Written by Unison Risk Advisors
As winter approaches, many people begin to prepare for icy roads and frozen pipes, but one critical risk often goes overlooked: roof damage or collapse due to snow and ice loading. The winter of 2025 brought record-breaking snowfall and precipitation across the country, resulting in tens of millions of dollars in property damage. With extreme weather events becoming more frequent, now is the time to assess your building’s readiness.
Why Are Roof Collapses on the Rise?
Several factors contribute to the increasing number of roof failures during winter storms:
- Excessive snow loading: Heavy, wet snow adds significant weight to roofs. Even dry snow, when accumulated, can exceed structural limits.
- Ice dams: When melting snow refreezes at a roof’s edge, it can block drainage and cause water to get backed up, leading to leaks and structural damage.
- Aging or inadequate roof design: Older buildings may not have been built to withstand the snow loads in certain areas, causing roof damage or collapse.
- Poor maintenance: Clogged gutters and drains prevent proper runoff, increasing the risk of ice buildup and water damage.
- Low roof pitch: Flat or low-sloped roofs are more prone to snow accumulation and drifting, which can create uneven stress points.
What Can You Do to Prevent Roof Collapse?
Proactive maintenance and planning can significantly reduce your risk:
- Manage snow accumulation: Remove snow in stages to prevent excessive buildup. Use trained personnel or professional services, and always follow safety protocols to prevent injuries and building damage.
- Maintain drainage systems: Clear gutters, downspouts and roof drains before snowfall. Regular inspections and ventilation maintenance during winter can help prevent ice dams.
- Assess structural integrity: Have a qualified contractor evaluate your roof’s snow load capacity and identify any areas needing reinforcement.
Warning Signs of Roof Stress
Be alert for these red flags:
- Sagging rooflines
- Cracks in walls or ceilings
- Creaking or popping sounds from the roof or attic
- Water leaks after snowmelt
If you notice any of these signs, evacuate the building immediately and contact a local building authority or qualified contractor.