Is plasterboard another name for drywall?
Technically no but the terms are used interchangeably nowadays. Plasterboard used to be a rough textured sheet product used to provide a base for the final skim-coat plaster. After sheet rock was perfected in the mid 60s nobody used plasterboard anymore but the name stuck.
Yes, but Drywall or Gypsum Wall Board are the most common names. Most contractors and people in consturction business just call it Drywall. If you want to sound like you know what you are talking about you should say Drywall.
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