Metro's high performance Xcel™ double glazing can significantly reduce heat loss, and make for a warmer, drier, healthier home. Double glazed windows will help keep generated heat inside, keeping your home at a more consistent temperature - cutting down your power costs to heat in winter.
Double glazing is made from two pieces of glass sealed together with an air space in between. A double glazed window sits in your window frame just as regular single glazing would, but provides a number of extra benefits. Whether you are looking to keep your home warmer, quieter or reduce condensation, Metro can recommend the best combination of glass types to meet your needs because they have the widest range in NZ.
• Xcel™ is the classic option, perfect for most New Zealand homes
• Up to 61%* better heat retention
• Lets in 80% of visible light, enabling warm, naturally light-filled spaces
Refer also to: WGANZ guide to visual quality here
WGANZ guide to condensation and dew here
WGANZ guide to thermal stress and breakage here
B1 Structure: Metroglass IGUs are manufactured to project specific requirements in accordance with acceptablesolution B1/AS1 (which cites NZS4223 set of standards)
B2 Durability: Metroglass IGUs are manufactured to Acceptable Solution B2/AS1 and are tested by IGUMA to BS EN1279–4 in accordance with NZS4223.2. Storage, handling, transport, preservation and glazing must be carried outin accordance with AS/NZS 4666:2012. Water must not be trapped against the edge seal as this will result in failureand 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 compliancehttps://www.wganz.org.nz/double-glazing-manufacturers/
E2 External Moisture: Glass is impervious to water. Adequate drainage is required in the glazing system to ensurethat water, moisture, or condensation are not trapped against the edge seal as this will result in failure
· 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. NZS4223.3. Metroglass IGUs can be manufactured in accordance with NZS4223.3 for human impact location to the project requirements.
· 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.
· G7/AS1 Natural Light: Metroglass IGUs can be manufacturedto comply with the building code or to the required Visible Light Transmittance (VLT) of the IGUs specifiedto the project specific requirements. design.
· H1 Energy Efficiency: Metroglass IGUs can be manufactured to project specific centre of glass thermal transmittance (Ugw). 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).
- B1 Structure: Metroglass IGUs are manufactured to project specific requirements in accordance with acceptable solutions B1/AS1 (which cites NZS4223 set of standards), or by specific engineering design to B1/VM1 by other parties
- 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
- E2 External Moisture: Glass is impervious to water. Adequate drainage is required in the glazing system
- 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
- F4; G7/AS1; H1 Metroglass IGUs can be manufactured in accordance with NZS4223.3 clause 21 or to the required Visible Light Transmittance (VLT) and/or Metroglass IGUs can be manufactured to project specific centre of glass thermal transmittance (Ugw)
Metroglass IGUs are manufactured for, but not limited to, use in projects within the following scope:
· All building types located at less than 800m[AG1] 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 [AG1]I couldn’t find anything that refers to sea level. Is this a limitation or can we go right to sea level?
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
Installation requirements Metroglass IGUs must be installed in strict accordance with the Metroglass installation and handling guidelines and the IGUMA guidance document found here.
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 and the IGUMA cleaning and maintenance guide document found here.
CLASS 2: IGU INSULATED GLASS UNITS
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