NZQA Expiring unit standard / 25298 version 2
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Title / Demonstrate knowledge of roof shingle systems
Level / 2 / Credits / 6
Purpose / People credited with this unit standard are able to identify: common roof parts and types; support framing for roof shingles; project people involved in the roofing industry; and specifications and regulations. They are also able todemonstrate knowledge of: roof shingle and shake types; underlay used in roof shingle installation; substrate and batten layout for roof shingles;fastenings used in roof shingle installation; and flashings used in roof shingle installation.
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.

4Definitions

Acceptable Solutions – step-by-step building methods that are approved as being compliant with the NZBC (for example, what insulation is needed to comply with energy efficiency requirements of the Building Code).

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.

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.

Shingles – is used in this unit standard as a term to include shakes; roof shingles are coverings designed to protect buildings by having individual elements overlapping each other. Shingles are made from materials such as asphalt, sawn wood, or composite materials; shakesare split from timber logs (instead of sawn) and reshaped by manufacturers, they are thicker at the butt end than timber shingles.

5This unit standard may be assessed against off-job.

Outcomes and evidence requirements

Outcome 1

Identify common roof parts and types.

Evidence requirements

1.1Common roof types are identified using industry terminology.

Rangeincludes but is not limited to – gable, dutch gable, four hip, straight gable, skillion, mansard, dutch barn.

1.2The parts that form a roof are identified using industry terminology.

Rangeincludes but is not limited to – dormer, eaves, fascia board, flashing, collar flashing, penetration, fascia gutter, ridging, ridge cap, flat roof, gable, hip, hip end, ridge, soffit, valley, down pipe, chimney penetration.

1.3Roof pitch is described in relation to identified roof parts and types.

Outcome 2

Identify support framing for roof shingles.

Evidence requirements

2.1Structural components used for the roof support framework are identified using industry terminology.

Rangepurlins, rafters, valley, fascia, portal frames, trusses, battens, substrate.

Outcome 3

Demonstrate knowledge of roof shingle and shake types.

Evidence requirements

3.1Shingle and shake types are described in terms of material, use, appearance, and durability.

Rangeasphalt, laminated, tab, wooden species, slate, composite.

3.2Shingle terms are identified in accordance with industry use.

Rangeside lap, head lap, butt end, course of shingles, cutout.

3.3Suitability of shingle types for installation is identified according to roof pitch.

Outcome 4

Demonstrate knowledge of underlay used in roof shingle installation.

Evidence requirements

4.1The purpose and placement of underlays is identified in terms of their function in the roofing system.

4.2The types of underlay used most commonly in roof shingle installation are identified.

Outcome 5

Demonstrate knowledge of substrate and batten layout for roof shingles.

Evidence requirements

5.1Substrate sheet layout and attachment is identified in accordance with industry use.

5.2Batten layout and attachment is identified in accordance with industry use.

Outcome 6

Demonstrate knowledge of fastenings used in roof shingle installation.

Evidence requirements

6.1Types of fastenings used are identified in accordance with job specifications.

Rangenail, staple, adhesive.

6.2Options for fastening materials are identified according to fastening type and use.

6.3Nail head types on nails that attach shingles and shakes are identified in accordance with industry use.

Rangeevidence is required for three types.

Outcome 7

Demonstrate knowledge of flashings used in roof shingle installation.

Evidence requirements

7.1Purpose of flashings is identified in accordance with job specifications and the NZBC.

7.2Flashing types suitable for use on roof shingles are identified in accordance with NZBC Acceptable Solution E2/AS1.

Rangemetal, rubber membrane.

7.3Two examples of areas where specialist flashings may be required are identified in accordance with job specifications.

Outcome 8

Identify project people involved in the roofing industry.

Evidence requirements

8.1The 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 9

Identify specifications and regulations relevant to roof shingle installation.

Evidence requirements

9.1Manufacturer information that specifies roof shingle installation is identified.

9.2The regulations affecting the use of shingles are identified in accordance with the NZBC.

RangeAcceptable Solutions, alternative solutions, local council regulations.

Replacement information / This unit standard was replaced by unit standard 30024.

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 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 Organisation
SSB Code 100401 / New Zealand Qualifications Authority 2019 / / New Zealand Qualifications Aut