When this method is used, the sliding force of the snow is transferred to the clamp and then into the roof panels themselves. endstream According to Precision Snow-Guards[2]. tDA-$B uR, P[HdB"(TYG3~2aC8SRyc7M 6*/])tuE f#-k_((H `C'Jr2vy%2u6cr 9|^}!s+RlQdL u_ -7+$X{lOY{"lW|L+TE r]Ep}1{'9/h]~Bl_ ISBN-10: 1405161035 Go up the roof 10 feet and repeat the staggered pattern of guards in the center of every valley. Go up the roof 10 feet and repeat the staggered pattern of guards in every valley as placed below. Again, the strength of the structural attachment mounting method is also important and should also be proven and matched to the in-service loads to which the snow guard will be exposed. Snow load: Up to 45 PSF ground snow load. snow guards, {.p:sDQH$B The majority of the snow load is carried on the bottom half of the roof due to heat loss, wind, sun exposure and gravity., Exact placement of snow guards is a mixture of art and science, Haddock adds. We have no relationship with advertisers, products, or services discussed at this website. Email: info@atas.com, Website: http://www.atas.com/Company/Contact.aspx. Snow guards should always be placed at the lower half of the roof plane. Do not exceed 10 feet vertically between rows of guards. YG! In its newest technical bulletin, Qualifying Snow Retention Systems for Metal Roofing, MCA recommends snow guard systems for metal roofs to be manufactured from non-corrosive metals. Panel: Valley width between 16 inches and 24 inches. Since they represent a load chain to transfer the sliding forces of snow into the building structure, each link in the chain must be proven to be able to withstand the forces to which it will be exposed. Use: 1 snow guard per valley every 5 feet of roof. <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 611.76 791.76] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
When possible, always attempt to divide the roof areas into equal sections, with equal distance between rows, without exceeding the manufacturer maximum placement guidelines. Experts point out that for the placement of individual snow guards (as opposed to long horizontal snow fences or snow brakes) depends on the pitch of the roof. But with metal roofs, you must consider the risk of roof top avalanches. Utah State Old Main Building DaVinci and Snow Guard Re-roof Project, I Have Snow Guards But Snow Still Comes Off My Roof, Snow Guards on the Historic Fleur Du Lac Estates, Snow Guards for Metal Roofs - Introduction. products, you will need to perform additional steps to waterproof these roof penetrations, and you will have to know something about sealant chemistry, part design, sealant selection/sourcing, etc.). Axqb"$3Z-XV+[B%6ac\MpP$BPNogPkXqTa6gIevSqT.v}
cH (dEYFQdE Pitch:1/2/12 to 2/12 pitch. /Metadata 6 0 R Pitch: 3/12 up to 4/12 pitch. At S-5!, we take the magic out of all that with web-based tools, enabling you to do all this quickly and easily. Either type can workcontinuous rail or discontinuous cleat-type systemsprovided that either is appropriately tested, correctly installed and proven by engineered calculation to resist the in-service loads presented on a site-specific basis, says Rob Haddock, CEO of Colorado Springs, Colo.-based S-5! Starting at 6 inches from the bottom edge, place a snow guard in the center of each valley, in a staggered pattern, across the entire roof area. 8032[ **xCa Call Toll Free: (877) 414-7606 A row of guards placed along the eave or gutter edge of Stick-on systems appear on the surface to be a very convenient and lower cost option. Qualifying Snow Retention Systems for Metal Roofing, Fastener Compatibility with Profiled Metal Roof and Wall Panels. And these tested, proven and scientific holding strengths, are engineered to the specifics of your projectnot using someones by guess or by golly assessments. Continuous snow guards are otherwise known as rail type snow guards, snow fence, snow rail or pipe-style snow guard. The Woodbinder Eclipse is a commercial grade roofing screw that is manufactured specifically for this type of work. endobj
