40 Hour Property and Building Inspection Practice Test

Where is flashing typically found on exterior walls?

1. Top of the roof

2. Over windows and doors

3. Inside corners of the building

4. Only at the foundation

The correct answer is: Over windows and doors

Flashing is a critical component in building construction as it serves to prevent water intrusion. It is typically installed in areas where water can collect or where two different building elements meet, which is why you will commonly find it over windows and doors. When it rains or when moisture accumulates, water can seep in through gaps or seams around windows and doors. Flashing directs this water away from these vulnerable areas, directing it to the exterior of the building. This is essential in protecting the structural integrity of walls and preventing mold, rot, and other moisture-related damages. In contrast, while flashing can indeed be found in other areas, such as at the top of the roof and at the foundation, the most crucial and common application on exterior walls is above openings such as windows and doors, making this the appropriate choice.