Check, coat and reinforce fibre cement substrate to form a Proprietary Plaster Cladding System on site

Transcription

1 Page 1 of 5 Check, coat and reinforce fibre cement substrate to form a Proprietary Plaster Cladding System on site Level 3 Credits 20 Purpose People credited with this unit standard are able to: check fibre cement substrate on site is fit for purpose to have a proprietary plaster system applied; describe remedial work as required to allow the proprietary plaster coating of the fibre cement substrate; mask and protect the adjoining surfaces to fibre cement substrate; prepare and complete the surface, joinery, junctions, transitions, and penetrations in the fibre cement substrate; mix and condition base coat plaster and describe specific storage conditions; apply base coat plaster; and apply plaster and reinforcing mesh and determine curing and protection Subfield Domain Status Construction Trades Proprietary Plaster Cladding Systems Registered Status date 26 January 2007 Date version published 26 January 2007 Planned review date 31 December 2011 Entry information Accreditation Standard setting body (SSB) Open. Evaluation of documentation and visit by NZQA and industry. Building and Construction Industry Training Organisation Accreditation and Moderation Action Plan (AMAP) reference 0048 This AMAP can be accessed at

2 Page 2 of 5 Special notes 1 Definitions Fibre cement substrate refers to the fibre cement board or sheet that has in this instance been verified as suitable for the application of a Proprietary Plaster Cladding System. On site refers to a wide range of building and construction environments within which the Proprietary Plaster Cladding Systems trade skills are applied. Specifications refers to documented instructions (oral, written, graphic) and may include any of the following: manufacturer s specifications, recommendations or technical data sheets; material specifications; specifications from a specialist source such as an architect, designer, engineer or a supervisor; site or work specific 2 Legislation, regulations, codes and standards relevant to this unit standard include: Health and Safety in Employment Act 1992; Health and Safety in Employment Regulations 1995; Resource Management Act 1991; Hazardous Substances and New Organisms Act 1996; Building Act 2004; New Zealand Standards, NZS 4218:2004 Energy efficiency Small building envelope and NZS 3604:1999 Timber Framed Buildings, available from Statistics NZ ( New Zealand Building Code; Territorial Authorities building regulations. 3 Credit for this unit standard indicates compliance with industry practice. Industry practice refers to the ability to demonstrate knowledge and skills that reflect the productivity, uniformity, finish quality and material economies currently accepted within industry. Elements and performance criteria Element 1 Check fibre cement substrate on site is fit for purpose to have a proprietary plaster system applied. 1.1 Substrate condition is checked on site as being suitable for plastering and reinforcing in accordance with the manufacturer s specifications. clean, dry, dust free, flat, thickness, neatly fitting. 1.2 Construction details are checked for compliance with the manufacturer s specifications and working drawings. fixings, penetrations, flashings, control joints, interstorey joints, cavity details, ground clearance, fascia clearance. Element 2

3 Page 3 of 5 Describe remedial work as required to allow the proprietary plaster coating of the fibre cement substrate. 2.1 Actions required, in the event that the proprietary plaster coating of the fibre cement substrate cannot be undertaken in accordance with working drawings, specifications and manufacturer s instructions, are described. three of builder, designer, developer, owner, supplier, manufacturer, subcontractor. Element 3 Mask and protect the adjoining surfaces to fibre cement substrate. 3.1 Masking products are identified and their application and purpose are described in terms of meeting the job PVC tape, paper tape, cloth tape, masking paper, plastic sheet, tape primer. 3.2 Types of masking equipment are identified and their uses are described in terms of meeting the job masking machines, tape dispensers. 3.3 Adjoining surfaces are masked in accordance with manufacturer s specifications and work by other trades is protected, in accordance with the job Element 4 Prepare and complete the surface, joinery, junctions, transitions, and penetrations in the fibre cement substrate. 4.1 The placement and fixing of screed guides, PVC or Stainless Steel beads, and proprietary flashings are determined and completed in accordance with plaster manufacturer s specifications and job six of screed guides, base beads, angle beads, construction beads, joinery beads and flashings, parapet flashings, saddle flashings, control joints.

4 Page 4 of The surface preparation of the guides, beads and flashings is determined and completed in accordance with the plaster manufacturer s specifications and job cleaning, priming, stopping. 4.3 The preparation of the fibre cement surface is determined and completed in accordance with fibre cement manufacturer s specifications and job three of dryness, cleanliness, flatness, thickness, neatly fitting. 4.4 The placement, size, and quality of flexible bead sealant is determined and applied in accordance with both the sealant and plaster manufacturers specifications and job Element 5 Mix and condition base coat plaster and describe specific storage conditions. 5.1 The measuring and mixing of selected proprietary plasters are described and completed in accordance with the plaster manufacturer s specifications and job six of mixing instructions, weights, volumes, suitable container, drill mixers, plaster mixers, water content, personal protection, proprietary additives. 5.2 The storage and care of mixed plaster are described in accordance with the manufacturers specifications. pot life, retempering, temperature, disposal. Element 6 Apply base coat plaster. 6.1 Base coat plaster is applied to the fibre cement surface according to the plaster manufacturer s specifications and job three of hawke, trowel, plaster pump, straight edge, spatula, hopper gun, broad knife. 6.2 Set base coat plaster is cut back to achieve a level plane surface free of hollows and deviations. two of feathered straight edge, grid plane, plaster rasp, rule.

5 Page 5 of 5 Element 7 Apply plaster and reinforcing mesh and determine curing and protection 7.1 Reinforcing mesh coat plaster layer is applied to the base coat plaster in accordance with the plaster manufacturer s specifications and job four of hawke, trowel, hopper gun, plaster pump, spatula, broadknife. 7.2 Reinforcing mesh is selected, cut and placed in accordance with plaster manufacturer s specifications and job three of lapping, back wrapping, reveal reinforcing, corner opening reinforcing, stress point reinforcing. 7.3 Curing and protection requirements for plaster coatings are determined in accordance with the material used, time of application, plaster manufacturer s specifications, weather conditions, and the working environment. three of shade, moist cure, weather protection, overcoat times, temperature, protection from site damage. Please note Providers must be accredited by the Qualifications Authority, or an inter-institutional body with delegated authority for quality assurance, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment. Industry Training Organisations must be accredited by the Qualifications Authority before they can register credits from assessment against unit standards. Accredited providers and Industry Training Organisations assessing against unit standards must engage with the moderation system that applies to those standards. Accreditation requirements and an outline of the moderation system that applies to this standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The AMAP also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource Comments on this unit standard Please contact the Building and Construction Industry Training Organisation national.office@bcito.org.nz if you wish to suggest changes to the content of this unit standard.