Building regulations (1)

Why are there parts of my house without insulation?

Since the early 1970s, the insulation standards in the Building Regulations have been progressively introduced across Australia. The minimum insulation levels in the BCA vary according to climate zones and are expressed as total “R-Values”  (this means each building element in either the ceiling, wall, or floor has an R-Value which when added together gives a  total “R-Value). Currently, ceilings range from R-4.1 – 6.3, for walls R-2.8-3.8 and for floors R- 1.0-3.25.

If you’re unsure about the levels of insulation in your home  you can  arrange and inspection of your property by an approved insulation installer

We recommend purchasing the highest R- Value that your budget allows.

Ceiling insulation (10)

How much will ceiling insulation cost?

The cost depends on the size of your house and whether you have existing insulation. For example, in an un-insulated ceiling, buying the product that will generally bring you up to the minimum Building Code Standard (an R4.0 ceiling batt) will cost around $7 per square metre. Alternatively, if you already have insulation and want to ‘top-up’ then you could purchase an R2.0 roll, which will cost around $3 per square metre. Depending on the size of your home, it can take around three years to realise the payback* through savings on your energy bill.

We advise that you aim for the highest R-Value your budget will allow.

*Source: The Value of Insulation Based Residential Energy Savings Measures in Australia. Prepared by Energy Efficient Strategies September 2012.

 

How much ceiling insulation do I need?

This will vary on the type of building you have and where you live in Australia, but generally to meet the current Building Code of Australia requirements you need at least R-4.0 ceiling insulation.

We advise that you aim for the highest R-Value your budget will allow.

I already have some insulation in my ceiling; do I need to take this out first?

The existing insulation may not have much insulation value, but every little bit counts and there’s no point wasting what you already have. If the existing insulation is level with the ceiling joists, you can add the new layer of insulation over the top at right angles to the original layer – this creates a continuous layer of insulation and helps prevent thermal bridging through the joists.

We advise to aim for the highest R-Value your budget will allow.

Thermal Brigding

 

I use my ceiling for storage. Do I need to clear it out if I am having the insulation professionally installed?

Yes, you will need to clear the ceiling of any  stored objects before the insulation is installed. And who knows, you may even find some valuable, hidden treasures too!

 

I want to use my ceiling for storage, how can I do that if it is insulated?

You or your installer can also lay insulation boards called ClimaFoam® along with an 18mm layer of chipboard deck on top to provide storage space. Click here to view. These insulation boards are made from extruded polystyrene and are designed to be placed on top of the ceiling joists instead of the glasswool insulation. ClimaFoam is a perfect solution for storage space in the ceiling space as they have high compressive strength and provide great thermal performance. You will need a ceiling hatch which is minimum 600mm wide. Having R-2.5 glasswool insulation installed between the joists plus a layer of 50mm ClimaFoam board with a chipboard deck laid top and bottom gives the same thermal performance as installing R-4.0 glasswool insulation.

 

How long does it take professionals to install ceiling insulation?

Generally it should take half a day for a team of installers to insulate a ceiling, if you would like to arrange a professional install you can arrange here.

 

How long would it take me to insulate my ceiling?

Please read more detailed information here about installing ceiling insulation before carrying out any work. Having read the installation instructions it is important that you and your installation partner work at your own pace to ensure the installation is done safely and effectively,  avoid being in the ceiling space during the hottest part of the day.

Make sure you switch off the electricity supply at the mains before entering the ceiling space.

 

 

How can I insulate my skillion roof?

Installing insulation in a skillion roof is similar to installing insulation in a wall and will noticeably reduce the amount of heat transferred through your skillion roof. Most people use wall insulation in skillion roofs as there is limited space. The most common products are R-2.5 or R-2.7 90mm high density wall batts or if there is enough space, two layers of R-2.0 75mm high density wall batts.

Refer to the manufacturer’s instructions for example here or visit the ICANZ website for more detailed instructions.

 

 

 

Will glasswool insulation make my home quieter?

Glasswool insulation has both thermal and acoustic properties and will help reduce the transmission of sound from outside into your home. It can also reduce noise transfer between adjoining rooms when installed in internal partitions.
 

