No matter the amount of snowfall, a temperature-sensitive connection with the metal roofing surface is formed. It’s common to presume they’re only needed in regions that sustain heavy winter storms, but in reality, not much snowfall is needed to create a hazardous situation. Protection for All Winter-Weather ClimatesĪll metal-roofed properties in areas where snowfall may happen should take advantage of snow guards. Any impacted areas are susceptible to moisture infiltration, which can corrode remaining roof panels and damage interior building contents. They may also break windows, rip off gutters, tear away siding, demolish vents, flatten seams, and buckle panels. Gaining control is essential because a sudden release – sometimes called a rooftop avalanche – can cause life-threatening harm. Snow guards are devices attached to a metal roof that help snow melt or drift off in small amounts instead of cascading over the side all at once. Easy to install and effective in use, they can keep snowfall in place during heavy storms and allow snowmelt to drain in a controlled manner when temperatures climb. Snow guards are a great way to minimize the dangers of snow shedding on your metal roof. However, that magic can quickly wear off as large amounts of snow and ice accumulate atop a building’s roof, creating a risk for people and property as it falls off without notice. Learn more about installing snow guard systems and weather proofing at season’s first snowfall can be enchanting, creating a winter wonderland. 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. 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. 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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