40 Hour Property and Building Inspection Practice Test

What is a common problem found on modified bitumen roofs?

1. Blistering

2. Old seams and openings in flashings

3. Ponding water

4. Unstable materials

The correct answer is: Old seams and openings in flashings

Modified bitumen roofs are known for their durability and weather resistance; however, they can have specific issues that arise over time. One of the most common problems associated with these roofs is the presence of old seams and openings in flashings. As modified bitumen roofing ages, the adhesive properties of seams can deteriorate, leading to separations that may allow water infiltration. Flashings are critical components designed to direct water away from vulnerable areas of the roof, such as transitions and penetrations. Over time, these areas can crack, peel, or wear down, resulting in openings that compromise the roof's integrity. Maintaining the integrity of seams and flashings is essential to prevent leaks and potential damage to the underlying structure. Regular inspections and timely repairs can help mitigate these issues and extend the lifespan of modified bitumen roofs. Other responses, while relevant to roofing issues, do not pinpoint the typical problems specific to modified bitumen roofs as accurately. For instance, blistering can occur but is often associated with poor installation practices rather than being a defining issue. Ponding water and unstable materials can be related to other roofing types as well. Thus, recognizing old seams and openings in flashings helps in conducting thorough inspections and maintaining roof quality.