The function of a snow fence is to prevent snow from falling uncontrollably from the roof that can injure people and damage property underneath or around your roof, and it serves as an anchor point for personal protection equipment. It also serves as foot support when working near the roof foot or roof break.
Upon the installation of a snow stopper and/or snow fence, it is of the utmost importance to adapt the amount to the actual geographic location, amount of precipitation and the design of the roof. Remember that so-called snow pockets can form. This is where more snow ends up and then an extra snow fence or snow stopper is needed to keep the snow in place.
When there is a risk of overloading the snow fence and the roof, the roof must be shovelled in order to prevent damages to the roof, as well as accidents.