National Occupational Competency Testing Institute (NOCTI) Carpentry Practice Exam

Which moulding type can also serve as a decorative element while concealing wiring?

1. Crown Moulding

2. Baseboard

3. Casing

4. Mullion

The correct answer is: Crown Moulding

Crown moulding is specifically designed to be installed at the junction of walls and ceilings, providing an elegant transition that enhances the aesthetic appeal of a room. Its design allows it to not only serve a decorative purpose but also effectively conceal wiring. This characteristic makes it particularly valuable in scenarios where electrical cables or other wiring need to be hidden from view, while still maintaining the overall design integrity of a space. Additionally, crown moulding’s profiling can create visual interest and establish a more polished look, functioning as a practical and stylistic element in interior design. In contrast, other types of mouldings, such as baseboards and casing, serve their own respective purposes. Baseboards primarily protect the wall from scuffs and provide a finished look at the bottom of walls, while casing frames doors and windows, contributing to their visual presentation but lacking the same capacity for wiring concealment. Mullions are vertical or horizontal bars between panes of glass and do not serve a decorative or concealing function in the same way that crown moulding does.