BS 8481:2006 pdf free.Design, preparation andapplication of internalgypsum, cement, cementand lime plastering systems – Specification.
BS 8481 This British Standard specifies the design, preparation and applicationof plaster based on gypsum, cement,cement and lime, for internalplastering on all types of background used under normal conditions. Itincludes plastering onto both new and old backgrounds and the maintenance and repair of existing work. It concerns materials,backgrounds, preparation of the surface to be plastered, choice ofsuitable gypsum, cement, cement and lime plastering systems, methodsof application and inspection and testing of plastering.
Recommendations on gypsum, cement,cement and lime plasteringmixes with special properties intended to enhance thermal insulation,fire resistance, acoustic insulation and to increase radiation absorptionmaintenance and repair are also covered.
NOTERelevant data are summarized in a series of tables.
This standard should be read in conjunction with BS EN 13914-2especially regarding surface, requirements, flatness, verticality, angularity, types of finish and smoothness which are not dealt with inthis standard.
The following referenced documents are indispensable for the application of this document. For dated references, only the editioncited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
Brickwork and blockwork if constructed to a close enough tolerance,allows single or multi-coat work depending upon the tolerance of thebackground and the thickness of the coats applied. If brickwork andblockwork is erected in accordance with the recommendations ofDD ENV 1996-2, they might not have sufficiently true and vertical
surfaces to allow the use of a thin one-coat plaster or a single undercoat.In-situ concrete and some specially made units and constructed wallshaving a sufficiently true and vertical surface and uniform suction mightbe switable for single-coat work. The thickness of plaster applied to a solid soffit should be kept to apractical minimum to avoid the risk of detachment (see also 6.7.3 andTable 2 and Table 3).
lt shall be ascertained that the background has adequate strength withsufficient load bearing capacity and be sufficiently resistant to deformation.BS 8481 pdf download.