NCIDQ IDFX Practice Exam

Which edge type of gypsum drywall is primarily used when appearance is not a factor?

1. Tapered

2. Square

3. Round

4. Beveled

The correct answer is: Square

The square edge type of gypsum drywall is primarily utilized in situations where the aesthetics of the wall surface are not a major concern. Square edges create a flat joint that is easy to install and tape, making it ideal for applications such as utility areas, garages, or other spaces that are less visible and do not require a refined finish. In contrast, tapered edges are designed to facilitate a smooth, flush appearance where finishing is important. They allow for a joint that can be concealed more easily, making them suitable for spaces that will be painted or otherwise finished. Round edges, while providing some benefits in terms of reducing chipping or damage to the edge, are not a standard type for drywall installation primarily focused on appearances. They might be used in specific architectural applications but are not common for standard wall installations. Beveled edges also prioritize a more polished look, as they create an angled edge that helps with mudding and finishing joints smoothly. Therefore, they are typically chosen when appearance and a finished edge are desired rather than avoided. In summary, the choice of square edges is best suited for scenarios where the visual impact of the drywall application is limited, ensuring practicality over aesthetics.