25300 version 1
Page 1 of 3
Explain roof shingle installation, re-roofing considerations, and
potential problems
Level
4
Credits
6
Purpose
People credited with this unit standard are able to explain: flashing and
penetration installation on roof shingles; planning and checks required prior
to re-roofing; and the re-roofing procedure for 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.
 New Zealand Qualifications Authority 2016
25300 version 1
Page 2 of 3
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
Industry practice – sound industry practice that meets legislative requirements.
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.
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; 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.
Territorial authorities – city and district councils.
5
This unit standard may be assessed against off-job.
Elements and performance criteria
Element 1
Explain flashing and penetration installation on roof shingles.
Range
flashing types – chimney, skylight, soakers, wall to roof, ridges, vents.
Performance criteria
1.1
Installation of flashings and penetrations is explained in accordance with
industry practice and the NZBC.
Element 2
Explain the planning and checks required prior to re-roofing.
Performance criteria
2.1
Existing roof inspection activities are explained in terms of determining the
condition and potential hazards prior to installing the new roof in accordance
with industry practice and site procedures.
2.2
Site check activities are explained in accordance with site procedures.
Range
preparing the site, health and safety checks and signs, site
hazards.
 New Zealand Qualifications Authority 2016
25300 version 1
Page 3 of 3
2.3
Work planning sequence is explained in terms of minimising impact to
occupants and potential risks of exposure damage to house.
2.4
Disposal planning is explained for the removed roofing in accordance with site
procedures.
2.5
NZBC compliance for re-roofing is described in accordance with territorial
authority requirements.
Element 3
Explain the re-roofing procedure for roof shingles.
Performance criteria
3.1
Process of removing existing fixings and shingles is explained in accordance
with industry practice.
3.2
Storage and handling of existing and new shingles is explained in accordance
with industry practice and manufacturer recommendations.
3.3
Substrate checks and potential remedial actions to achieve a sound base to
install new shingles on are explained in accordance with industry practice and
manufacturer recommendations.
3.4
Overlay of existing shingle is explained in terms of advantages and
disadvantages compared to re-roofing.
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