Humber/Ontario Real Estate Course 4 Exam Practice

Which element is typically used at the junctions between different types of roofing materials?

1. Standard roof pitch

2. Flashing

3. Attic venting systems

4. Waterproof membranes

5. Insulation barriers

6. Roof sealants

The correct answer is: Flashing

Flashing is a critical component used in roofing systems, particularly at the junctions where different roofing materials meet. Its primary role is to prevent water intrusion by directing water away from seams and joints that are most susceptible to leaks. This junction could be at the intersection of two different roof planes, around chimneys, dormers, or vents. Flashing is generally made from materials such as metal (aluminum, copper, or galvanized steel), plastic, or rubber, depending on the roofing system and design. By creating a waterproof barrier at these vulnerable points, flashing helps maintain the integrity of the roofing system and protects the underlying structures from potential water damage. The other choices address different aspects of roofing but do not specifically serve the purpose of bridging gaps between different materials. For instance, standard roof pitch concerns the slope of the roof for drainage but does not address how to seal the joint. Attic venting systems relate to airflow and temperature regulation within the attic space rather than the external sealing of materials. Waterproof membranes are often used as underlayments and provide a barrier, but they do not serve as a junction element. Insulation barriers focus on thermal control and energy efficiency inside the home, while roof sealants are typically used for sealing laps, seams,