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How much does insulation cost? | 2020 cost guide

13th Dec '19 • By Jared Jeffery

Service.com.au is determined to provide our loyal readers with everything you need to consider both financially and practically when adding insulation to your property. We have covered everything so you do not need to research anywhere else. Enjoy!

Adding insulation to your home can cost anywhere from $1,400 to $4,000 onwards, depending on the size of your home and choice in insulation. 

As residents of the beautiful country that is Australia, there is one thing we know for certain; it is hot. With temperatures continuing to rise year after year (thanks climate change) we can declare that there is no better time to consider adding insulation to your home. 

Not only will insulation improve your own comfort, it will also reduce your energy bills and add value to your home. So it comes as no surprise that more people are growing interested in finding out just how much insulation costs. 

Service.com.au is determined to provide our loyal readers with everything you need to consider both financially and practically when adding insulation to your property. We have covered everything so you do not need to research anywhere else. Enjoy! 

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Article Overview 

  • How much does it cost to insulate a house? 
  • Factors that may increase your insulation cost 
  • Types of Insulation 
  • Taking quotes and choosing a professional for insulation 
  • Insulation FAQs

How much does it cost to insulate a house? 

Adding insulation to your home can cost anywhere from $1,400 to $4,000 onwards, depending on the size of your home and choice in insulation. 

There are a few different methods of insulation and each one comes with a different price tag. For example, ceiling insulation can cost between $1600 to $2400. Then under-floor insulation sits between $2800 to $3500. Wall insulation is more expensive at $3200 to $4800. 

Professionals typically charge an hourly rate which increases your installation cost. The average hourly rate in Australia is between $40 and $150 per hour. 
 

High Range Insulation Hourly Rate - Above $80 per hour 

In the high range you will be dealing with a very experienced service provider who will get the job done fast and efficiently without any worries. They uphold a stellar reputation, provide an excellent service and have great communication.  

Medium Range Insulation Hourly Rate - Around $60 per hour 

In the medium range professionals have a few years experience and are able to provide quality work. This is the most commonly sought after price range for most home insulation installations. 

Low Range Insulation Hourly Rate - Below $45 per hour 

In the low range you may be dealing with a less experienced professional who is just starting out, it may take longer but you can usually get a better price. A word of warning, if a quote sounds too good to be true it probably is. 

DIY Insulation 

You can save a significant amount of money on insulation when doing it yourself! When you do it yourself, you only need to buy the insulation itself. This skips the costs associated with installation. DIY costs may be around $1250 for R 5.0 batts for 100m2 of coverage. As low as $115 for reflective insulation for 60m2 coverage and below $100 for insulation boards. 

Factors that may increase your insulation cost 

As with any job there are factors that can increase your overall cost. For insulation the main factors include; access to your property, thickness of the material, obstructions and spacing between joists. 

Types of Insulation 

The main types of insulation are reflective insulation, batt insulation, spray insulation, loose fill insulation and insulation boards. Let’s break them down in further detail.

Reflective Insulation 

Reflective insulation is a popular choice, it features a paper core and aluminium which works by reflecting heat off the house. Installing reflective insulation is however a demanding task that is quite dangerous and best left to the experts. Some reflective insulations even utilise a honeycomb core that minimises heat gain within the insulation itself. 

Batt Insulation 

Batt Insulation also offers a reflective surface but is typically formed by fibreglass or cellulose materials. This option prevents heat entering the house through tiny air pockets that trap the heat. 

 

A special consideration with Batt Insulation is that it comes with something known as a “R” value, this system tells you how efficient the insulation is. The higher the R value the better for batt insulations. It ranges from 1-5, with 5 being more expensive but definitely more effective overall. 

Spray Insulation 

Another installation that is best left to the professionals due to the complexity and associated risks. Spray insulation similar to Batt insulation uses air pockets. Spray insulation also requires special equipment, so is probably best to use a professional. 

Loose Fill Insulation

Loose fill insulation is widely used for ceiling insulation and is ideal due to its capacity to conform to anything without disrupting structures or finishes. Again, air pockets are present and this task is also advised to be left to the professionals. It can be made of wool, cellulose or fibreglass.

Insulation Boards

Insulation boards are most commonly used under flooring and are widely available. Some even have aluminium backing. 

Taking quotes and choosing a professional for insulation 

As mentioned, hourly rates and insulation costs can vary depending on a number of factors. In order to get the most accurate quote for your job you should approach several different professionals with as much information as possible about your specific job. It may even be wise to have an inspection prior to accepting a final quote. 

As we also mentioned, professional charge per hour and across a low, medium and high range. We would always advise investing in a well established professional to ensure you receive the highest quality insulation and installation. 

There are a few key questions you can ask insulation professionals: 

  • Are you qualified for this job? 
  • Do you have insurance?
  • Do you have all the appropriate equipment?
  • Will you provide a written quote?
  • How long will my job take? 

While the temptation of cutting costs by DIYing your insulation can be quite tempting, we always advise enlisting the help of a trained professional to ensure a positive outcome. 

You can browse upon local insulation professionals on Service.com.au. 

 Get Underfloor Heating Quotes Now

Insulation FAQs

Which type of insulation is best for my home? 

This is a question best posed to professionals when taking quotes as often it completely depends on your home’s current situation, layout, your budget and other contributing factors. Discussing your options with a professional is the best way to ensure you choose the right insulation for you. 

How much does it cost to insulate a home? 

Adding insulation to your home can cost anywhere from $1,400 to $4,000 onwards, depending on the size of your home and choice in insulation. 

Where can I find an insulation professional? 

You can browse upon local insulation professionals on Service.com.au. 

How long will it take to install my insulation?

Again, this question should be asked before beginning work with your chosen professional. Insulation installation can take anywhere from one week to a few months to properly install. 

Is insulation worth it?

100%, if you are looking for a long term investment that will improve your quality of life at home and home value overall than insulation is a goer. 

 

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