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Roofs Loads After Heavy Snow
Snow storms can result in several inches of snow and ice on roofs, which adds to the total weight that trusses and rafters must support. A cubic foot of snow can weigh from seven pounds for snow that is new and dry up to 30 pounds for old, compacted snow. Rain falling on accumulated snow will add even more weight. The combination of these factors may cause an excess of snow loading on many roofs.

Watch for Early Warning Signs of Overloading
Be on the watch for these warning signs:
  • Severe roof leaks, indicating torn roof membranes.
  • Ripples or bends in metal supports.
  • Loud popping noises emanating from the building structure.
  • Water ponds in areas where it never accumulated before.
  • Obvious deformities in the roof.

What to do if you Suspect Overloading
When snow removal is necessary, it should be remembered that unsafe procedures may cause a collapse and injuries. Anyone working on a roof must have adequate fall protection and keep in mind that workers and others nearby can be injured by snow being dumped from a roof.

Once it has been determined that the snow must be removed, there are several options for snow removal.

Most roofing contractors are equipped to handle snow removal from the roof of your home and buildings.

Another option is to remove the snow yourself. The best way to do this is to get up on your roof and push the snow off with a broom or shovel. It is important to use ladders, safety ropes and take necessary precautions.

Snow rakes also can be used to remove snow. When using a snow rake, use extreme caution when working near overhead electrical power lines. Also, avoid excessive scraping on the roof or trying to chip off any ice.

400 SW 152nd St, Suite 300  /  Burien, WA 98166  /  Ph: (206) 241-4647  /  Fax: (206) 248-5539
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