Flashing is used to prevent water and moisture from penetrating joints. Joints are generally found wherever two surfaces meet. Common areas where flashing is found are where the roof meets the sidewall of a dormer, at the point where the roof meets the brick or stone of a chimney or in the valley where different sections of roof meet.
When inspecting the flashing we start with the exterior and make sure that there is flashing present in the required areas and that it has been done properly and is in good condition.
If flashing is not present in the required areas, is improperly done or damaged, moisture can enter the structure causing mold and structure damage over time.
Flashing is also inspected from the interior, especially if the attic area if visible. Interior walls of concern are inspected for moisture penetration using visual observation, a moisture meter and thermal imager.