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Describe roof shingle preparation and installation procedures
Level
3
Credits
12
Purpose
People credited with this unit standard are able to: describe the planning and
checks required prior to installing roof shingles; demonstrate knowledge of
material calculations; describe the process of installing and checking a roof
shingle substrate and battens; describe the process of installing asphalt roof
shingles, wooden shingles, and slate shingles; and describe the installation
considerations for flashings on roof shingles.
Subfield
Plumbing, Gasfitting and Drainlaying
Domain
Roofing
Status
Registered
Status date
23 January 2009
Date version published
23 January 2009
Planned review date
31 December 2013
Entry information
Open.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
The Skills Organisation
Accreditation and Moderation Action Plan (AMAP) reference
0227
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
Legislation relevant to this unit standard includes but is not limited to – Health and
Safety in Employment Act 1992, Building Act 2004.
2
The following applicable document is available for download on the Department of
Building and Housing website: http://www.dbh.govt.nz/
– Building Code compliance document Clause E2, containing Acceptable Solution
E2/AS1 for External Moisture.
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3
The 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.
4
Definitions
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
http://www.osh.govt.nz/order/catalogue.
Shingles – is used as 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; shakes are split from timber logs (instead of sawn) and
reshaped by manufacturers, they are thicker at the butt end than timber shingles.
Site procedures – refer to the procedures which are required to be observed for safe
work practices at a particular site.
5
This unit standard may be assessed against off-job.
Elements and performance criteria
Element 1
Describe the planning and checks required prior to installing roof shingles.
Performance criteria
1.1
The function of plans and specifications is described in relation to a job sheet,
material schedule, and work schedule.
1.2
Site check activities are described in accordance with common job
specifications.
Range
preparing the site, health and safety checks and signs, site
hazards.
1.3
Notifiable work activities and procedures relevant to roof shingles are identified
and described in accordance with Department of Labour requirements.
1.4
Roof framing checks that are used to verify the builder’s work prior to
commencing roof installation are described.
1.5
On-site storage of shingles is described in accordance with site procedures.
1.6
The purpose of an initial site meeting is described in terms of job organisation.
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25299 version 1
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Element 2
Demonstrate knowledge of material calculations.
Performance criteria
2.1
Methods of calculation are described in accordance with job specifications.
Range
roof area from plans, shingle area, underlay area, substrate area.
Element 3
Describe the process of installing and checking a roof shingle substrate and battens.
Performance criteria
3.1
Description includes identifying the substrate sheet pattern, fixing, and
expansion gaps.
3.2
Description includes identifying potential defects in substrate and battens.
3.3
Description includes checking the structure for conformity with the NZBC.
3.4
Description includes the laying of underlay and membrane, where required, in
accordance with manufacturer recommendations.
Element 4
Describe the process of installing asphalt roof shingles.
Performance criteria
4.1
Description includes the mark out of the plywood substrate in accordance with
the shingle manufacturer recommendations.
4.2
Description includes identifying the effects of asphalt shingle temperature on
shingle installation.
4.3
Description includes the laying procedure in accordance with job specifications.
Range
4.4
initial course, ridges, hip cappings.
Description includes forming valleys in accordance with job specifications.
Range
open valley, closed valley.
4.5
Description includes identification and installation of flashings for an asphalt
shingle roof.
4.6
Description includes the use of asphalt roof cement to seal shingles down in
accordance with manufacturer recommendations.
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Element 5
Describe the process of installing wooden shingles.
Performance criteria
5.1
Description includes laying details for the starter course and subsequent
courses in accordance with manufacturer recommendations.
5.2
Description includes the laying procedure options for timber ridges and hip
cappings in accordance with job specifications.
5.3
Description includes the laying procedure for valleys in accordance with job
specifications.
5.4
Description includes identification and installation of flashings for a wooden
shingle roof.
Element 6
Describe the process of installing slate shingles.
Performance criteria
6.1
Description includes laying details for the starter course and subsequent
courses in accordance with manufacturer recommendations.
6.2
Description includes the laying of slate ridges and hip flashings in accordance
with job specifications.
6.3
Description includes the forming of slate valleys in accordance with job
specifications.
6.4
Description includes identification and installation of flashings for a slate shingle
roof in accordance with job specifications.
Element 7
Describe the installation considerations for flashings on roof shingles.
Performance criteria
7.1
Description includes identification of examples of penetrations in accordance
with the NZBC.
7.2
Description includes lap allowances and fixings for flashings in accordance with
job specifications.
7.3
Description includes sealant application to seal flashing joints in accordance
with job specifications.
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Please note
Providers must be accredited by NZQA, 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 NZQA 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 requirements.
Comments on this unit standard
Please contact The Skills Organisation info@skills.org.nz if you wish to suggest changes
to the content of this unit standard.
 New Zealand Qualifications Authority 2016