Double Glazing Low E

Double Glazing Low E

Choose from our range of Low E double glazing, to select the perfect glass for your performance needs.

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.

VIDEO - Benefits of double glazing
diagram of double glazed unit thickness

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.

View Benefits

The diagram below shows how Low E double glazing technology works

Warranty & glass care

To register a warranty or find out more about the warranties we offer.


For handling, care and maintenance information.

Glass Care & Maintenance

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


Lower means less solar heat coming in


Higher means more natural light coming in


Lower means better fading protection


Spacious glass sliding doors opening to a panoramic hillside vista
Standard Double Glazing
Modern grey bedroom with ceiling-to-floor windows overlooking lush bushland
Xcel™ Low E (Double Glazing)
Inviting modern room with expansive glass corner opening to a lush outdoor setting
Xtreme™ Low E (Double Glazing)
Light champagne
Spacious and breezy conservatory with ocean vistas and a white seating arrangement
SunX™ Grey Low E (Double Glazing)
Subtle grey tone

Video: Benefits of Metro Double Glazing

Click the image to play video.

The glass you choose can make a huge difference to the comfort of your home and the size of your power bills. Metro double-glazing Low E glass can reduce the amount of power needed to keep your home at a comfortable temperature year round.

Benefits of Low E Glass

High Thermal Performance

Keeps you warm and cozy in winter

Solar Control

Helps protect against overheating in summer

Reduce Power Bills

Use less power for heating and cooling

Fading Protection

Helps protect furnishings from fading

Reduce Condensation

For a warmer, drier and healthier home

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