NZQA registered unit standard 28772 version 1
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Title Glaze with structural silicone
Level
Purpose
4 Credits 5
This unit standard is for experienced people working in the glazing industry.
People credited with this unit standard are able to: demonstrate knowledge of structural silicone glazing; clean and prepare substrates for glazing with structural silicone; glaze and apply sealant; and complete glazing with structural silicone.
Classification
Available grade
Glass and Glazing > Flat Glass
Achieved
Explanatory notes
1 Definition
Worksite requirements – refer to instructions to staff on policy and procedures which are documented in memo or manual format and are available in the workplace.
These requirements include – company specifications and procedures, work instructions, manufacturer’s specifications, product quality specifications, legislative requirements.
2 Legislation and standards relevant to this unit standard include
– Building Act 2004,
Health and Safety in Employment Act 1992, New Zealand Standard (NZS)
4223.3:1999 Glazing in buildings – Human impact safety requirements, available at http://www.standards.co.nz
.
3 Range
This unit standard applies to glazing glass to glass, and glass to metal.
Outcome 1
Demonstrate knowledge of structural silicone glazing.
Evidence requirements
1.1 Methods used to glaze with structural silicone glazing are identified and described in terms of their advantages and disadvantages.
1.2 Process for cleaning and preparing substrates prior to glazing is identified and described in terms of worksite requirements.

New Zealand Qualifications Authority 2020 Building and Construction Industry Training
Organisation
SSB Code 101562

NZQA registered unit standard 28772 version 1
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Range process includes – remove oil, grease and soluble salts; remove traces of cleaning agents; protect surfaces from contamination.
1.3 Process for priming substrates prior to glazing is identified and described in terms of worksite requirements.
Range process includes – selection of primer, primer application.
1.4 Process for applying sealant is described in terms of worksite requirements.
Range process includes – fix glass securely, apply masking tape, seal voids, tool sealant into joints, remove masking tape and any spills, check sealant is cured.
1.5 Process for testing structural silicone glazing is described in terms of worksite requirements.
Range
Outcome 2 process includes – weatherproofing, adhesion failure.
Clean and prepare substrates for glazing with structural silicone.
Evidence requirements
2.1 Materials and equipment are checked against the job specifications in accordance with worksite requirements.
2.2 Any oil, grease and soluble salts are removed from substrates using agents compatible with substrate finish in accordance with worksite requirements.
2.3 Any traces of cleaning agents are removed from substrate surfaces in accordance with worksite requirements.
2.4 Surfaces are protected from contamination after cleaning and prior to application of sealant in accordance with worksite requirements.
2.5 Substrates are primed, where required, in accordance with worksite requirements.
Range primed includes – primer is applied only to those areas which can be sealed within the same working day to avoid contamination after priming and prior to sealant application.
2.6 Sealant suitable for the application is selected in accordance with worksite requirements.
2.7 Preparation is completed without injury to personnel or damage to products and equipment in accordance with the job specifications and worksite requirements.
Outcome 3

New Zealand Qualifications Authority 2020 Building and Construction Industry Training
Organisation
SSB Code 101562

NZQA registered unit standard 28772 version 1
Page 3 of 4
Glaze and apply sealant.
Evidence requirements
3.1 Glass is securely fixed to minimise movement and checked for re-contamination prior to sealant application in accordance with worksite requirements.
3.2 Primed surfaces are touch dry, masking tape is applied and all voids, gaps or joints are sealed in accordance with worksite requirements.
3.3 Sealant is tooled into voids, gaps or joints in accordance with worksite requirements.
3.4 Masking tape and any spills are removed without damage to, or contamination of, surfaces in accordance with worksite requirements.
3.5 Sealant is fully cured prior to movement of the frame or panel in accordance with worksite requirements.
3.6 Glazing is completed without injury to personnel or damage to products and equipment in accordance with the job specifications and worksite requirements.
Outcome 4
Complete glazing with structural silicone.
Evidence requirements
4.1 Glazed frames or panels are weatherproofed, cleaned, and made free from residue in accordance with worksite requirements.
4.2 Operations are completed without injury to personnel or damage to products and equipment in accordance with the job specifications and worksite requirements.
4.3 Structural silicone glazing is tested for adhesion failure in accordance with worksite requirements.
4.4 Customer is advised of any relevant maintenance requirements in accordance with worksite requirements.
Replacement information This unit standard replaced unit standard 2045 and unit standard 26033.
Planned review date 31 December 2020
Building and Construction Industry Training
Organisation
SSB Code 101562

New Zealand Qualifications Authority 2020

NZQA registered unit standard 28772 version 1
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Status information and last date for assessment for superseded versions
Process Version Date Last Date for Assessment
Registration 1 18 June 2015 N/A
Consent and Moderation Requirements (CMR) reference 0048
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do
.
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.
Comments on this unit standard
Please contact the Building and Construction Industry Training Organisation info@bcito.org.nz
if you wish to suggest changes to the content of this unit standard.
Building and Construction Industry Training
Organisation
SSB Code 101562

New Zealand Qualifications Authority 2020