BS 8481:2006 pdf download

BS 8481:2006 pdf download.Design, preparation and application of internal gypsum, cement, cementand lime plastering systems - Specification.

3.2.3 plastering system
plaster coat or sequence of plaster coat.s applied to a background, including the possible use of a support and/or rc’inforcernen and/or pre-treatment
3.2.4 one-coat plaster
applied in one-coal which fulfils all the functions of detering system
3.2.5 multi-coat plaster
plaster system using a sequence of plaster coats to achieve the required thickness when all operations are completed after the plaster has set but not (II)
3.2.6 undercoat
lower plaster coat or plaster coats of a plastering system
3.2.7 flnal coat
last plaster coat of a multi-coat pbstenng system
3.2.8 dubbing out
process of filling large kwalized irregiilaj-ilies in the background, such as hollows, prior to the application of an undercoat
3.3 Background definitIons
3.3.1 background
surface of a eonstniction element to which a plastering system is to be applied
3.3.2 key
rougluiess of a surface which enables plaster to make a bond
3.3.3 sUpport
product attached to the background to which a plaster is applied so that the plastering cystein is largely Independent of the background (e.g. lathing)
3.3.4 reinforcement
material incorporated within a plaster coat to improve resistance to cracking (e.g. mesh)
3.3.5 bonding agent
propnetary material used to provide adhesion of the plastering system to the background where necessaly
3.3.6 spatterdash and stipple pre-treatmenis to prepare a background for plastering.
3.4 Other definitions
3.4.1 efflorescence
formation of crystals on a surface during drying caused by the presence of soluble salts.