Suitable for new residential and multi-residential windows and doors where high thermal performance and natural light are required.

Therma Light™ is particularly suited to:

• Energy efficient and low carbon homes
• Passive House and high performance building designs
• Homes in cooler New Zealand climates
• Living areas, bedrooms and regularly occupied spaces
• Large windows and glazed doors
• Projects prioritising natural light and passive solar gain
• Clear windows where a neutral appearance is preferred
• Thermally efficient window systems designed to exceed minimum H1 requirements
• Buildings within NZS 3604 wind zones up to and including Extra High, subject to appropriate glass, panel size and frame selection

• Therma Light™ allows more solar heat into the building than SolarPro™ Light or SolarPro™ Plus and may not be suitable for large areas of sun exposed glazing where overheating is a risk.
• Triple glazed units require a larger glazing pocket than standard double glazed units. Frame compatibility must be confirmed before specification.
• Triple glazing is approximately 30% to 50% heavier than double glazing, which affects handling, installation, hardware and structural requirements.
• Must be glazed in accordance with Metro Performance Glass glazing instructions, the frame supplier’s requirements and the current New Zealand Building Code

When specified as part of an appropriately designed and installed window or door system, Therma Light™ Low E Triple Glazing complies with or can contribute to compliance with relevant provisions of the New Zealand Building Code, including:

• B1 Structure
• B2 Durability
• E2 External Moisture, as part of the complete window or door system
• F2 Hazardous Building Materials
• F4 Safety from Falling, where specifically designed for this purpose
• G7 Natural Light
• H1 Energy Efficiency

• U-value, Ug centre of glass: 0.6 W
• Solar control, solar factor or g-value: 49%
• Visible light transmission (VLT): 70%
• Fading protection (Tdw-ISO): 0.57
• Appearance: Clear
• Triple glazed units incorporate three panes of glass and two argon filled cavities
• Triple glazed units are manufactured and tested in accordance with BS EN1279
• Safety glass options are manufactured in accordance with AS/NZS 2208
• Glass selection and installation are undertaken with reference to NZS 4223

Warranty & Maintenance

• 10 year double glazing warranty
• Refer to the attached Metro Performance Glass warranty document and registration link
• Maintain in accordance with the Metro Performance Glass care and maintenance guide

Therma Light™ Low E Performance Data