![]() Corner ToolĪ tool consisting of a right angle (90°) metal form with a handle used for application of plaster and finishing of interior angles. Reinforcement material used at re-entrant or interior angles to provide continuity between two intersecting plaster surfaces. ConsistencyĪ term denoting the fluidity or viscosity of a plaster or cementitious paste also refers to the amount of water required to bring a given quantity of dry cementitious material and aggregate to a given fluidity. Coloured FinishĪ plaster finish coat containing integrally mixed color pigments or coloured aggregates. This method is used where termination of a plaster application at an edge, angle, control joint or bead is impractical. The second application is brought up to the line of set material and finished to provide a smooth continuous surface. The first application (set, but not dry) is terminated at a sharp line using the trowel edge. The line at which, or the method by which, two separate plaster applications are jointed to provide a continuous plane surface. CoatĪ thickness or layer of plaster applied in a single operation. Variously defined as plaster containing Portland cement. Bull NoseĪ special formed rounded external angle with a radius of 12.5 mm (½”) or more. The visual darkening of a plaster surface which indicates the completed setting (hydration) of the plaster. A bond can be achieved through adhesion (a liquid that sticks things together as it hardens) or key (the roughness of a surface which allows something to stick to it). The connection between two surfaces – the way something ‘sticks’ to something else. Bonding AgentĪ material applied to a surface to improve the quality of bond between it and succeeding plaster application. Generally a term used to refer to the relative stiffness or resistance to movement under the trowel. BodyĪ subjective and often misused term relating to the working properties of a plastic cementitious mass such as gypsum or Cement plaster ![]() BleedingĪ condition characterized by bulging of the finish coat layer as it separates and draws away from the basecoat. BasecoatĪny plaster coat applied to a substrate prior to application of the finish coat of plaster. ![]() Relating to or containing an alkali having a pH greater than 7. AdmixtureĪny substance added to a plaster component or plaster mortar for the purpose of modifying its properties. A material that shortens the setting time of gypsum plasters and other cementitious materials. ![]()
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