40 Hour Property and Building Inspection Practice Test

Which roofing material is least likely to have problems related to a low roof slope?

1. Asphalt shingles

2. Roll roofing

3. Metal roofing

4. Clay tiles

The correct answer is: Roll roofing

Roll roofing is considered the least likely to have problems related to a low roof slope due to its design and manufacturing. It is specifically designed for low-slope applications, as it comes in large sheets that can be installed with seams that are typically rolled or sealed. This construction minimizes the potential for water intrusion, which is a common concern with low-slope roofs where water may not drain effectively. As a result, roll roofing is often used on structures where pitch is not sufficient to allow for other roofing materials that might require a steeper angle for proper water drainage and performance. This makes it more suitable for buildings with low roof slopes compared to other options that may experience challenges with pooling water or leaks. In contrast, asphalt shingles, metal roofing, and clay tiles generally require a steeper slope for optimal performance, as they are not designed to shed water efficiently at low slopes, which increases the risk of leaks and structural issues over time. Therefore, roll roofing stands out as the most appropriate choice for low-slope roofing configurations.