A composite background in plastering refers to a surface made up of different​ (a)   materials, which requires special preparation before applying plaster. These backgrounds can include a combination of ​ (b)   , concrete, and timber, or other dissimilar materials. Since these surfaces have different rates of ​ (c)   and movement, they can cause cracking if not properly treated. To ensure a stable plaster finish, a ​ (d)   material such as metal lathing or a bonding agent is often used to create a uniform surface.​ This helps to improve ​ (e)   .

What is the type of internal plastering that could involve a backing plaster applied to a solid background?

​ (a)   ​ (b)  

Which Thistle product is suitable for medium to high suction backgrounds?

Which product provides a smooth, inert, high-quality surface to internal plasterboard walls and ceilings?