SnoBlox-SnoJax Company

SnoBlox-Snojax is recognized in the construction industry as a trustworthy, nationally known snow guard manufacturer whose predominant business is snow retention.

Our customers are our most valuable asset and we are committed to excellent customer service, “Hands on Ownership” and providing the industry with the highest quality snow guard systems available on the market, at the best possible price with an unconditional warranty!

Our mission is to meet the constantly changing needs of the metal roofing industry by continuously researching, developing, professionally testing and marketing the “Best of the Best” and we plan to be of service for generations to come!

By Brion P. McMullen, President & CEO SnoBlox-Snojax

What are Snow Guards

What are SnoBlox-SnoJax snow guards and why are they needed?

SnoBlox-SnoJax is a water clear snow guard, molded of polycarbonate, which sits in the flat part of a metal roofing panel, where it holds the snow and ice in place until it can melt off gradually and safely. They provide ultimate protection for pedestrians and prevent property damage caused by sliding snow and ice.

Polycarbonates like Lexan® are UV stabilized and virtually unaffected by weather.

Why plastic snow guards instead of metal snow guards?

The plastic snow guard came about in 1976, when the late Jack McMullen was receiving negative feedback on metal snow guards in his own metal building business. In addition to getting brittle and breaking in the cold, some of the metal guards were causing severe dissimilar metal reactions that ended up eroding the metal panel finish. In these cases the conductive liquid or electrolyte was rainwater. During evaporation water becomes concentrated and water films become more conductive, causing the initially benign water to create a dynamic galvanic effect which causes rust. This phenomenon normally begins to occur when water gets trapped in a crevice, such as under a screw or between the base of a metal guard and the metal roof. Even water lying against the face of the metal guard and the metal roof for an extended period time can initiate the deterioration process. Painting the metal guards did not prove to be a reliable solution but it did slow the galvanic reaction process down somewhat. We did find however that with the painted metal snow guards, the corrosion would usually begin to form around friction points and in time would continue to eat its way through the guard and panel.

Generally speaking, the metal guards in each geographical location did not always show identical failures but we did find that the greater the conductivity, the more severe the galvanic effects were. After further research, we also found that salt and industrial pollution significantly increased the conductivity of water so galvanic effects were normally more severe near the coast or in heavy industrial areas.

The solution to this problem was the invention of UV stable Clear Lexan™ polycarbonate SNOJAX snow guards! This idea was so unique; it earned a patent in 1978 as the first non corrosive transparent snow retention device.

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