Compliance Statement
Scope of Use
Metroglass IGUs are manufactured for, but not limited to, use for windows and doors in projects within the following scope:
• All building types located at less than 800m above sea level.
• All NZS3604 wind zones up to and including extra high.
• Site specific design wind pressures above the NZS3604 windzone values (subject to design checks and confirmation).
New Zealand Building Code (NZBC)
The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:
- Clause B1 Structure: Performance B1.3.1, B1.3.2, B1.3.3, B1.3.4
• B1 Structure: Metroglass IGUs are manufactured to project specific requirements in accordance with acceptable solution B1/AS1 (which cites NZS4223 set of standards) - Clause B2 Durability: Performance B2.3.1, B2.3.1(b)
B2 Durability: Metroglass IGUs are manufactured to Acceptable Solution B2/AS1 and are tested by IGUMA to BS EN 1279–4 in accordance with NZS4223.2. Storage, handling, transport, preservation and glazing must be carried out in accordance with AS/NZS 4666:2012. Water must not be trapped against the edge seal as this will result in failure and ultimately condensation on the internal glass surfaces. IGUs must not be exposed to elevated heat. Refer to Window & Glass Association of New Zealand (WGANZ) website for proof of compliance https://www.wganz.org.nz/double-glazing-manufacturers/ - Clause E2 External moisture: Performance E2.3.1, E2.3.2, E2.3.7
E2 External Moisture: Glass is impervious to water. Adequate drainage is required in the glazing system to ensure that water, moisture, or condensation are not trapped against the edge seal as this will result in failure. - Clause F2 Hazardous building materials: Performance F2.3.1, F2.3.2, F2.3.3, F2.3.3(a), F2.3.3(b), F2.3.3(c)
F2 Hazardous Building Materials: Metroglass IGUs likely to be subject to human impact safety can be manufactured to specific project requirements to comply with NZS 4223.3 in accordance with F2/AS1 clause 1.0. - Clause F4 Safety from falling: Performance F4.3.1, F4.3.4
• F4 Safety from falling: Metroglass IGUs can be manufactured in accordance with NZS4223.3 clause 21 Window glazing safeguarding a fall, to the specific project requirements. - Clause G7 Natural light: Performance G7.3.1, G7.3.2
G7/AS1 Natural Light: Metroglass IGUs can be manufactured to the required Visible Light Transmittance (VLT) to project specific requirements. - Clause H1 Energy efficiency : Performance H1.3.1, H1.3.2E, H1.3.3
H1 Energy Efficiency: Metroglass IGUs can be manufactured to project specific centre of glassthermal transmittance (Ug). They are made from a range of glass types (i.e., Low E coated glass, float glass, laminates, obscures, tints), spacer widths and argon gas, which establish the IGU U-value to EN673, which ultimately is utilised to calculate the window R-value (by others).
Notes
Relevant Building Code clauses• B1 Structure: • B2 Durability • E2 External Moisture • F2 Hazardous Building Materials • F4 Safety from Falling: • G7 Natural Light • H1 Energy Efficiency:
Evidence
The product meets the requirements set out in the following documents, or relevant parts of cited standards within the documents:
Design requirements that would support use of the building product. Metroglass IGUs are manufactured for, but not limited to, use for doors and windows in projects within the following scope: • All building types located at less than 800m above sea level. • All NZS3604 wind zones up to and including extra high. • Site specific design wind pressures above the NZS3604 windzone values (subject to design checks and confirmation).
Design requirements
Design requirements that would support use of the building product Metroglass IGUs are manufactured for, but not limited to, use in projects within the following scope:
• All building types located at less than 800m above sea level.
• All NZS3604 wind zones up to and including extra high.
• Site specific design wind pressures above the NZS3604 windzone values (subject to design checks and confirmation).
Metroglass IGUs are customer manufactured to the requirements of each project. Prior to manufacture, the following project criteria are validated and confirmed by the purchaser:
• IGU size
• IGU thickness
• Glass thickness and type
• Project wind zone or specific engineering design factored wind pressure
• IGU performance criteria, i.e. U-value, Solar Factor, VLT, Safety Glass requirements, colour considerations
For guidelines see IGUMA IGU design limitations
https://metroglass.co.nz/products/windows-doors/double-glazing/sunx
Installation requirements
Metroglass IGUs must be installed in strict accordance with the https://assets.metroglass.co.nz/files/resources/care_and_maintenance/igu-handling-warranty-instructions-2014.pdf
and the IGUMA guidance document found here:
https://www.wganz.org.nz/wp-content/uploads/2018/06/Handling_and_Storage_of_IGU_-_Published_May_2015_-.pdf
Maintenance requirements
Metroglass IGUs are comprised of glass and sealant products which are sensitive to damage and deterioration during both the construction phase and in-service use. Metroglass IGUs must be maintained in accordance with Metroglass cleaning and maintenance guidelines, found here https://metroglass.co.nz/resources/glass-care
and the IGUMA cleaning and maintenance guide document found here: https://www.wganz.org.nz/wp-content/uploads/2018/06/IGU_Cleaning_and_Maintenance_Datasheet_06052000.pdf
Manufacturer
Legal Trading Name:
Metro Performance Glass
Business Email:
glass@metroglass.co.nz
Company Website:
metroglass.co.nz
Contact Number/s:
09 9273000
0800 545800
Product Identifier
GLASSTECH SUNX GREY LOW E DOUBLE GLAZED UNIT (IGU)
Warnings
This product has no warnings associated with it.
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Date last validated:
14 April 2025 |
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Date last updated:
14 April 2025 |
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