Most roof collapses are avoidable snow and ice build-up Insurance Institute for Business & Home Safety The Insurance Institute for Business and Home Safety Insurance Institute for Business and Home Safety Insurance Institute for Business & Home Safety Insurance Institute for Business & Home Safety Insurance Institute for Business & Home Safety weight of snow and ice on your roof The Insurance Institute for Business and Home Safety Insurance Institute for Business and Home Safety The Insurance Institute for Business and Home Safety How Much Snow Can Your Roof Handle? Prevent Roof Collapse on Homes The Insurance Institute for Business and Home Safety Prevent Roof Collapse on Homes