Starting at 1 foot from the bottom edge, place 2 snow guards equally spaced apart in the valley, in a staggered pattern, across the entire roof area. All snow guard devices rely upon the compressive strength of a bank of snow to resist its downward migration. Drilling requires holes. Whether residential or commercial, you have already madea smart decision by choosing a roof that has the longest service life possible. Historic Preservation Technology: A Primer, Robert A. ] According to the MCA technical bulletin, sealants and washers can be used to protect the sealing material from direct exposure to sunlight. When possible, always attempt to divide the roof areas into equal sections, with equal distance between rows, without exceeding the manufacturer maximum placement guidelines. For panels wider than 16", please scroll down to see the next drawing below. Alpine Snow Guards recommends placing a three row pattern on the lower roof, 24" o.c. The International Energy Conservation Code (IECC) and the American Society 1994-2022 Modern Trade Communications Inc. No data on this website may be downloaded or copied for use on other websites or in other publications without prior written consent from this sites webmaster. Tel: (860) 229-SNOW (7669). A properly XK Panel: Valley width less than 16 inches. Do not exceed 15 feet vertically between rows of guards. Colorado Springs, CO 80908 endobj {.2&{.: Use: 1 snow guard per valley every 8 feet of roof. What is the best way? If the slope of the same roof is changed to 7:12, the force changes to 1,008 pounds per linear foot.. McGraw-Hill Professional; 4 edition, 2006, ISBN-10: 007145828X, ISBN-13: 978-0071458283. 2022 S-5!. X 0[GA9DAC}T:Qr6vYnBY-\j#'3 Copyright var date = new Date(); document.write(date.getFullYear()) IceBlox Inc. d.b.a. 4 0 obj Starting at 1 foot from the bottom edge, place 2 snow guards equally spaced apart in the valley, in a staggered pattern, across the entire roof area. Spacing requirements for snow retention devices vary depending on the roof slope or pitch. Violators will be prosecuted. Exposed fastener heads should be AlZn alloy or 300 series stainless steel, and washers should be black EPDM, adds Haddock. world that receive winter precipitation, snow and ice on glossy coated metal Do not exceed 15 feet vertically between rows of guards. 401 Aspen Airport Business Center Aspen, Colorado 81611, Email: sales@pacificsheetmetal.net, Tel: 970.925.2454. Tags: As Haddock notes, the steeper the roof, the greater the forces are that act on the snow guard assembly. Pitch: 3/12 up to 4/12 pitch. /Subtype /XML For Example: if your roof sheets are 16 feet long, your roof would require a row at 1 foot from the bottom and at 8 feet up from the bottom. metal roof brackets, /Domain [ 0 1 Isolating snow guards on partial roof sections such as just over doorways or roof vents is not recommended. 143 Forest Lane, PO Box 607, Grove City, PA 16127 - 866-641-7141 (We recommend this book). When choosing washers or sealants for waterproofing, use ones with the same chemistry as the washers and sealants present in the roof system to ensure a similar expected service life. (888) 825-3432, Email: info@s-5.com, Website: http://www.s-5.com/snow/. MCA (Metal Construction Association) technical documents are the greatest aid available for snow guard selection criteria and downloads are free. Starting at 1 foot from the bottom edge, place a snow guard in the center of each valley, in a staggered pattern, across the entire roof area. When possible, always attempt to divide the roof areas into equal sections, with equal distance between rows, without exceeding the manufacturer maximum placement guidelines. With S-5! Select your pitch below to get a general spacing guideline. - Berger Snow Guard Guidelines, op.cit., retrieved 5/2/2014. Continue reading at SNOW GUARD BUILDING CODES? Privacy Policy | Terms of use | Legal & IP. In fact, we have many high-end projects located in some of the snowiest places in North America with thousands of snow guards attached using the Woodbinder Eclipse. , ISBN-13: 978-0764330018, Low Slope Roofing, Manual of, 4th Ed., C.W. area to keep snow and ice from shifting initially. <>/PageLabels 547 0 R>>
A quality snow retention system will help you maintain your roof, avoid personal and property damage, and efficiently and safely allow snow to melt off your structure. Do not exceed 8 feet vertically between rows of guards. %PDF-1.5
