The up-roof side of the sliding clamp then bolts down onto the mounting block. In our photograph we see the mounting block, clamp, and snow guard fence in the proper orientation. Correct Mounting Block, Versa Clip & Snow Fence Mounting Position The manufacturer said to “face the clamp up-roof” but which side was the “face”? To answer the question we watched the company’s installation video where the detail was shown. The mounting block in the photo needs to rotate 180 degrees from the way it’s shown in my wrinkled hand.
Don’t do this! As shown above the snow brake support will be weaker than its design strength. A first-time installer may be doing some head scratching.Ībove we show the snow brake, its Versa-Clip mounting clamp that slides along a groove in the snow brake’s flat or bottom edge, and a mounting block in the wrong position.
Along with the Versa Clip that clamps the snow fence to the mounting block there are quite a few possible orientations for these parts. The mounting block has seven tapped openings. Then there is the question of positioning the mounting block and the actual sliding Versa Clip clamp that connects the snow fence to the mounting block.Īn important detail that was not obvious in the manufacturer’s written instructions was the position of the snow guard Versa Clip clamp and its connection to the snow fence itself. Learn more about installing snow guard systems and weather proofing at METAL ROOFING INSTALLATION INSTRUCTIONS Improper Snow Fence, Versa-Clip & Mounting Block Positioning So, What’s on Your Roof?Ī quality snow guard system will help preserve your roof and allow snow pack to exit the roof in a more controlled manner.
Snow rails for metal roofs download#
Download this comprehensive technical bulletin for invaluable information for helping you evaluate snow guard products and systems for proper performance and durability for the life of the roof. Visit MC A (then click on “Metal Roofs”) for more information. The MCA (Metal Construction Association) technical documents are an additional aid for snow guard selection criteria. We’ve put together a quick video to show viewers some examples. But as S-5! has witnessed countless times over the years, adhesive-mounted snow guard systems generally fail long before the roof does. So, obviously a snow retention device must actually remain on the roof – for the life of the roof. Keep Snow on the RoofĪ snow guard system’s number one purpose is to hold snow back and allow it to leave the roof slowly, (in small amounts or as melt water). When compared with our mechanically attached products, load test failure data has shown it can take up to 10 adhered parts to equal the strength of just one row of our ColorGard ® system. In bright sunlight, they are highly reflective, so they tend to glow like light bulbs.īeyond aesthetics, the progressively low failure load of plastic snow guards requires an over-populated (polka-dotted) design on the roof to prevent failure. Manufactured with petroleum derivatives, oils and plasticizers leach out of the material and cause the guards to yellow over time. Less Conspicuous?Ĭlear plastic snow guards are a misnomer in name too. The bond weakens over time and when it fails, the guard can rip away paint and protective roof coatings, potentially leading to corrosion. Snow Guards for Metal RoofsĪt S-5!, we don’t recommend installing adhesive-mounted snow guards on metal roofs. From both an economic and design perspective, glued on plastic snow guards typically have low holding strength and are unable to handle harsh weather-related elements.
Snow rails for metal roofs update#
With the newest update to the National Building Code of Canada 2015 that addresses snow guards “for a guard to be considered effective in retaining snow, it must be constructed of horizontal rails with a minimum diameter of 25 mm spaced no more than 100 mm apart”. Structural Commentaries (User’s Guide – NBC 2015: Part 4 of Division B), it is important to work with a company who can provide a proper snow guard solution for your specific roof! Sky Products Ltd recommends S-5! products as they have been rigorously tested in both laboratory and field conditions. Sky Products Ltd has been a proud stocking distributor of S-5! since 2010 and since then has grown to be the number one source in Canada for anything S-5!. Reposted with permission – original post can be found at Sky Products Ltd and S-5! Metal Roof Attachments.
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