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Frequently asked question

How to install our plasterboard products correctly

General installation guidance around using our plasterboard products effectively covering the following topics below:

  1. How to install Gyproc plasterboard?
  2. Which way up should I install plasterboards?
  3. How thick should dot and dab be?
  4. Can I form an opening in Gyproc plasterboard?


How do I install Gyproc plasterboard?

Installing Gyproc is similar to installing other types of plasterboard. You will need to carry out the following steps.
  1. Mark the ceiling and floor to show the thickness of the board and adhesive. Also mark where the centre of each board will be.
  2. Cut the plasterboard to the required dimensions.
  3. Apply the plasterboard adhesive in a continuous band around the edges of the wall, ceiling, and any services or openings.
  4. Dab the adhesive onto the wall, behind where the board will sit. Also apply a band of adhesive at skirting level.
  5. Place the reverse side of the board against the dabs, and tap it into alignment with the marks you made at the beginning.
  6. Raise the board until it’s tight against the ceiling, then wedge it into place until the adhesive is fully set.

This is just a brief overview of the installation process. For more information, please see our detailed installation guides for the Gyproc plasterboard range. 

You may also find our wall lining system best practice guides helpful.


Which way up should I install plasterboards?

When installing a single layer of Gyproc plasterboard, it’s best to hang boards vertically. This is standard practice in the industry, and complies with BS 8212.

We don’t recommend installing boards horizontally as this affects lateral stability performance. It also means that the boards will fall short of the maximum recommended height for the system.

Gyproc and Glasroc boards are fixed horizontally in curved partition and wall lining systems. In this case, the reduced stiffness of the system is countered by decreasing the stud centres from 600mm to 300mm.

For more information, please see our detailed plasterboard installation guides.


How thick should dot and dab be?

When dotting and dabbing, mix your plasterboard adhesive to a thick consistency. After you have applied adhesive along the edges of the wall, ceiling, and any services or openings, you can apply the dabs.

Your dabs should be around 10mm thick, and 50mm to 75mm wide. They should also be about 250mm long, the length of a trowel. Create three vertical rows of dabs for each board, with one in the middle and two at least 25mm from the edge.

Find out more about dotting and dabbing in our detailed blog post.


Can I form an opening in Gyproc plasterboard?

You can form an opening in Gyproc plasterboard, although there are limits. When forming openings within partitions, you’ll need to keep acoustic performance in mind. For this reason, it’s a good idea to consult window and door manufacturers for advice on whether your chosen products will achieve the performance you require.

You should also make sure that door and window frame detailing is the correct thickness for your partition.

Download the GypWall Classic section of our White Book for more information and examples of how to form openings.  If these don’t help, give us a call on 0115 945 6123 for more detailed advice.