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Generally, snow removal from a roof should occur once over six inches of snow accumulates, especially if you notice that ice dams have formed. Without ice dams, you can let the snow accumulation hit 12 inches before removing it. However, the amount of snow that is too much for your roof also depends on the sturdiness of your roof and the compactness of the snow. If your roof needs maintenance or has structural issues, it’s best not to let the snow accumulate too much for fear of collapsing.

How much snow can a roof hold? The answer could help you to avoid roof collapse—a worst-case scenario, of course. For most roofs, you can expect it to withstand four feet of fresh snow, two feet of packed snow, or two to three feet of a mix of old and new snow. However, your roof will only be able to handle one inch of ice. The actual weight capacity of your roof may vary, so check with whoever built it for exact details.

If you’re looking at how to remove snow from solar panels, heat from the sun usually melts the snow within a few days. However, snow removal might be necessary for winter solar power production in areas with deep snow during the winter. There are brushes with telescoping handles and gentle heads to brush away snow. It’s best to stay on the ground if possible and avoid using tools that could scratch the surface of the solar panels, like a snow shovel or broom.

The best way to save money on snow removal is to sign up for a seasonal contract that guarantees service throughout the entire winter. Most companies charge between $200 and $600 for this service, and they’ll often give you a break on the price if you extend annually. Of course, savings will depend on your area. If you live in a moderate climate where snowfall may or may not occur, you could pay more than you need during a light snow year. Still, it’s usually a safe bet to sign a seasonal contract.