Red Seal Roofer Practice Exam 2025 – Complete Test Preparation

Question: 1 / 400

What is an ice dam, and why is it a concern for roofing?

A structure to hold ice in place

A ventilation system for the attic

A ridge of ice preventing snow drainage

An ice dam is a ridge of ice that forms at the edge of a roof, typically when snow melts and then refreezes as it reaches the colder eaves. This phenomenon occurs primarily in winter and can be a significant concern for roofing because it prevents proper drainage of melting snow and water. When an ice dam forms, it can cause water to back up under shingles, leading to leaks and potential water damage within the structure. This risk emphasizes the importance of adequate insulation and ventilation in preventing the build-up of heat in the attic, which contributes to the melting of snow on the roof. Proper management of temperature differences is critical for avoiding the formation of ice dams and ensuring the longevity and effectiveness of roofing systems.

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A process to insulate roofs

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