A healthier home,
a healthier family.
Replacement double-glazed windows & doors offer improved energy efficiency and sound reduction for your home. This allows greater heat retention in winter and keeps more heat out in summer while reducing our noisy environments from invading your homes. We can achieve this through our range of options for replacing your old windows and the levels of double glazing and joinery available.
Glass is a natural insulator making it a good heat absorber.
It absorbs thermal energy from the sun or your home’s interior heating, then gradually releases it from the glass into the space around it. This heat becomes unwanted solar heat in summer or thermal heat loss in winter. We have a range of solutions to minimise heat transfer and create a more energy-efficient home.
Our team can help you review which level of double glazing is right for your home.
Single-Glazed with Argon Gas
Traditional single glazed windows have a single layer of glass to separate one environment from another. Single glazing doesn’t provide effective insulation and increasing the thickness of the glass doesn't improve its thermal properties. Most New Zealand homes were traditionally single glazed and are now being replaced with a more energy efficient solution.
Double-Glazed with Argon Gas
Double Glazing is when two panes of glass (separated by a layer of air), are used in a home’s windows and doors.
This provides another layer of insulation for your home which decreases heat loss through your windows.
This is a good option if you do not have to much trouble with ‘crying windows’.
Double-Glazed with Argon
Argon gas is an inert gas that is denser than oxygen. It is placed between glass panes as an insulated glass unit to slow the rate of heat loss.
This results in a more thermally efficient product with a thermal performance increase at or around 15%.
This can be a good option for colder homes or on the southern side to boost the thermal efficiency.
Double-Glazed with Low-e
Low-E (Low Emissivity) is a layer on glass made to reflect the sun back out and from the house back in. Emissivity is a measure of the ability to radiate absorbed energy.
Today’s low-e coatings contain one or more silver layers that reflect the sun’s ultraviolet and infrared light to help maintain a comfortable interior temperature.
This is a good option if you need to really boost your homes thermal efficiency for warming in winter and cooling in summer.
*All our Low-E glass comes with Argon gas included.
Thermally broken aluminium joinery
Just as double glazing prevents warmth or cold from escaping through glass, the thermal break in an aluminium frame does the same for your joinery by stopping any heat transfer via the metal.
The result is an increased R-value* enabling Southern41™ Thermal to provide maximised protection against condensation making it easier for you to maintain your home at an optimal ‘healthy home’ minimum temperature of 18º Celsius, giving you significant energy savings.
*The R-value is a measure of how well a product insulates – the greater the value the greater the insulation properties.
This is a good option if you are concerned about future proofing your home or live in our alpine regions where thermal efficiency is essential.