What is plasterboarding?
Plasterboarding comprises a gypsum plaster layer between two thick sheets of specialised paper. It's sold in large sheets and is extremely heavy. It can be nailed or screwed into place with special fixings that are hammered into the surface before nailing, or it has slots that allow bolts to pass through its holes for fixing, depending on where it will be used.
Plasterboard comes in standard sizes of 2400mm x 1200mm and is usually laid with the fibrous side facing inward to protect it from the elements. The sheets are generally joined together using special adhesives leaving no signs that there was ever a join, once dry.
Why Use It?
It's extremely strong and can be used to build a wide variety of structures.
It's impervious to water, making it an excellent choice for constructing things like attics or walls that will be exposed to rain or other wet conditions for extended periods.
Is there a difference between dry lining and plasterboard?
Plasterboarding or plasterboard is dry lining. Dry-lining is the term commonly used to refer to using plasterboard for wall and ceiling panels.
What do you do after plasterboarding?
Once you've finished plasterboarding, it's important to use a special tool called a jointing iron. This is similar in appearance to a long-handled shoehorn and is used to scrape the joints between panels of dry lining smooth. If these aren't jointed correctly they can leave unsightly bumps in the final wall and ceiling finish.
Can you paint straight over plasterboard?
Yes, you can paint over plasterboard, so long as it's been properly applied and is in a suitable condition. This would mean the wall has been plastered smooth to an even depth and thickness with all joints filled without any bumps or lumps.
What are the benefits of plasterboarding?
Plasterboarding is a very versatile product. The advantages of plasterboard include:
• It's lightweight and easy to handle, which makes installation quicker and easier.
• When installed correctly it evens out the surface, making it ideal for use in a kitchen due to its resistance to heat and moisture.
• Plastered walls take paint or wallpapers well and can be decorated to suit most tastes.
• It's relatively less expensive compared to other building materials like timber.
What are the disadvantages of plasterboarding?
• The plasterboard surface can deteriorate if not properly maintained.
• Plasterboard is easily damaged by sharp objects or fire, which may reduce its lifespan.
What should I consider when choosing plasterboard?
There are basically two types of plasterboard: blue (for interior walls) and green (for exterior walls). They only come in one thickness – 25mm.
Blue boards are also known as dry lining boards, and green boards as wet lining boards, because they have a paper coating that is treated with moisture-resistant chemicals to protect it from damp. They come in standard sizes of 1220 x 2400mm (4ft x 8ft) and can be cut down to fit.
As Green boards are not pre-treated with chemicals they should be primed before being used. This involves using a lime washing solution. The board is thoroughly soaked in the solution, which penetrates to the core of the plasterboard forming a water-repellent barrier between it and any wet or damp surfaces behind it.