Red Seal Roofer Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Wooden roofs are particularly affected by mold growth due to the organic material they are made from. Wood can retain moisture, especially in humid environments or if there are leaks, creating an ideal breeding ground for mold, mildew, and rot. Mold can compromise the structural integrity of the roofing system and lead to significant damage if not addressed promptly. Furthermore, mold on wooden roofs can also pose health risks to occupants as spores can become airborne.

While other roofing materials like asphalt and membrane roofs can also experience mold growth, they are not as susceptible as wooden roofs because they are either comprised of synthetic materials or have protective coatings that inhibit mold development. Metal roofs are usually resistant to mold due to their non-porous surfaces, making them less likely to retain moisture compared to wood.