Snow Guards for Standing Seam Metal Roofs by MWI Metal Roofing Ltd

What types of snow guards are best suited for MWI Metal Roofing Ltd.'s standing seam steel roofs?

In winter, standing seam metal roofs can unexpectedly release accumulated snow and ice, posing risks to people, pets, and property below.

Managing the dangers associated with roof avalanches requires the use of the right equipment and seeking expert advice. For individuals considering snow guards and retention products designed for concealed fastener roof panels, we provide customized guidance to meet different requirements. Regular blog posts help readers select products that are compatible with various roofing systems. This information highlights leading metal panel manufacturers and suggests effective snow retention options for each. This thorough approach provides readers with the understanding they need to make informed choices, enhancing safety and helping to prevent snow and ice buildup.

Standing Seam Metal Roof Panels by MWI Metal Roofing Ltd

MWI Metal Roofing has become a recognized name in Ontario for its expertise in standing seam metal roofs, as well as for producing metal slate, board-and-batten siding, and metal soffit. The business began in 1999 when founder Mike West was running a small renovation company in Orillia, handling roofing, siding, and exterior projects throughout Muskoka. Thanks to his precision and reliable craftsmanship, especially appreciated by luxury cottage owners, the company built a strong following and reputation for excellence. By 2015, demand for permanent metal roofing had surged, prompting Mike to invest in the company's first standing seam roll former. This innovation allowed MWI to custom-produce panels directly on-site, improving fit, reducing delays, and even supplying other contractors. That single machine grew into a fleet of ten by 2021, making MWI the largest on-site "chop and drop" standing seam operation in Ontario. Today, they continue to refine their process, upholding high standards, dependable timelines, and professional results—qualities that have secured their place as a leader in the province's metal roofing industry.

1.5-Inch Mechanical Panels

The 1.5-inch Mechanical Lock panel from MWI Metal Roofing & Siding provides strength, weather protection, and long-lasting performance, even in Ontario's most challenging climates. By combining precise on-site roll forming with premium materials, this profile provides a dependable solution for both residential and commercial projects. It is available in G90 galvanized steel, Galvalume, aluminum, copper, and zinc, with finish options that include SMP and PVDF in matte or low-gloss finishes. The PVDF finish offers superior protection against fading, chalking, and surface damage. Panels come in widths of 12 to 24 inches, with a seam height of 1 15/32 inches, and are cut on-site to match each project's exact specifications—reducing errors, shipping damages, and delivery costs. Two gauges are available: 24-gauge steel for added durability and walkability, and 26-gauge steel for lighter applications. Installed directly to the roof deck, the system is suitable for slopes as shallow as 0.5:12 while maintaining water-tightness. A concealed fastener design eliminates visible screws, improving appearance and preventing common leak issues. The mechanical lock seam is secured with specialized tools, forming a permanent seal ideal for windy areas, heavy snowfall, and low-slope roofs. PVDF-coated panels also meet strict ASTM standards for coating thickness, gloss retention, corrosion resistance, flexibility, and overall durability. As a result, these panels not only enhance curb appeal at installation but also maintain their color, strength, and finish for decades with minimal upkeep, resisting graffiti and withstanding extreme environmental conditions.

This roofing panel is compatible with a range of snow retention systems, especially those using adhesive-mounted polycarbonate snow guards. To ensure they stay in place and prevent issues caused by moisture or refreezing, it's essential to apply the adhesive correctly. Because the panel's surface is stamped and not completely smooth, installing the guards typically requires a thicker layer of glue for a strong hold. There are several compatible models for this panel, including the larger IceJax II, Snojax II, and SnoBlox Ace, as well as smaller models such as IceJax I and SnoBlox Deuce. For additional defense against sliding snow and ice, we suggest products like the SnowBreaker and SnowBreaker 3M. The ribbed profile of the panel also allows for clamp-on systems, including the SnoCleat RC, SnoCleat RCT, SnoBar, and ColorBar. These systems attach with stainless steel SnoBar clamps or aluminum RoofClamp fasteners. Still, it's best to test a clamp first to confirm it fits the specific panel style.

