Environmental Protection Agency (EPA) Model Lead Based Paint Risk Assessor Practice Test

What is drywall?

1. A type of plaster that is applied wet

2. A wall covering made from gypsum board or similar sheets

3. A type of insulation material

4. A framing material for walls

The correct answer is: A wall covering made from gypsum board or similar sheets

Drywall, also known as gypsum board, is a wall covering made from large sheets of gypsum plaster that are sandwiched between layers of heavy paper or fiberglass. Its primary use is in the construction of interior walls and ceilings, providing a smooth surface for paint or wallpaper. The gypsum core serves not only as a structural component but also provides resistance to fire and moisture when treated appropriately. The significance of correctly identifying drywall lies in recognizing its role in both residential and commercial construction. While it has various properties that make it suitable for specific applications, such as sound insulation and ease of installation, it's crucial to differentiate it from other materials. For example, unlike plaster, which is applied in a wet form and hardens upon curing, drywall comes in solid sheets that are easily cut and fastened to framing. Additionally, it should not be confused with insulation materials, which are designed for thermal efficiency and noise reduction, or framing materials, which provide the structural support necessary for a building. Understanding drywall's distinctive characteristics helps in identifying its application in building practices effectively.