FC Sheet/Blueboard

General system overview:

  1. Patch Joints
  2. Polymer Render/Flexible render/Brand specific product options
  3. 2mm minimum decorative coating
  4. (protective coating optional)
  • A decorative coating is not a substrate straighter.
  • The budget and choice of level of finish goes hand-in-hand with the expectation of joint concealment in sidelight.
  • The rigid nature of the substrate means that imperfections may be exposed when subjected to sidelight.
  • The most common mistake on blueboard is to neglect to install the right number of expansion joints.  Please refer to manufacturer guidelines.
  • It is important to use the correct flexible products over this substrate.

The use of cement-based joint patching products can reduce the effects of peaking joints.  Cement based products have traditionally been avoided over the cementious FC Sheeting/Blueboard substrates due to rigidity of the surface and vulnerability on normal structural movement/settlement.  The principle of these patching products is that, when installed correctly by a qualified and experienced tradesperson the reinforced fibreglass mesh bedded into the joint with the patch (at a correct width) can restrict minor cracking due to movement/settlement to the grid of the mesh.  The essential flexible top coat texture (& optional paint) will then assist in bridging minor lines.

Rockcote System Specification

Method Statement – Over FC Sheeting
RSA Acrylic SysSpec – Blueboard Sheeting Jan 2015
RSA Bling SysSpec – FC Sheeting Blueboard Dec 2014

MAC FC Sheeting System Specification