Red Seal Lather (Interior Systems Mechanic) Practice Exam

In drywall installation, what is the role of taping?

1. To reinforce the strength of the wall

2. To create a seamless finish on joints

3. To increase insulation value

4. To ensure proper moisture resistance

The correct answer is: To create a seamless finish on joints

The role of taping in drywall installation is primarily to create a seamless finish on joints. When drywall panels are installed, there are typically gaps between the edges of the panels, where they meet. Taping involves applying a strip of drywall tape over these joints and then covering it with joint compound. This process helps to blend the edges of the drywall panels, creating a continuous surface that contributes to the overall aesthetic appeal of the wall. By smoothing over the joint with the compound, the transition between panels becomes less noticeable, resulting in a uniform appearance. While taping can provide some degree of reinforcement and might contribute slightly to moisture resistance, its main purpose is achieving a smooth, finished surface that can be painted or otherwise finished without visible seams. It does not significantly enhance insulation values as that role is typically filled by the insulation materials used in conjunction with the drywall.