I just want to protect a doorway or vent pipe, any suggestions?
We market a product made just for vent pipe and chimney protection called VentSaver. Protecting just a doorway is a tricky proposition. Even though we dont recommend it, in some areas of the country where the snow doesn’t frequently freeze together it is possible to retain snow on partial roof sections. In potentially cold climate areas that have snow and ice accumulate and freeze for several days at a time, the disproportionate loading that is created, extends well beyond the secluded area of guards. This imbalanced type of load is usually detrimental to any type of snow retention device. The general rule of thumb is that snow and ice guards should be equally staggered over the entire roof so the loading is distributed uniformly. Most engineers agree it is better to have equal loading verses unequal loading on a building structure.