Flashing is a thin material, usually metal, installed at roof joints and intersections to prevent water penetration. It directs water away from critical areas such as valleys, chimneys, skylights, and walls. Flashing is one of the most important waterproofing components in any roofing system. Without proper flashing, roofs are highly susceptible to leaks and structural damage. In Vancouver’s wet climate, high-quality flashing installation is essential for long-term roof durability.
