NZQA Expiring unit standard version 2 Page 1 of 5. Describe roof membrane preparation and installation procedures

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1 Page 1 of 5 Title Describe roof membrane preparation and installation procedures Level 3 Credits 10 Purpose People credited with this unit standard are able to describe: project planning activities; plywood substrate laying requirements; substrate and pre-installation preparation; safety procedures prior to installation; laying requirements; and the process of taping and flashing joints and penetrations for roof membrane installation. Classification Plumbing, Gasfitting and Drainlaying > Roofing Available grade Achieved Explanatory notes 1 Legislation relevant to this unit standard includes but is not limited to Health and Safety in Employment Act 1992, Building Act The following applicable document is available for download on the Department of Building and Housing website: Building Code compliance document Clause E2, containing Acceptable Solution E2/AS1 for External Moisture. 3 The New Zealand Building Code (NZBC) is a schedule to the Building Regulations It provides requirements for compliance with the Building Act 2004 when constructing a new building or altering an existing one. The Building Code sets out performance standards that building work must meet and covers aspects such as structural stability, fire safety, access, moisture control, durability, and services and facilities. 4 This unit standard applies to sheet roof membrane usually composed of rubber such as Ethylene Propylene Diene Monomer (EPDM) that is installed over plywood or concrete substrates on low slope roofs. This unit standard does not apply to liquid membrane or torch on membrane for which other standards are available. 5 Definitions Company requirements include the policy, procedures, and methodologies of the company. They include requirements documented in company and site health and safety plans, quality assurance documents, and contract work programmes. EPDM Ethylene Propylene Diene Monomer, a thermosetting synthetic rubber used as a resilient part of a sealing washer, or as a roof membrane. Industry use common use in the roofing industry. Job specifications refer to the documented information found in construction drawings, project specification documents, legislation, regulations and codes.

2 Page 2 of 5 Manufacturer recommendations refer to product information and product data sheets provided by the manufacturer of any given product. Notifiable work is as defined in A Guide to the Health and Safety in Employment Act 1992 (Wellington: Department of Labour, 2003); available at Site procedures refer to the procedures which are required to be observed for safe work practices at a particular site. 6 This unit standard may be assessed against off-job. Outcomes and evidence requirements Outcome 1 Describe project planning activities for roof membrane installation. 1.1 The function of plans and specifications is described in relation to a job sheet, material schedule, and work schedule. 1.2 A work schedule is prepared for a roof membrane job in accordance with job specifications. 1.3 Notifiable work activities and procedures relevant to rubber membrane roofing are identified and described in accordance with Department of Labour requirements. 1.4 Work area cordons, safety notices, and notification of work signs are described in accordance with site procedures. 1.5 The purpose of an initial site meeting is described in terms of job organisation. Outcome 2 Describe plywood substrate laying requirements for roof membrane installation. 2.1 Plywood substrate laying requirements are described in accordance with the NZBC. joins, grain, fixing. Outcome 3 Describe the substrate and pre-installation preparation for the installation of a roof membrane installation.

3 Page 3 of Plywood substrate checks are described in terms of ensuring readiness for rubber membrane in accordance with manufacturer recommendations and the NZBC. 3.2 Plywood substrate lap rebate routing is described in accordance with membrane manufacturer 3.3 Concrete substrate checks are described in terms of ensuring readiness for rubber membrane in accordance with manufacturer 3.4 Compressed cement board substrate checks are described in terms of ensuring readiness for rubber membrane in accordance with membrane manufacturer 3.5 Materials checks are described in accordance with company requirements. 3.6 Substrate joint taping is described in accordance with membrane manufacturer 3.7 Installation of substrate ventilation is described in accordance with membrane manufacturer 3.8 Potential substrate defects are described in terms of rectification to meet membrane manufacturer recommendations for substrate preparation. Outcome 4 Describe the safety procedures prior to roof membrane installation. 4.1 Dangerous goods and materials are identified, and procedures and checks for their management are described in accordance with relevant legislative requirements and site procedures. Outcome 5 Describe roof membrane laying requirements. 5.1 The function of substrate primer is described in accordance with manufacturer 5.2 Adhesive application procedure is described in accordance with manufacturer recommendations and company requirements. 5.3 Placement of the membrane is described in accordance with workplace practice and manufacturer

4 Page 4 of Lap bonding process is described in accordance with membrane manufacturer for roofs with >5 degree slope, for roofs with <5 degree slope. Outcome 6 Describe the process of taping and flashing roof membrane joints and penetrations. 6.1 External corner flashing details are described in accordance with the NZBC. 6.2 Pipe penetration flashing is described in accordance with the NZBC. new, existing pipes. 6.3 A membrane to concrete wall junction is described in accordance with the NZBC and membrane manufacturer 6.4 Membrane gutter details are described in accordance with the NZBC. Replacement information This unit standard and unit standards and were replaced by unit standards and This unit standard is expiring. Assessment against the standard must take place by the last date for assessment set out below. Status information and last date for assessment for superseded versions Process Version Date Last Date for Assessment Registration 1 23 January December 2020 Review 2 16 March December 2020 Consent and Moderation Requirements (CMR) reference 0227 This CMR can be accessed at Please note Providers must be granted consent to assess against standards (accredited) by NZQA, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment. Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards. Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards.

5 Page 5 of 5 Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMR). The CMR 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 requirements.