You are in Phoenix. We also have a Tucson site.

You are in Phoenix. We also have a Tucson site.

You are in Phoenix. We also have a Tucson site.

What Is Drywall? The Building Material We All Depend On


Drywall, also known as plasterboard, wallboard, or gypsum board, surrounds us in nearly every indoor space we occupy. While we don’t often think about it, drywall is an essential component of modern construction. It’s used in the walls and ceilings of our homes, offices, and countless other buildings where we live, work, and play.

Let’s dive into what drywall is, how it’s made, and why it’s such an important building material.

Key Takeaways

  • Drywall is made from calcium sulfate dihydrate, also known as gypsum, and is widely used in construction for its affordability and fire-resistant properties.
  • The modern version of drywall replaced older, more flammable materials like plasterboard.
  • Drywall is a cost-effective alternative to heavier materials like brick or stone, and it provides excellent insulation.

Now, let’s explore the construction and history of drywall in more detail.

Drywall Construction Explained

At its core, drywall is a simple material made from gypsum, which is calcium sulfate dihydrate. The gypsum is pressed between a facer and a backer to form the drywall panels we’re all familiar with. Additives are sometimes included in the process to give the drywall specific properties, such as moisture resistance or enhanced fire retardancy.

Once the drywall panels are made, they’re used in construction to form the walls and ceilings of buildings. Drywall is lightweight, easy to install, and relatively inexpensive, making it a go-to choice for contractors.

A Quick Bit of Drywall History

The precursor to drywall, called plasterboard, first appeared in the late 1800s in the United Kingdom. It was made using layers of plaster and wool felt paper. While this early version of drywall functioned similarly to modern drywall, it had a major flaw: it was highly flammable. Needless to say, no one wants to live or work in a building prone to catching fire.

Fortunately, the development of gypsum drywall in the early 1900s solved this problem. Gypsum is fire-resistant, making it a much safer option for construction. It also provided other benefits, like affordability and insulation, that made it a preferred choice over more expensive materials like brick or stone.

Why Drywall Matters in Construction

Today, drywall is a staple in building construction because it offers a balance of affordability, ease of installation, and safety. It’s fire-resistant, insulating, and much lighter than alternatives like stone or brick, making it easier and cheaper to work with. Plus, with modern advancements, drywall can now be enhanced with additives for extra moisture resistance or soundproofing.

Whether you’re constructing a new building or making repairs to an existing structure, drywall is an indispensable material that keeps buildings safe, affordable, and comfortable.

Final Thoughts: Drywall’s Role in Modern Construction

While we may not think about drywall often, it plays a vital role in the construction of the spaces we occupy every day. Its fire resistance, affordability, and ease of installation make it the preferred choice for walls and ceilings in homes, offices, and public spaces.

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