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Floor Insulation in Sydney Australia

With over 15 years of experience, we are leading Floor insulation installation contractor in Sydney ,Wollongong and Central coast.

Floor insulation is simply insulation of the floor or under the floor. This can be done in different ways, but most often, insulation of the ceiling in the basement or ground floor is seen in Sydney and nearby areas. Floor insulation prevents the heat from disappearing through the floor and thus ensures a more even and comfortable temperature in the home.
Floor insulation can be a particularly good investment if you experience problems with drafts from the floor.
The cheapest way to insulate a floor is to inject insulation into the space under the floor or in-floor separations. Unfortunately, not all types of floors have this gap, and if you have to break up the floor and lay a new floor or install a completely new all-terrain deck, it is much more expensive.

As a rule of thumb, it pays to re-insulate the floors if your house is over ten years old. An old uninsulated house uses three times as much energy to heat the home as a new well-insulated house. So you can save a handsome amount of money annually on your heating bill by re-insulating your floor.

Different types of floors that can be insulated in Sydney Australia

How your floor should be re-insulated and how much it will cost depends on what kind of floor you have.

  • Is the floor above an unheated basement?
  • Is the floor above a crawl space?
  • Do you have off-road decks, so you don’t have any basements?
  • Do you have a cavity right under the floor?
  • Do you want to insulate the floor on the first floor?

If you have a cavity under the floor, or if you want to insulate the floor on the first floor, the insulation can usually be injected. It is usually easy to inject paper granules or flamingo granules into the cavity under the floor.

Suppose a floor needs to be re-insulated above an unheated basement. In that case, the Knowledge Center for Energy Savings in Buildings recommends that the insulation be at least 200 mm. If you want a low-energy solution, 300 mm is recommended.

When the floor is re-insulated, the basement becomes colder and more humid. It is, therefore, essential that the basement has no signs of mold or moisture, as re-insulating the floor, in that case, will give mold much better growth conditions.

floor insulation

Australian standards for floor insulation

If you have to renovate your floors, then according to the Building Regulations, you must also re-insulate if – and only if – re-insulating is worthwhile.
According to the Building Regulations, it pays to re-insulate if the price of the re-insulation can be repaid in less than 30 years.
You can calculate this yourself or get help from the Energy Service, an energy adviser, or a craftsman.

What are the benefits of floor insulation in Australia?

  • Floor insulation is one of the best ways to improve your home.
  • It is especially effective in keeping your home warm during the winter months.
  • Floor insulation can also reduce your heating bill.
  • The best thing is that it is a simple solution that can significantly improve your quality of life.

Prices for floor insulation in Sydney 2023

The cost to insulate your floor depends primarily on whether you have a cavity under the floor.

It is easy to inject granules into a cavity, but if you have to break up the floor, it is a much larger operation that can cost up to 10 times more.

The prices for the different ways to re-insulate the hood are as follows:

  • Blow floor insulation under the living room floor or floor dividers. This method is not that expensive but needs to be done by professionals. Flamingo granules are often used, which can be injected into the cavity, but paper granules are also a good option. It costs approx. Cost is calculated per square meter to inject insulation in this way.
  • Establishing a new off-road deck is costly, as the existing floor must first be removed before laying an insulating material, as well as a layer of concrete and a new floor. This costly solution is only a good choice if you have huge problems with moisture. You can insulate with Glass wool, acoustic and Polyester.
  • Insulation of wooden floors on joists – you can sometimes lift the wooden boards off and insulate the floor from above. 


Is it worth it to insulate the floor?

It usually pays to re-insulate your floor if you can inject granules into a cavity. However, if you have to break up the floor, it is only sometimes sure that it will pay off.

However, whether it pays to re-insulate your floors must be calculated accurately.

First, find the following prices:

  • How much does it cost to install the new floor with post-insulation also?
  • How much does it cost to install the old floor without additional insulation?

These two amounts are subtracted from each other, and you divide this amount by how much money you can save annually if the floor is re-insulated. Thereby you can find out how long it takes to pay off the cost of the additional insulation about your savings on the heating bill. If you want some excellent offers on how much it costs to insulate your floor, you can contact Ali Rapid Insulation here and describe your task. Then you get help to find the right craftsmen.

Insulation of the floor without a basement - options

 We have already touched on the possibilities of insulating a floor without a basement. As mentioned, there are several different solutions you can use. Which solution is right for you largely depends on the extent of the renovation or conversion.

