How Double Glazing Works

Double glazing can make a big difference to comfort levels and energy efficiency of your home. Up to 31% of a home’s heating or cooling loss is through ordinary glass windows and doors. Double glazing can reduce this by up to 73%.

A double-glazed IGU (insulated glass unit) uses two glass panes, separated by a 6-12mm gap which is filled with air or a harmless insulating gas such as argon.

The transfer of heat or noise through the window is then greatly inhibited by the gap between the two panes.

Special kinds of glass are also available which have greater insulative properties in the glass itself, further enhancing the effectiveness of double glazing.

	Read More Heating A heatpump can give up to $4.50 worth of heating for every $1 of power. And combined with the right insulation your cost of heating can go down from $100 to $20 per month! Ventilation Eliminate condensation forever! Bring healthy, fresh, dry air into your home. NZ Standard 4303 (1990) "Ventilation for Acceptable Indoor Air Quality" specifies the minimum residential Insulation Nearly 1 million New Zealand homes were built before insulation became mandatory in 1977 (BRANZ Study Report No. 142).An estimated 300,000 of our homes still have little or no insulation. These homes are cold, draughty and waste energy.