What is the difference in benefits between double glazing and insulation?

Both double glazing and insulation provide year-round comfort and cut heating and cooling bills, but which one is best?

In many homes, insulation is the most practical and cost effective way to make a house energy efficient. Insulation acts as a barrier to heat loss and gain, in particular in walls, ceilings, walls and floors. Energy retailer AGL estimates efficient insulation can bring the temperature down by up to 7 degrees in summer, and increase it by 10 degrees in winter, slicing more than $100 off your power bill every year.

There are typically two main types of insulation: bulk insulation and reflective insulation.

Bulk insulation comes in batts, rolls, boards and can be made from materials like glass wool, polyester, natural wool or recycled paper. Bulk insulation is usually used in homes located in cooler climates.

Reflective insulation is used to keep your home cool in summer by deflecting radiant heat. Reflective insulation is shiny aluminium foil laminated onto paper or plastic, and usually used in homes located in hot and very sunny climates.

One important factor central to the inside temperature of a house is its windows. Windows are a major cause of unwanted heat gain in summer and heat loss in winter. According to Your Home, up to 40% of a home’s heating energy can be lost and up to 87% of its heat gained through windows. Therefore, reducing temperature fluctuation through windows is crucial to reduce energy costs and greenhouse gas emissions - double glazing can do just this.

The verdict?

Double glazing focuses on the areas in the home which let in and let out the most air – your doors and windows. It’s best to talk to a professional if you’re unsure which way to go.