1.5-Inch Nailstrip Snaplock Panels

The 1.5-inch Nailstrip Snaplock panel from MWI Metal Roofing combines durability, sleek architectural style, and the benefit of hidden fastening. This profile comes in a range of metals and finishes, with each panel roll-formed on-site to the precise length required for the project. Options include G90 galvanized steel, Galvalume, aluminum, copper, and zinc, with finishes available in SMP or PVDF in matte or low-gloss finishes. The PVDF finish offers enhanced resistance to fading, chalking, and surface wear. Panels are available in widths from 12 to 24 inches, with a seam height of 1-15/32 inches. They can cut these panels on location for accuracy and efficiency. MWI offers two gauges: 24-gauge steel for maximum strength and walkability, and 26-gauge for lighter applications. Installation is completed over a solid deck using a concealed clip system, resulting in a smooth, modern look and eliminating the need for exposed fasteners. With a minimum slope requirement of 2/12, the snaplock design allows panels to connect securely without the need for mechanical seaming. Like other MWI offerings, these panels meet rigorous ASTM standards for coating thickness, gloss retention, corrosion resistance, and flexibility. As a result, they offer strong weather performance while maintaining their clean appearance for years with minimal maintenance.

This type of roofing panel works well with a variety of snow retention products, particularly adhesive-applied polycarbonate snow guards. Secure installation depends heavily on the proper use of adhesive, as this prevents the guards from loosening due to moisture or refreezing. Since the panel has a stamped texture instead of a flat surface, achieving a reliable bond often requires applying a thicker adhesive layer. A wide range of snow guard styles is available, from larger models like the Snojax II, IceJax II, and SnoBlox Ace to smaller designs, such as the IceJax I and SnoBlox Deuce. For enhanced protection against the movement of snow and ice, we recommend the SnowBreaker and SnowBreaker 3M. Additionally, the rib spacing of the panel supports clamp-on snow retention options, including SnoCleat RC, SnoCleat RCT, SnoBar, and ColorBar. These attach using either stainless steel clamps or aluminum RoofClamp fasteners; however, it is advisable to test a clamp on the actual panel to verify a proper fit before final selection.

MWI Metal Roofing Ltd Compatibility Chart for Snow Guards

Considerations for Adding Snow Guards to Standing Seam Roofs by MWI Metal Roofing Ltd

Use installation methods that preserve your roof warranty.

On standing seam metal roofing, opt for snow guards that fasten with clamps or adhesive rather than screws or nails. This approach reduces the risk of water infiltration while also keeping your roofing warranty intact.

Select snow retention systems specifically designed for your roof's unique needs.

Select products specifically designed for your roof's unique material and structure. Rely on compatibility tools or digital product guides to confirm a proper fit and dependable functionality.

Adapt snow guards to suit distinctive architectural elements.

Modify the snow retention setup to accommodate unusual roof details or features, ensuring maximum efficiency and protection during winter conditions.

Incorporate ice management components when necessary.

When ice movement or damming is an issue, add accessories—such as our aluminum IceStoppers on rail-style systems—that help prevent ice from slipping beneath rails, especially on high-seam metal roofs.

Confirm local snow load guidelines.

Check municipal building codes to identify required ground snow load values before selecting retention equipment. While pad systems usually hold up to 45 pounds per square foot, rail or bar designs are better suited for regions with heavier accumulations.

Coordinate adhesive installations with favorable weather.

When using adhesive-mounted guards—particularly polycarbonate styles—plan for late spring or summer when temperatures stay above 50°F. Water resistance develops within a few days, but full curing typically takes about 30 days. Avoid applying Surebond SB-190 on copper, as chemical reactions may occur.

Test products with samples before committing.

Request trial pieces of snow guard systems to check their fit with your roof’s profile. Sample orders typically have no minimum requirement and can help prevent costly installation errors.

Select retention solutions that align with your roof’s appearance.

Choose finishes that complement your roofing style, whether through powder coating or custom-matched colors. While custom coatings may delay delivery, finishing at the job site can reduce both expenses and waiting periods.

Design snow guard layouts for balanced weight support.

Position snow guards to evenly spread snow and ice loads across the roof. For pad guards, use staggered patterns, and for bars or rails, install them in continuous lines instead of segmented sections. Adhere closely to the manufacturer's spacing instructions.

Tailor retention systems for complex roof designs.

For roofing with unique curves or unconventional geometries, use guard systems made specifically for these forms. When uncertain, reach out to the roofing manufacturer for expert direction on best practices.

Conclusion

SnoBlox-Snojax provides comprehensive guidance throughout the snow guard installation process by offering tailored advice and helpful educational materials. Customers can access support for their specific installation needs through the company's website, by phone, or by email. Our Snow Guard Buyer's Guide helps you choose the right product. At the same time, the Best Practices section outlines common installation errors to avoid. With straightforward directions and reliable products, SnoBlox-Snojax gives customers the confidence to complete their installations successfully, demonstrating the company's commitment to quality service and effective snow retention solutions.

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.