Energy Efficient Windows and Glazing

The easiest way to reduce your heating and cooling costs is through efficient window insulation as well as ceiling and wall treatments.

The comfort of your home depends on your windows and it is easy to achieve these reduced costs

by choosing the correct glass. Overall energy consumption decreases along with the costs associated with artificial climate control.

The use of Insulglass ( double glazing ) reduce the heat transfer through the window by 50%

Add products like Low E glass, tint, argon gas filled units in the place of air and the performance of Insulglass units improve significantly. A unit with tinted glass reduced heat gain by up to 50% and

Low E glass improved heat loss by up to 70%

Insulglass also referred to as double glazing is an excellent choice of window insulation and provides home owners and builders a cost effective way to achieve superior energy ratings.

Our Climate

In a predominately mild climate like Melbourne  ( its zoned as a cool climate ) the best results are obtained from windows that insulate well ( low U value ) and admit plenty of free solar energy ( high solar heat gain coefficient  – SHGC ) . Tinted glass will reduce the SHGC values .

Cool temperatures or heating climates are those in which a typical house uses more than 70% of its total space – conditioning energy for heating in winter and less than 30% for cooling in summer.

It is better to install efficient windows than to rely on heating and air conditioning systems to solve thermal comfort problems. There are some considerable energy savings that can be made by using better window and glazing selections.

Double Glazing

Double glazed units consist of two panes of glass separated by a spacer around the edges and sealed to the perimeter, in a factory controlled conditions. The spacer contains a desiccant which eliminates moisture vapour in the cavity. The cavity can be filled with air or as preferred by Golden Windows argon gas. The trapped air/ gas in the gap acts as a insulator. It does not stop heat being conducted from the inner pane to the outer pane – but it does slow heat transfer by conduction down a lot! The gap is too narrow to allow the air to circulate easily. This therefore also reduces the rate of heat transfer by convection.

Low E Glass

Low e glass has a special coating on the internal face of the glass, which has a low rate of emission. It has a lower rate than normal glass of allowing heat to pass through it. In other words, if there is a heat source inside your house ( or outside ), the glass bounces the heat from that object away from the glass. So in winter months, if you have Low e glass in your home, much of the warmth ( heat ) given off by heaters will  bounce back into the room. In the summer, the same thing happens but in reverse. The sun heats things up ( bricks, concrete, driveways etc ) outside of your house. This heat radiates from these objects and tries to get into your house. With Low e glass much of this heat bounces off the glass and stays outside.

Glazing has a major impact on the energy efficiency of your home. Poorly designed windows can make your home too hot or too cold. If designed correctly, they’ll help maintain year round comfort, reducing or eliminating the high costs of heating and cooling.

The staff at Golden Windows can help you achieve the best results for your budget and requirements.