What is double glazing?
Double glazing is an insulated glass unit (IGU) assembled and sealed in a controlled factory environment.
Double glazing is used in windows and doors and is made up of two panes of glass separated by a spacer, and the space is typically filled with air or an inert gas like argon.
It means that getting double glazing can provide better thermal insulation, keeping your home warmer in winter and cooler in summer, allowing you to have a more consistent and comfortable temperature year-round.
Metro double glazed units are locally processed in our New Zealand plants and are distributed across the country.
Our double glazed units are also regularly tested by BRANZ and are compliant with EN1279.
All of our double glazed units come with a 10-year warranty.
What is Low E?
It is short for Low Emissivity glass.
Low E glass is energy efficient with a special coating that lets in visible light while reflecting heat to maintain indoor comfort levels.
Metro Low E can reduce heat loss by up to 61% compared to standard double glazing which will help keep your power bills down.
If overheating is an issue in the hot summer months, our solar control Low E range can help reduce solar heat by up to 58% when compared to standard double glazing.
Our selection of Low E glass is tailored to New Zealand conditions, offering a variety of performance benefits to cater to your specific priorities.
The diagram below shows how Low E double glazing technology works
Compare Performance
To help you select the right glass for your double glazing, this table helps you compare the performance of our range.
U VALUE (make-up of 4-14-4)
Insulation value, lower is better
SOLAR FACTOR (SF)
Lower means less solar heat coming in
VISUAL LIGHT TRANMISSION (VLT)
Higher means more natural light coming in
FADING PROTECTION (Tdw-ISO)
Lower means better fading protection
COLOUR HUE
Our Glass works with every type of window frame
Our Low E glass work perfectly with all types of window frames: wood, aluminium and uPVC
Explore Metro's advanced Low E double or triple glazing range for superior performance. Contact us today to discuss the ideal glass solution for your project on 0800 545 800