Roof Collapse

  • As the snow on most roofs has frozen, removing any new snow and its additional weight will be very important.
  • If not cleared off, snow piled high on roofs can act as a sponge, absorbing any rain, which we might receive, adding additional stress to structures.
  • Relatively flat roofs are particularly vulnerable.
  • In many other cases, roof ice dams have formed causing water build-up, leading to interior damage.
  • Be on the alert for large accumulating snow build-up or snowdrifts.
  • If roof snow can be removed or ice dams broken up safely from the ground with the use of a snow rake (available at most hardware stores), do so.
  • Avoid working from ladders, as ladder rungs tend to ice up, snow and ice collect on boot soles, and metal ladders and snow rakes conduct electricity if they come into contact with a power line.
  • Protective headgear and eye protection is recommended.
  • Flat roofs can be shoveled clear, but only if it is determined that the roof is safe to stand upon. Exercise care when on the roof to avoid potentially dangerous falls.
  • Flat roof drainage systems should be kept clear to minimize the risk of excess roof ponding in the event of subsequent heavy rainfall or melting.
  • Large icicles can form on roof overhangs, but do not necessarily mean ice damming is occurring. Icicles overhanging walkways can be dangerous and should be carefully removed.
  • All of the above actions should only be performed by able-bodied adults. The snow is heavy, and roofs and other surfaces may be slippery.