products, you will need to perform additional steps to waterproof these roof penetrations, and you will have to know something about sealant chemistry, part design, sealant selection/sourcing, etc.). Generally speaking, if installing one row and using a continuous rail-type system, your snow retention would be installed approximately 1 to 2 feet from the eave, explains Tom Grant, branch manager at Dynamic Fastener. The third is chemically-attachedand uses a stick-on method, which involves gluing individual snow guards to a roof. But there are a number of methods to mount snow guard systems. Once frozen precipitation Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly. Email: info@rockymountainsnowguards.com, Rocky Mountain Snow Guards For Example: if your roof sheets are 8 feet long, your roof would require a row at 6 inches from the bottom and at 4 feet up from the bottom. Jerod Webber, sales manager, at Raytown, Mo.-based Dynamic Fastener, notes that engineering and testing is one of the main focuses when choosing a snow retention system. standing seam metal roof. Toll-free: 800-523-8852805, Englewood, CO 80110. Griffin, Mcgraw-Hill (Tx); 2nd edition (July 1982), ISBN-10: 0070247838, ISBN-13: 978-0070247833, Concrete Folded Plate Roofs, C. Wilby PhD BSc CEng FICE FIStructE (Author), Butterworth-Heinemann, 1998, ISBN-10: 0340662662, ISBN-13: 978-0340662663, Copper Roofing, Master specifications for copper roofing and sheet metal work in building construction: Institutional, commercial, industrial, I.E. SNOW GUARD SPACING & PATTERN at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. A combination of testing, science, mathematics and quality control are required for the proper design of snow guard systems. The company provides a line of very sturdy snow rails or fences that mount to the seams of a metal roof. The compressive strength of snow increases as it compacts from its own weight, increasing its density. uR( -IdlH"(dEYG! Our Comment Box is provided by Countable Web Productions countable.ca, Click to Show or Hide Citations & References, HOME INSPECTION EDUCATION COURSES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES, "Snow Guard Technical Appendix", A7 1/12, Amerimax Home Products, Inc., Tel: 1-800-827-4369, Website: http://www.amerimax.com, retrieved 5/2/14, Email: info@amerimax.com, original source http://www.amerimax.com/pdf/catalog/snow%20guard%20tech.pdf, [1] Berger Snow Retention Systems, Berger Building Products, 805 Pennsylvania Blvd. x]$?RTt]BZB0WB3qw3EXVWd 3s3;}_~~}}}}y9goluG/?~^_n~:HK}qMIi{m}_G}}pTso__Ed@nG#/nl?-r&,`NTW2nP R1@,fQ ZoB3@b@aXIN\N* Please be aware that our site is best experienced with Ad Blockers turned off. Apologies for the delay. For panels wider than 16", please scroll down to see the next drawing below. Use aluminum with stainless hardware on coated steel and zinc roofing; brass alloys or stainless for copper roofing; anodized aluminum or stainless for stainless roofing, adds Haddock. In parts of the This article describes how to lay out the snow retainer or guard pattern on a roof in order to provide an effective snow retention system. required) to anchor snow guard brackets, to ensure secure placement and the long-term service life of the roof. Snow load: Up to 45 PSF ground snow load. endobj Starting at 6 inches from the bottom edge, place 2 snow guards equally spaced apart in the valley, in a staggered pattern, across the entire roof area. <>
When deciding on the right type of snow retention system, Haddock says to be sure the design is adequate and specific to your application, with appropriate testing. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. Go up the roof 8 feet and repeat the staggered pattern of guards in every valley as placed below. 76 Note: Alpine Snow Guards (ret. In most cases, this means using high-quality butyl copolymer tapes and part designs that protect the sealant from UV exposure and over-compression.. 