The best installations are aimed at retaining the snow in place rather than trying to stop it at the eaves after it has begun to slide. This principal is doubly important where adhesive mounted devices are relied upon.
eGutterâ„¢ recommends that for the most effective use of snow guards, place 2 groups of 3 staggered rows, one at the eave and one midway on the roof slope. On long slopes, multiple groups are recommended with a 6 ft. maximum space seperation.