The Impact of Snow Load on Your Roof and When to Worry

New England winters bring intense weather conditions that can put your home to the test. Between heavy snowfalls and freezing temperatures, homeowners face unique challenges when it comes to maintaining their roofs. One critical concern is snow load. Understanding what snow load is and its impact on your roof can help you prevent costly damage and ensure the safety of your home.

Snow load refers to the weight of snow and ice that accumulates on your roof. It’s not just the depth of the snow that matters but also its density. Fresh snow is lighter, but as it compacts or mixes with rain, its weight increases significantly. Over time, excessive snow load can cause serious problems, including structural damage, ice dams that cause leaks, and higher energy costs due to poor insulation and increased heating demands.

Knowing when to take action is crucial. Watch out for these signs that snow load might be putting your roof at risk: 

• Sagging Rooflines: A roof that appears uneven or drooping is a clear warning sign.
• Unusual Creaks and Noises: These could indicate that your roof's structure is under stress.
• Leaks or Water Stains: Water infiltration from ice dams or excess snow can cause noticeable interior damage.
• Difficulty Opening Doors or Windows: This may point to structural strain as the house shifts under pressure.
  

To gauge whether your roof is at risk, you’ll need to estimate the weight of the snow:

• Fresh Snow: Weighs about 5 pounds per square foot for every 10-12 inches of depth.
• Packed Snow: Denser and weighs around 20 pounds per square foot for the same depth.
• Ice: The heaviest, weighing about 57 pounds per square foot per inch of thickness.



If you’re unsure about your roof’s snow load, review the National Weather Service's report on Snow Loads or consult a roofing professional to evaluate the situation.

The best way to handle snow load is to prevent it from becoming a problem in the first place:

1.  Regular Snow Removal: Use a snow rake to clear snow from your roof after heavy snowfall. Always work from the ground if possible to avoid injury. For larger roofs or heavy snow, consider hiring a professional.
2.  Install Proper Insulation and Ventilation: Adequate insulation and ventilation prevent uneven roof temperatures, reducing the risk of ice dams and excessive snow accumulation.
3.  Address Ice Dams: Professionals can safely remove ice dams and improve your roof’s drainage.
4.  Schedule Roof Repairs: If your roof shows signs of damage, such as leaks or sagging, schedule repairs immediately to prevent further issues.

This season, whether you need a roof repair, or a total replacement, Tip Top Roofing is here to help. As a family-owned and operated business with over 15 years of experience, we’ve earned the trust of thousands of homeowners and businesses across Massachusetts. Our GAF-certified installers are dedicated to providing exceptional craftsmanship and customer care. Don’t wait, contact us today for your free project estimate!