3 0 obj using the process of either clamping to the seam (non-penetrating) or screwing through the roof material (penetrating). /Domain [ 0 1 0 1 0 1 0 1 Attachment Solutions, Aspen Office & Shop, When installed, stick-on snow guards typically have the lowest holding strength (which continues to diminish with age). [emailprotected] (717) 697-1900. Metal roofing is indeed a slippery slope (pun intended), as you must consider the risk of roof top avalanches (personal danger and property damage), as well as the need for snow removal maintenance. evenly distributed snow load will preserve the long-term integrity of the actual The collection of snow on a roof can produce significant sliding forces, which can cause the snow to fall suddenly. And, a standing seam roof should use clamp-to-seam attachments that are metallurgically compatible with the roof material. Panel: Valley width less than 16 inches. These parts attach directly to the roof with a glued application. Here at S-5! 289 Harrel Street Griffin, Richard Fricklas, endobj
Clamp designs that are seam-specific, or for use on certain metal thickness, have been tested with specific set screw torque values, explains Webber. This is important because tested holding strength is dependent upon that torque, he says. Lesser quality paint finishes on the snow guards will fade more rapidly than the roof, producing a very unsightly mismatch within a few years, Haddock notes. [ /DeviceN [ /Cyan /Magenta /Yellow /Black /SM 0.001007 /Length 75 0 R seam style metal roof. U.V., moisture and temperature change, etc.). Allentown, Pennsylvania 18106 Pitch: 5/12 up to 6/12 pitch . There are unitized snow guards, otherwise known as discontinuous snow guards, snow cleats or pad style snow guards. Individual snow guard mounting methods vary depending on the roof covering material. This first method uses a seam-clamping attachment. It is critical to understand the unpredictable nature of snow melton a metal roof. Because they know our rigorously researched, tested and quality engineered products deliver unprecedented value and innovative excellence. Young, Wiley (March 21, 2008) For example, a 4:12 roof that is 50 feet from eave to ridge with a 40-psf design roof snow load will exert 633 pounds per linear foot of eave on the snow guard assembly, he explains. Starting at 1 foot from the bottom edge, place a snow guard in the center of each valley, in a staggered pattern, across the entire roof area. The buildup of snow and ice on a pitched metal roof causes challenges in many areas around the country. When possible, always attempt to divide the roof areas into equal sections, with equal distance between rows, without exceeding the manufacturer maximum placement guidelines. There are three basic methods available for mounting snow retention systems to roofs. And holes in a metal roof need to be properly weather-proofed to prevent leakage. One exception, Haddock says, is for systems anchored with seam clamps, a torque wrench is needed to check that the electric driving tool is delivering the torque specified by the manufacturer. When possible, always attempt to divide the roof areas into equal sections, with equal distance between rows, without exceeding the manufacturer maximum placement guidelines. XyH{?TfBW5" 7y&?9RT7oW[?fGGKe4o~zz.~zoc$u8mM6|x-uQ
=Ew;Cg!;@u! A; `8Da?l xEKs\_|a1n~$z^Etz`\uL# ?Gjw]*`k%6S1yt/m*Iz3^M? Use: 1 snow guard per valley every 10 feet of roof. For Example: if your roof sheets are 26 feet long, your roof would require a row at 1 foot from the bottom and at 13 feet up from the bottom. Snow load: Up to 45 PSF ground snow load. With S-5! We give recommended side spacing between individual snow guard devices & we discuss an important consideration to avoid structural damage: how far up the roof from the eaves should the first row of snow guards begin. components, we take the guesswork out and provide an appropriate system with sealants factory-applied. ISBN-13: 978-1405161039, Built-Up Roof Systems, Manual, C.W. installed snow guard system canmitigate this condition. << For Example: if your roof sheets are 26 feet long, your roof would require a row at 1 foot from the bottom and at 13 feet up from the bottom. For through-fastened roofs, Haddock says sealants should be at least equal in performance to those used in the roof itself. or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.
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