong fit for agricultural, commercial, and industrial buildings. It provides 36 inches of coverage with a 1-1/4-inch rib height and 12-inch rib spacing, offering increased rigidity and load capacity. Manufactured exclusively in 26-gauge steel, it comes in a full selection of flat colors, with perforated Bright White available for interior or ventilation-specific uses. Panels are cut to the half-inch and built on an AZ-50 substrate for painted finishes or an AZ-55 substrate for Galvalume, all protected by the CERAM-A-STAR 1050 coating and an anti-siphon leg for improved weather resistance. See the Snow Guards Compatibility Chart for Graber Post Buildings R-Rib Exposed-Fastener Metal Roofing Panels.
The R-Rib panel is compatible with a broad range of our snow guard systems. Installers can use screw-down SnoBar and ColorBar rails, the SnoCleat PBR, and stainless steel SnowCatchers in designs such as Standard Rectangle, Fleur-de-lis, Sun Burst, Maple Leaf, Mustang, and Kodiak. Installers can mount most polycarbonate guards with adhesive or screws, but they must mechanically fasten the Snojax I. They should use Surebond SB‑190 only with polycarbonate guards. Installers should center smaller guards between the minor ribs. At the same time, they should position larger models like the Snojax II and IceJax II off‑center to straddle either the left or right minor rib. Consistency matters; each guard should align over the same rib throughout the installation. Installers should never attach guards or rails to the high ribs, as they do not provide adequate support. Instead, fasteners must penetrate the low flats and anchor into solid structural material beneath the panel to ensure long-term strength.
M-Rib
The M-Rib panel offers the sleek appearance of a standing seam profile while maintaining the simplicity of an exposed-fastener installation. It provides 36 inches of coverage with a 3/4-inch rib height and 12-inch rib spacing, creating a clean, modern look suitable for both roofing and siding. Available in 29-gauge and 26-gauge steel, the panel comes in a wide variety of flat and textured colors. Installers cut the panels to the nearest half‑inch for accuracy. They are coated with CERAM-A-STAR 1050 on an AZ-50 substrate, with AZ-55 available for unpainted Galvalume. The Manufacturer added an anti‑siphon leg to help maintain a weather‑tight seal. See the Snow Guards Compatibility Chart for Graber Post Buildings M-Rib Exposed-Fastener Metal Roofing Panels.
The M-Rib panel is compatible with many of our snow retention products. Stainless steel SnowCatchers are available in several decorative shapes, including Standard, Sun Burst, Maple Leaf, Fleur-de-lis, Kodiak, and Mustang. Installers can pair this panel with several polycarbonate guards, including the SnoBlox Deuce, IceJax II, and SnoBlox Ace, all of which accept screw or adhesive installation. They must mechanically fasten the Snojax I. For those who prefer controlled snow breakup rather than full retention, the SnowBreaker and SnowBreaker 3M systems help disperse snow and ice into smaller, safer pieces. In areas with snow loads above 45 psf or for homeowners seeking a more streamlined appearance, the SnoBar and ColorBar rail systems offer a strong alternative. These systems use Tall ColorBrackets and butyl tape gaskets to provide a secure, visually appealing way to manage snow and ice on the roof.
Graber Post Buildings Compatibility Chart for Snow Guards
| G-Rib Panel | R-Rib Panel | M-Rib Panel | |
|---|---|---|---|
 Ecojax |
YES | YES | YES |
 IceJax I |
YES | YES | YES |
 IceJax II |
NO | YES | YES |
 SnoBlox Deuce |
YES | YES | YES |
 Ace |
NO | YES | YES |
 Snojax I |
NO | YES | YES |
 Snojax II |
NO | YES | YES |
 SnowBreaker |
YES | YES | YES |
 SnowCatcher |
YES | YES | YES |
 SnoBar PBR |
YES | YES | YES |
 ColorBar PBR |
YES | YES | YES |
 SnoCleat PBR |
YES | YES | YES |
 SnoCleat 2.67 |
NO | NO | YES |
 SnoBar 2.67 |
NO | NO | NO |
 ColorBar 2.67 |
NO | NO | NO |
Considerations for Adding Snow Guards to Exposed Fastener Roofs by Graber Post Buildings
How Can I Coordinate My Snow Guards with My Roof?
Choosing finishes that complement or closely match your roof’s color and surface texture helps the guards blend in seamlessly. Durable powder-coated options offer long-term color stability, while DIY coatings provide an easy, budget-friendly way to customize the appearance.
When Is the Best Time to Install Adhesive-Mounted Snow Guards?
Adhesive-applied guards bond most effectively during warm weather, typically from late spring into early summer when temperatures stay above 50°F. Heat accelerates the curing process, and adhesives such as SureBond SB-190 usually reach moisture resistance within roughly 24 hours.
What Snow Guard Solutions Work Best for Unique Roof Shapes?
Roofs with arches, curves, or other unconventional contours often need guards tailored to match those shapes. Standard models may not sit properly, making custom-fit options and manufacturer-recommended placement guidelines crucial for dependable performance.
Should I Use Sealant Under My Screw-Mounted Snow Guards?
Applying sealant beneath screw-mounted guards helps seal small gaps, limit water intrusion, and prevent moisture from working its way under the fasteners. This added layer of protection enhances overall reliability and contributes to long-term system performance.
How Can I Fasten Snow Guards for Maximum Strength?
For the strongest installation, fasten snow guards directly into structural framing, such as purlins or rafters, rather than relying solely on the roof panels. Anchoring into these components increases load capacity and improves long-term holding power.
Should I Test Fit Snow Guards Before Final Installation?
Setting the guards in place temporarily before securing them allows you to confirm spacing, alignment, and layout. This simple step helps ensure a consistent pattern and a polished, professional-looking final installation.
Conclusion
At SnoBlox-Snojax, we design our snow retention products to deliver long-lasting performance, focusing on solutions that withstand years of demanding winter conditions rather than short-term options that fail prematurely. Our company's strong reputation comes from clear communication and personalized support, helping us build lasting relationships with customers across the country and internationally. From the first planning conversation through the final installation steps, we offer practical guidance, easy-to-follow instructions, and timely assistance. Tools such as our Snow Guard Buyer's Guide and detailed installation manuals give building owners the information they need to select the right system for their roof style and local snow loads. Whether someone contacts us by phone or email, they receive tailored recommendations, help choosing the proper products, and quick answers to installation or ordering questions. By streamlining the process and providing reliable expertise, we ensure every customer receives a snow retention system that performs exactly as intended.
Do you have a metal roof from a different manufacturer?
Visit our "Snow Guard Compatibility by Roof Manufacturer" resource page for detailed information on which snow guards and snow retention systems are compatible with your metal roof.
Disclaimer
The views, recommendations, and information presented in this blog are solely those of the author and do not necessarily reflect the opinions or positions of the featured panel manufacturer, its brands, subsidiaries, or parent companies. Customers are strongly encouraged to reach out directly to the roof panel manufacturer for inquiries regarding snow guard compatibility with their products, as well as to address any potential warranty issues that may arise following the installation of our products.