Page 1 of 4
Title / Demonstrate knowledge of roof membrane
Level / 2 / Credits / 6
Purpose / People credited with this unit standard are able to demonstrate knowledge of: roof membrane; equipment used in roof membrane installation; regulations and important information sources that apply to roof membrane projects; and roof membrane project organisation and installation considerations.
Classification / Plumbing, Gasfitting and Drainlaying > Roofing
Available grade / Achieved
Explanatory notes
1Legislation relevant to this unit standard includes but is not limited to – Health and Safety in Employment Act 1992, Building Act 2004.
2The 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.
3The New Zealand Building Code (NZBC) is a schedule to the Building Regulations 1992. 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.
4This unit standard applies to sheet roof membrane composed of rubber such as Ethylene Propylene Diene Monomer (EPDM) that usually 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 unit standards are available.
5Definitions
Alternative solution – a building design solution that differs totally or partially from those contained in the Acceptable Solutions, but still meets the performance requirements of the Building Code. It can be a minor variation from a Compliance Document, or a radically different design and construction approach.
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.
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
6This unit standard may be assessed against off-job.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of roof membrane.
Evidence requirements
1.1Roofing terms relevant to roof membrane are identified in accordance with industry use.
Rangeat least five terms.
1.2Attributes of roof membrane as a roofing system are identified in terms of durability.
1.3Substrate types suitable for roof membrane are identified in terms of the substrate’s adhesive attributes.
1.4The importance of ensuring substrate is prepared and installed to manufacturer recommendations is identified.
1.5Roof configuration types suitable for roof membrane installation are identified in accordance with industry use.
1.6Roof slope suitable for roof membrane application is identified in accordance with the NZBC.
Rangeincludes but is not limited to – fall, lowest point of profile.
1.7System materials used on roof membrane installations are identified in accordance with job specifications and manufacturer recommendations.
Rangemay be simulated.
Outcome 2
Demonstrate knowledge of equipment used in roof membrane installation.
Evidence requirements
2.1Equipment and tools used for installing roof membrane are identified in accordance with industry use.
Outcome 3
Demonstrate knowledge of regulations and important information sources that apply to roof membrane projects.
Evidence requirements
3.1The purpose of material safety data sheets (MSDS) is described in terms of product information and fire risk.
3.2The function of the NZBC and associated regulations is identified in relation to roof membrane projects.
3.3The purpose of an alternative solution is identified in relation to the NZBC.
3.4The primary purpose of notifiable work is identified compared to non-notifiable work.
Outcome 4
Demonstrate knowledge of roof membrane project organisation.
Evidence requirements
4.1The function of a work schedule is described in terms of controlling the work.
4.2The function of a job sheet is described in terms of defining the work.
4.3Weather considerations are identified in terms of planning the work.
4.4The roles and responsibilities of project people are described in accordance with company requirements.
Rangemay be for a simulated scenario;
project people may include but are not limited to – site supervisor, foreperson, architect, installation gangs, owner.
Outcome 5
Demonstrate knowledge of roof membrane installation considerations.
Evidence requirements
5.1Substrate preparation requirements are identified in accordance with manufacturer recommendations.
5.2Membrane preparation requirements are identified in accordance with manufacturer recommendations.
5.3Membrane marking, cutting, rolling, and sweeping processes are described in accordance with industry use.
5.4Use of tape on substrate and membrane is described in accordance with manufacturer recommendations.
5.5Use of adhesive is described in accordance with manufacturer recommendations.
5.6Weather considerations are identified in terms of effect of weather on solvents.
Replacement information / This unit standard and unit standards 25292 and 25295 were replaced by unit standard 30016.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 AssessmentRegistration / 1 / 23 January 2009 / 31 December 2020
Review / 2 / 16 March 2017 / 31 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.
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.
The Skills OrganisationSSB Code 100401 / New Zealand Qualifications Authority 2018 / / New Zealand Qualifications Aut