More and more property owners are selecting materials like metal, slate or clay tile for their roofing projects. Driven by longevity, energy efficiency, modern appearance, and environmental impact, consumers understand that these materials are both eco-friendly and built to last. But what’s not always known or considered is the need for equally durable, high-performance, snow guards for sustainable roofing.

While premium materials undoubtedly provide numerous benefits, they’re often low-friction, meaning limited opportunities for snow and ice to “grip” the roof and melt away safely. Instead, when snow and ice build up becomes too heavy, it releases en masse from the roof’s surface, resulting in an avalanche.

The risks associated with roof avalanches are something property owners must take seriously. Just 6 inches of wet snow sliding from a standard residential roof can weigh over 11,000lbs⁽¹⁾ (yes, you read that right). Proper snow retention is a non-negotiable safety measure for these materials to control melt, safely distribute weight, and prevent massive slides.

Hidden Risks of Sustainable Roofing: Sudden Snow Shedding

Metal, slate, and tile roofs are gaining popularity for good reason. They’re exceptionally durable, often lasting well over 50 years, improve home energy efficiency, and, for the eco-conscious consumer, have the added benefits of reducing landfill waste while often being made from natural or recyclable materials.

It’s not hard to understand the appeal. And, it’s equally as easy to assume, because these materials are smooth and slick, that snow and ice would naturally shed from the surface without building up. Unfortunately, that’s not the case.

Snow and ice still accumulate on metal, slate, or tile roofs and can be even more dangerous than you’d expect. That’s because unlike asphalt shingles, which provide some level of friction to hold snow in place, sustainable roofing materials aren’t capable of holding snow in the same way. What comes next is a sudden release of debris that can easily:

• Damage gutters, landscaping, and lower roof sections

• Crush HVAC units, vents, or other rooftop equipment

• Damage ground level equipment like outdoor cooling systems

• Pose serious injury risks to people and pets below
  

Why Snow Guards Are Essential

High-performance snow guards help property owners manage how snow and ice melt away from roof surfaces. Instead of allowing large, dangerous sheets of snow to become hazards, Alpine SnowGuards designs products specifically for metal, slate, or tile roofs that break up debris into smaller chunks allowing it to melt gradually. And, our engineers create customized layouts for each project based on actual roof specifications (size, pitch, material, etc.), not guesswork. This is essential for:

1. Protecting Long-Term Investments

Metal, slate, and tile roofs are premium systems with higher upfront costs. Our snow guards help protect that investment by preventing damage to the roof, structure, and surrounding property.

2. Enhancing Safety and Reducing Liability

Snow slides are unpredictable and dangerous. Retention systems mitigate risk and reduce liability. For commercial properties, HOAs, and rental buildings, this is especially important to prevent owners from being held responsible for injuries or property damage.

3. Supporting Structural Integrity

Well-designed snow retention works in harmony with the roof’s structure, accounting for factors like pitch, climate, and material. This ensures that snow loads and drainage are managed properly without overloading specific areas or causing structural stress.

Final Thoughts

Sustainable roofing materials offer undeniable benefits to property owners but choosing a premium sustainable roof without incorporating an equally durable snow retention system can cause unexpected safety concerns.

Sustainable roofing and snow guards should be viewed as a package deal, not separate decisions. And, even if project budgets don't allow for installation right away, having a plan to retrofit snow guards to sustainable roofing is important. By integrating snow guards into project plans from the start, contractors and property owners can ensure these roofs perform as safely as they do sustainably.

Sources:

1. https://www.abc10.com/article/news/geek-lab-different-snow-types-have-different-weight/103-bdafb700-e173-4a99-8aeb-c9600e365c31