Existing Homes
Unless your home was specially constructed for energy efficiency, you can probably reduce your energy bills by adding more insulation. Many older homes have less insulation than homes built today, but even adding insulation to a newer home can pay for itself within a few years.
At Oz Homes Insulation we are committed to making this process as easy and hassle-free as possible. We offer a free quote and advice on the best insulation option for your home.
Start Here
To determine whether you should add insulation, you first need to find out how much insulation you already have in your home and where it is. Oz Homes Insulation’s qualified home energy assessor will include an insulation check as a routine part of a whole-house energy assessment. An energy assessment, also known as a home energy audit, will also help identify areas of your home that are in need of air sealing.
If you live in a newer house, you can probably get this information from the builder. If you live in an older house, you will have to inspect the insulation — or simply give us a call.
The Science
To understand how insulation works it helps to understand heat flow, which involves three basic mechanisms.
The way heat moves through materials — such as when a spoon placed in a hot cup of coffee conducts heat through its handle to your hand.
The way heat circulates through liquids and gases. It is why lighter, warmer air rises and cooler, denser air sinks in your home.
Radiant heat travels in a straight line and heats anything solid in its path that absorbs its energy.
Most common insulation materials work by slowing conductive heat flow and convective heat flow. Radiant barriers and reflective insulation systems work by reducing radiant heat gain.
Regardless of the mechanism, heat flows from warmer to cooler areas until there is no longer a temperature difference. In winter, heat flows directly from all heated living spaces to adjacent unheated roofs, garages and basements, and especially to the outdoors. It also moves indirectly through interior ceilings, walls and floors — wherever there is a difference in temperature. During the cooling season, heat flows from the outdoors into the house.
To maintain comfort, the heat lost in winter must be replaced by your heating system and the heat gained in summer must be removed by your cooling system. Properly insulating your home decreases this heat flow by providing effective resistance to it.
For a radiant barrier to be effective, the reflective surface must be in contact with an air space.
Materials
To choose the best insulation for your home you need to know where you want to install it and what R-value you want to achieve. Other considerations include indoor air quality impacts, life cycle costs, recycled content, embodied carbon and ease of installation. Some insulation strategies require professional installation, while homeowners can easily handle others.
Fibreglass, rockwool, cellulose and natural fibres. Bulky materials resist conductive heat flow in a building cavity.
Rigid foam boards trap air or another gas in their cells to resist conductive heat flow.
Highly reflective foils in radiant barriers and reflective insulation systems reflect radiant heat away from living spaces, making them particularly useful in cooling climates.
Other materials such as cementitious and phenolic foams and perlite are also available.
Rated 4.9 / 5 On Google
Homeowners right across Victoria trust us with their insulation. Here is what some of them had to say.
I highly recommend Oz Homes Insulation. Dealing with Sam was so easy and the discussion about what was the best choice to replace my 20 year old blow in insulation with 5.0 R batts. The 3 installer's doing the job on the day were very tidy and considerate of my property...
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Gabrielle Driscoll
Absolutely pleased by Oz Homes in installing insulation for my ceiling, underfloor and wall spaces. Affordable, responsive, professional in how they went about the work. They had to get into tight spots and did it with enthusiasm and no complaints. Totally recommend them!
David Chen
Just had Oz Homes Insulation remove the old blow-in insulation from my roof space. I received the quote and had the job done all within a few days after my initial contact with Sam. Very pleased with the final outcome as you can see on the attached before and after photos. Would definitely recommend them.
Loris Salerno
I rang Sam with very short notice if he could do a job two days later. He explained the process and said he could do the job and would use the Bradford high-performance R5 batts. The quote was comparable with the other companies that I had approached, but they weren't going to use the R5 batts...
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chris waite
Free Quote & Advice
We are committed to making this as easy and hassle-free as possible. Tell us about your home and we will recommend the best insulation option — with a free quote.