Insulation under the floor without removing the floor

If the construction of the house makes it possible, you can blow flamingo granules or paper wool under the floorboards. This method can be used without having to break up the existing floor.
However, drilling holes to inject the insulation material under the floor will be necessary. You must assess whether you can live with the holes being subsequently patched and possibly becoming visible.
However, this method can only be used in some cases. The wooden structure has a high risk of moisture and mold forming if the work is not carried out correctly. It is, therefore, always a good idea to consult with a professional.

Insulation by removing the existing floors

In connection with significant renovations in older houses, there is often a desire for better floor insulation. Here you have the opportunity to make the most effective insulation, and at the same time, you can ensure that the construction is entirely up-to-date.
By breaking up the floors and concrete layers, you can dig out so that there is room for the required insulation thickness.

This solution also provides the opportunity to install underfloor heating in the home insulation– we will go into more detail about this later in the article.

A thorough floor renovation like this includes the entire house, and it will, among other things, means that all contents must be removed before work can begin.

Insulation of the house plinth

If there is no insulation from the inside, a solution is to insulate the plinth around the house. This solution requires excavating around the house so that there is room to install the insulation.
This type of insulation is quite extensive, but on the other hand, all the work is kept outside the house. You must, therefore, neither break up floors nor make other drastic changes to the interior construction.

Insulation of floor in apartment Australia-Sydney

If you live in an apartment, the options for floor insulation are more limited. Nevertheless, with additional insulation, you will achieve a significantly better indoor climate and reduce noise nuisance from upstairs and downstairs.
In older properties with wooden floor separations, blowing insulation into the wooden structure will be possible. Alternatively, the floors must be removed, and insulation must be done from above.
These solutions naturally require the landlord or owner of the property to take the initiative for the improvement. If that is not an option, you can minimize the inconvenience of drafts and cold floors yourself. Various thin thermal sheets can be laid under carpets and hard floors such as laminate and parquet floors.
The thermal plates are relatively thin but still have an insulating effect, which will be felt in the cold time of the year. This solution could be better, but you can achieve a noticeable difference on the floor.

Insulation of floor in summer house

In principle, there is no difference between the floor insulation in a holiday home and an ordinary home. However, here you also distinguish whether the floor must be removed completely or whether insulation material can be blown under the floor.
The construction of the summer house determines which type of insulation is best suited for the individual home. If it is an older summer house with poor insulation and a lack of moisture barrier, you must pay special attention when re-insulating the floor. The risk of moisture occurring in the construction is excellent, and moisture can develop into rot and fungus.
If you need to learn the construction of the summer house in detail, you must seek help from a professional.

Floor insulation with Glass wool acoustic and Polyester

In Australia, particularly in Sydney, insulation with Glass wool acoustic and Polyester is the traditional and best-known form of re-insulating floors. As mentioned, Glass wool is blown into the structure’s cavity to achieve the best insulation.
Glass wool is a recycled material that is produced from old newsprint. The tiny cellulose fibers from the paper are hollow, which gives a very high insulating effect. This knowledge has been known for years, and if you go up to the attic or under the floorboards in old houses, you will very often see used old Glass wool as insulation material.
The fine Glass wool acoustic and Polyester are distributed in all cavities, around pipes, etc. The uniform distribution of the Glass wool acoustic and Polyester makes this type of insulation very effective compared to, e.g., insulation boards and mats that are difficult to fit precisely.


How much does it cost to get floor insulation in Sydney?

The price of floor insulation can vary, depending upon the quality of the product; if the Floor has to be broken up and new insulation has to be laid, a completely new ground cover under your home can cost different, and Floor insulation of brand new house cost extra. Get a Quote Now

How long does it take to make floor insulation?

Depending on the area size, you need to have floor insulation laid, the time may vary, and you should be aware that it may take a few days. Talk to your floor installer about how long it will take before you start so that you can plan accordingly.

Who should I contact for floor insulation?

A floor installer can be responsible for floor insulation, so you can be sure it will be done according to legal requirements and applicable regulations. However, you should hire a professional to insulate your floors or consult with Ali Rapid Insulation.

When should the floor be insulated?

 All floors must be insulated, but the amount of insulation can vary. If the insulation is less than 75 mm, it is well worth re-insulating, as you can save money on heating your home and keep the summer heat away.

Which floor insulation is best?

The best floor insulation is Glass wool, acoustic and Polyester. Most often, however, it is actually what is called EPS, short for expanded polystyrene, a product that consists of no less than 98% air and is ideal for floor insulation.

What product do you use for Insulation?

We only use Bradford products in all our insulation work.