It might look light and fluffy, but if you’ve ever shoveled snow from a sidewalk then you know looks can be deceiving.

A four-foot deep layer of dry snow weighs about seven pounds per cubic foot. Wet snow is another story. Just two feet of wet snow can weigh between 12 to 18 pounds per cubic foot.

Now imagine all of that weight accumulating right over your head. That’s exactly what’s happening on your roof all winter long.

While newer buildings are often able to hold about 40 pounds per square foot, the capacity depends on a ton of factors. The age of the structure, condition of the roof, and design all contribute to how much weight a roof can bear.

It’s not always necessary to remove snow from your roof, but it’s something you need to monitor throughout the winter.

Why is it important to remove snow from your roof?

• Melting snow can cause ice damming, which often leads to a leaky roof
• Snow accumulating on weak points may cause a collapse
• Melting snow can pool in low spots and cause roof damage

When is it necessary to remove snow from your roof?

• If snow reaches 4+ feet in depth
• If you have a flat roof
• If a lot of snow has already accumulated and another heavy snow is predicted

What to Do (or Not Do) When Removing Snow from a Roof

• Don’t go up on your roof to shovel snow off. Getting on a snow-covered roof is too dangerous and should be left to the professionals.
• Do invest in a snow rake. The right tools make a difference, and this one is designed for the job. It’s an adjustable pole with an arm at the end specifically made to scrape snow off your roof without damaging it.
• Don’t use a metal shovel. Using a metal shovel, or any tool not suited for the job, will cause damage to your roof. Save the shovels for your sidewalk.
• Do start at the ridge and work down.
• Don’t pile snow in one place while removing.
• Do leave a couple of inches on your roof. Trying to scrape all of the snow off could lead to pulling up or damaging shingles.
• Don’t drop snow in the gutters, onto fire escapes, or at entry points. Piling snow in gutters can cause them to droop or pull away from your house. Discarding snow at entry points can lead to slip hazards.

What if the Damage is Already Done?

Whether the snow is the culprit, or you damaged your roof trying to remove it, let North Short Roofing help repair it. We’ve been serving the greater Boston area since 1995 and are always ready to help.

North Shore Roofing can meet all your roofing needs. We’re a family-owned and operated business, and our goal is to keep your family warm and safe year-round. To see how we can help, call us at 978-977-3816 or visit our Facebook page.