The terms plasterboard and drywall are often used interchangeably, leading many people to believe that they are the same thing. While both materials serve a similar purpose in construction — creating smooth walls and ceilings — there are some subtle differences in terminology, composition, and usage depending on the region. In essence, plasterboard and drywall refer to the same general product, but understanding the distinctions between them can be helpful, particularly for homebuilders, contractors, or DIY enthusiasts.
1. What is Drywall?
Drywall, also known as gypsum board or sheetrock (a popular brand name), is a panel made from gypsum plaster sandwiched between two sheets of thick paper. It is widely used in the construction of interior walls and ceilings. Drywall became popular because it offers a faster and more efficient alternative to traditional plaster, which requires multiple layers and a longer drying time.
Drywall is manufactured in large sheets, typically 4 feet by 8 feet, though other sizes are available for different applications. It can be easily cut to size and installed by fastening it to wooden or metal studs. The joints between drywall sheets are then taped and covered with joint compound to create a smooth, seamless surface ready for painting or wallpaper.
2. What is Plasterboard?
Plasterboard is a term used primarily in Australia, the UK, and some other regions to describe the same product known as drywall in North America. Like drywall, plasterboard consists of a gypsum core sandwiched between two layers of paper. It is used in the same way — for building internal walls and ceilings in residential and commercial construction.
So, in terms of composition and function, plasterboard and drywall are the same product. The key difference lies in the terminology, with “plasterboard” being more common in British and Australian English, while “drywall” is the preferred term in American English.
3. Different Types of Drywall/Plasterboard
Both drywall and plasterboard come in various types designed for specific uses. The core product remains the same — a gypsum-based board — but different additives or surface treatments can provide additional properties:
- Standard Drywall/Plasterboard: This is the most commonly used type for general wall and ceiling applications in homes and buildings. It offers no special resistance to moisture or fire but works well in dry areas.
- Moisture-Resistant (Greenboard): Often used in bathrooms, kitchens, or other areas with high humidity, moisture-resistant drywall has a special coating that helps prevent water damage.
- Fire-Resistant Drywall: Fire-rated drywall, or Type X drywall, contains special additives that enhance its fire resistance, making it ideal for use in garages, furnace rooms, or between living spaces in multi-unit buildings.
- Soundproof Drywall: This type of drywall includes sound-dampening materials, making it ideal for reducing noise transmission between rooms.
- Impact-Resistant Drywall: Designed for high-traffic areas or spaces prone to damage, impact-resistant drywall features additional layers of protection to withstand bumps and blows.
4. Installation and Finishing
The installation process for both plasterboard and drywall is virtually identical. Both materials are attached to the framework of a building using screws or nails, and the seams are filled with joint compound and tape. Afterward, the surface is sanded smooth and primed for painting or other finishes.
One common misconception is that “plasterboard” is associated with traditional plaster finishes. However, despite the name, plasterboard is different from traditional wet plaster. With plasterboard (or drywall), there’s no need to apply multiple coats of plaster to the surface. Instead, it provides a ready-made smooth surface once the joints are finished.
5. Regional Preferences and Usage
As mentioned earlier, the term “drywall” is widely used in North America, while “plasterboard” is more common in the UK, Australia, and other parts of the world. In the United States, contractors and builders typically refer to the product as drywall, and in Australia, plasterboard is the standard term. Regardless of the name, both products are the same, and the differences are merely linguistic.
Conclusion
In summary, plasterboard and drywall are essentially the same product used for the same purpose — creating smooth walls and ceilings in modern construction. The difference lies mainly in the regional terminology, with “drywall” being more common in North America and “plasterboard” being the preferred term in Australia and the UK. Both materials are composed of gypsum and are available in various types to meet specific needs, such as moisture resistance, fire protection, and soundproofing. Whether you call it drywall or plasterboard, it remains one of the most widely used and versatile building materials in the world.