American Design Drafting Association (ADDA) Certification Practice Exam

Gypsum board, commonly known as drywall, is primarily used as an interior finishing material. Its main purpose is to create interior walls and ceilings, providing a smooth surface that can be painted or finished in various ways. The lightweight nature of gypsum board allows for easy installation and makes it a popular choice in residential and commercial construction.

The material is composed of a gypsum core encased in paper or fiberglass mat, which contributes to its fire resistance and sound-dampening qualities, making it suitable for a wide range of interior applications. Additionally, gypsum board can be treated with various additives to enhance its properties, such as moisture resistance for areas like bathrooms.

While gypsum board can be utilized in various ways, it is not suitable for exterior finishing, structural support, or as a waterproofing layer. These applications require different materials that provide the necessary durability, resistance to environmental factors, and structural integrity.