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Backing is the substrate or surface that the first coat of render is applied to.
The base coat is the first layer of material applied to a surface.
A bead is a continual strip of material or trim made from PVCu, metal or wood and used in wall or surface finishing processes such as rendering and plastering.
Continuous strips of material or trims made from PVCu, metal or wood and used in wall or surface finishing processes such as rendering and plastering.
Bedding describes the pressing a of bead into an adhesive mortar or plaster.
A bellcast is a thickening concave layer of render that is wider at the bottom than at the top like the profile found at the base of a bell. Usually created at the base of a wall above the damp-proof course or above windows to deflect water away from the surface it is applied to.
A bellcast bead is a bead with a sloping profile that assists the forming of concave bellcasts. Using a bellcast bead is a quick to apply process that gives uniformity and reinforcement to the bellcast on an external wall.
Bond: the joining two or more surfaces or materials together.
Bonding material is material that is used to join two or more surfaces or materials together.
Bridging is the connection from one surface to another. An example of bridging is the insertion of a mechanical fixing through a bead and into a substrate. Although the substrate and any any material placed over the bead are seperated by the bead, the two items are connected by the bridging created by the mechanical fixing.
Build up describes the adding of one layer on top of another to create a consistant level surface. On uneven blockwork you may build up a render base coat so that the rendered finish is smooth and flat.
A butt joint is where one bead is butted up against another. For example where a corner bead meets a bellcast bead at the base of an external wall. Note: Butt joints should always be sealed using something like PVC Pipe Weld.