Snow Guards

When winter arrives, homeowners and building managers in snowy regions often face a particular challenge: snow accumulation on rooftops. While the blanket of snow may appear picturesque, it can pose significant risks. This is where snow guards come into play—a critical component of roofing systems designed to protect both the structure and its occupants from winter hazards.
What are Snow Guards?

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Snow guards are small devices installed on roofs that help prevent large amounts of snow and ice from sliding off suddenly. Instead of allowing a massive snow sheet to slide off in one go, snow guards hold the snow in place, allowing it to melt gradually. This controlled release of snow reduces the risk of damage and injury caused by falling snow.

Snow guards come in various shapes and materials, including metal, plastic, and polycarbonate, making them suitable for different roofing types, from metal to shingles.

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Why Are Snow Guards Necessary?
  1. Preventing Damage: Without snow guards, snow and ice can slide off roofs in heavy chunks, which can damage gutters, landscaping, vehicles, or even people below. By holding the snow in place, snow guards help mitigate the risk of such damage.
  2. Ensuring Safety: A sudden snow slide can be dangerous for anyone standing or walking near the building. Snow guards are particularly important for buildings with public access, such as schools, hospitals, and commercial properties, where pedestrian safety is a top priority.
  3. Preserving Roof Integrity: Snow and ice can place a significant amount of pressure on a roof. Snow guards distribute this weight more evenly, reducing the risk of structural damage to the roof itself. This is especially important for older buildings or roofs not designed to handle heavy snow loads.
  4. Protecting Gutters and Downspouts: The weight of sliding snow can easily rip gutters and downspouts from a building, leading to costly repairs. Snow guards help prevent this by keeping the snow on the roof until it melts or can be safely removed.

Types of snow guards

These are typically flat, often with a textured surface, and are installed in rows across the roof. They work well on most roof types and are one of the most common snow guard designs.

These consist of horizontal bars or pipes installed parallel to the roof’s edge. They are more robust and are often used on larger or steeper roofs, particularly those made of metal.

Similar to pipe-style, these are more decorative and resemble a small fence running along the roof. They are common in historic or high-end homes where aesthetics are important.

Installation Considerations

While snow guards are incredibly beneficial, proper installation is key to their effectiveness. Here are some things to consider:

  • Professional Installation: It’s advisable to have snow guards installed by a professional who understands the roof’s structure and snow load dynamics. Incorrect placement can result in uneven snow distribution, leading to potential roof damage.
  • Quantity and Placement: The number of snow guards required and their placement on the roof depend on factors such as the roof’s slope, size, and the average snowfall in the area. A professional installer can help determine the right configuration for maximum effectiveness.
  • Compatibility with Roof Type: Snow guards should be compatible with the roofing material. For example, certain snow guards are better suited for metal roofs, while others are designed for shingle or tile roofs.
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