Red Seal Drywall Finisher and Plasterer Practice Exam

Which type of joint compound is commonly used in drywall finishing?

1. Fast-setting compound

2. All-purpose joint compound

3. Textured compound

4. Bonnet compound

The correct answer is: All-purpose joint compound

All-purpose joint compound is a versatile product favored in drywall finishing for several reasons. Its formulation allows it to be used for embedding tape, filling, and finishing coats, making it suitable for various applications throughout the drywall finishing process. This compound is easy to work with and can be sanded smoothly, which is essential when preparing surfaces for painting or further finish work. It's designed to be applied in multiple coats, ensuring a seamless transition between drywall panels. Additionally, the all-purpose joint compound offers good adhesion properties, enabling it to effectively bond with both the drywall and joint tape, which helps prevent cracks and improves the durability of the final finish. In contrast, while fast-setting compounds are useful for quicker repairs and applications where time is of the essence, they are not as adaptable for all stages of drywall finishing as the all-purpose type. Textured compounds are specifically designed for creating textures on walls and ceilings, which limits their use in traditional finishing tasks. Bonnet compound is less common and may refer to a specific product or brand rather than a standard type of joint compound used in drywall finishing. The all-purpose joint compound is the most widely recognized and utilized in the industry due to its broad applicability and effectiveness in achieving a smooth finish.