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Blueboard is a type of plasterboard or drywall that is placed in the external walls of a building as cladding material. It is 7.5 mm thick, solid and sturdy and has historically been used to create a decorative rendering finish. Like other drywall, it comes in sheets made from gypsum, which is sandwiched between two sheets of paper.

Blueboard is generally considered better to use in walls than drywall as it is easier to work with. It gets its name from the paper covering it, which is blue coloured. This paper covering allows the render to stick to the surface. Blueboard is a popular choice when people are looking for a coloured or textured finish, and it often results in a higher-quality finish than other rendering options.

Advantages of Blueboard

  • Strong and sturdy
  • Lightweight
  • Quick to install
  • Easy to access
  • It can be rendered with acrylic
  • Approved by builders
  • Better than drywall
  • The final appearance is superior to other rendering options
  • Can paint directly over the blueboard
  • It does not need any priming
  • It can be either coloured or non-coloured
  • The blue-coloured paper prevents scratching and dents

Disadvantages of Blueboard

  • Not water resistant
  • More expensive overall
  • It still needs some kind of finish to hide any flaws or imperfections
  • Rendering Blueboard

Acrylic rendering is commonly used for blueboard and can be coloured or non-coloured. Another common method is the Three Stage Coloured Rendering application.

Tools Needed

The tools needed to render blueboard includes:

  • Trowel
  • Sponge
  • Tape
  • Bucket
  • Masking tape
  • Wheelbarrow
  • Paintbrushes
  • Clean water
  • Plastic float

Here are the steps for rendering blueboard:

  1. Apply the acrylic render in an upward direction with a steel trowel, going from left to right and ensuring that it is evenly applied
  2. Use the float to give the render a smooth finish.
  3. Let the first layer of the render dry.
  4. If you’re applying another layer of render, scour the first layer to ensure that it’s smooth and has set properly.
  5. Decide what finish you want.
  6. Let the render dry for up to 3 days to prevent it from cracking.

Another popular option for rendering the blueboard is using the Three Stage Coloured Render method, which includes:

  1. Applying acrylic render as a base coat
  2. Apply a primer
  3. Apply a coloured and/or textured acrylic rendering finish

To find out more about blueboard and blueboard rendering, please contact us at 0402 704 984 or visit our website:
At Sydney Cement Rendering, we take pride in being Sydney’s trusted rendering experts, and we provide our customers with the highest quality rendering services.