Monthly Archives: April 2013

SnoBar Metal Roof Snow Retention

By Brion P. McMullen, Bio 

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SnoBar and ColorBar are premium snow guards that can be delivered in a variety of color matched finishes.  The SnoBar system was the first of it’s kind to be patented and remains the fastest installing system on the market due to it’s unique top-loading stainless steel clamps.  The bar systems can be mounted to various types of metal roof systems including standing seam, r-panels, ag panels, tpo/membrane, shingles, etc.  The ColorBar system is one of the very few snow bars on the market designed to work on 42” wide panels while still proving a lifetime warranty.  Optional IceStoppers can be used to prevent snow and ice from sliding

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Check it out all our snow guards and see why contractors call the Snobar “The S-5! killers”!  When “The Right Way!” goes wrong, SnoBar and ColorBar snow retention systems are the total solution.

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The Pitfalls of Home Made Snow Guards

By Brion P. McMullen, Bio

SnoBlox-Snojax was recently asked by a homeowner to consult on a snow guard failure in Wisconsin.  Unfortunately, when the system failed, it damaged the roof panels so severely that the entire roof is now being evaluated for replacement after just three years.  Our goal is to identify the contributing factors of the failure and to design a proven snow guard system that will last the life of the new roof.

As you can see in the pictures, the contractor used 1.5”aluminum angle to fabricate a makeshift bar system on a 9” r-panel.  The make shift snow bar was pre-drilled and roofing screws were used to mechanically fasten through the major ribs and down into the sub roofing.  The roof has a 6/12 pitch and only one row was used on this 50psf ground snow load project.  The system made it 3 years before failure and possibly ruining the entire metal roof.

FRONT SIDE GARAGE ROOF DAMAGE

Home Made Snow Guards Caused Severe Damage

FRONT SIDE GARAGE ROOF DAMAGE

Make Shift Snow Rail System Hanging

These types of homemade snow retention systems are very common and have a very high failure and roof damage rate.  The strength of this type of Snow Guard system is limited due to the attachment method and deflection strength of the under-designed aluminum bar.  This system also failed to equally distribute the snow load across the roof area while controlling the live load.

Failed Home Made Snow Guard System

Home Made Snow Guard System on The Ground.

Home Made Snow Guard Failure

Failed Home Made Snow Retention System

Solution : Once the customer has his new roof installed or repaired, he will have a couple of options.  The first will be an adhesive or screw mounted SnoBlox-SnoJax polycarbonate system comprised of multiple staggered rows of snow guards designed to equally distribute the snow load across the roof area and control the live load.

His other option will be a properly designed and installed SnoBar or ColorBar system.  We are able to use screw down brackets for r-panels and non-penetrating clamps for standing seam panels.  Each of these options are covered by our lifetime warranty.

We will keep you posted on the new roof and snow guard system replacement in the coming weeks.

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