- 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.
General system overview:
- Patch Joints
- Polymer Render/Flexible render/Brand specific product options
- 2mm minimum decorative coating
- (protective coating optional)
- Important Points
- Interesting Point
- Rockcote System
- RSA (Render Systems Australia) System
- MAC (Melbourne Acrylic Coatings) System
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.