Can I install ceiling insulation myself?

Yes! Watch a video on how to install ceiling insulation here and make sure you read our detailed installation and health and safety instructions here, before carrying out any work. If you do not have the time or the confidence to do it yourself, you can arrange to have the insulation professionally installed.

Glasswool insulation (2)

What are the health effects of glasswool insulation? Is glasswool safe?

Glasswool has been in use globally for over 70 years and over 50 years of research has not found any cause and effect link between glasswool insulation and long term health problems.  When using glasswool in Australia look for the EUCEB and or FBS-1 logo for quality assurance.

EUCEB_OFFICIAL-CMYK-blue

FBS -1 WORLD 2014

Some types of glasswool insulation are also made without using a phenol formaldehyde binder, making them even safer to use in your home.

No-Added-Formaldehyde

Are rodents attracted to glasswool insulation?

No. Because glasswool insulation is made using glass it will not attract or provide a food source for rodents or insects.

Subsidies (1)

Am I eligible for subsidised insulation?

There are currently no national insulation subsidies. Some state governments are currently developing policies to encourage homeowners to improve the energy efficiency of their homes.

Our latest blog currently deals with some of the policies proposed by the new Victorian government.

Thinkinsulation (3)

What is thinkinsulation?

thinkinsulation.com.au is an initiative from Knauf Insulation. The aim is to increase public awareness of the benefits of insulation and how other energy efficient measures can contribute to a more comfortable home with the added benefit of saving money on energy bills. thinkinsulation.com.au can also arrange free no obligation quotes for wall, ceiling and underfloor insulation, using certified installers and high quality, warranted insulation products.

 

What are the benefits of insulating my home?

Glasswool insulation has many benefits such as:

1. Making your home warmer in the winter and cooler in the summer.
2. Making your home more energy efficient – this means making savings on your energy bills.
3. Reducing the transfer of unwanted noise from outside and between adjoining rooms.

I have solar PV system - do I need to insulate my home too?

Yes. By combining insulation, which reduces energy use, with a Solar PV system – homes can get even better value from their investment.

Adding insulation can reduce the up-front costs for the Solar PV system and can also improve the payback period for the system.

Underfloor insulation (5)

How much will underfloor insulation cost?

The cost depends on the size of your house. For example, to generally bring your floor up to the minimum Building Code Standard an R2.1 underfloor batt product will cost around $9 per square metre.

We advise that you aim for the highest R-Value your budget will allow.

 

 

How is underfloor insulation installed?

Underfloor insulation is installed from under the house and is placed hard up against the floorboards between the floor joists. It can be stapled or strapped to ensure it remains in place for the life of the building.

For more information, watch our underfloor insulation install video here.

 

Can I add insulation between the levels of my home to make it quieter?

Yes. Filling your mid-floor cavity can help reduce the transmission of sound between the floors of your home.

 

 

How can I arrange a measure and quote?

Yes! Watch a video on how to install underfloor insulation here and make sure you read our detailed installation and health and safety instructions here, before carrying out any work. If you do not have the time or the confidence to do it yourself, you can arrange to have the insulation professionally installed.

 

Can I install underfloor insulation myself?

Yes definitely – watch a video on how to install underfloor insulation here and make sure you read our detailed installation and health and safety instructions here, before carrying out any work. Alternatively you can arrange to have the insulation professionally installed.

Wall insulation (5)

How much will wall insulation cost?

The cost depends on the size of your house and whether you have existing insulation. For example, for un-insulated walls, buying the product that will generally  bring you up to the minimum Building Code Standard (an R2.5 wall batt) will cost around $9 per square metre.

We advise that you aim for the highest R-Value your budget will allow.

 

 

How is wall insulation installed?

There are two ways you can retrofit wall insulation – from the outside or from the inside.

For more information, watch our wall insulation install video here.

Some double brick cavity houses are also suitable candidates for blow-in insulation (Supafil) where silicone treated glasswool insulation is injected directly into the brick cavity. Making it an ideal solution for increasing the energy efficiency of older homes where it is impossible to install batts.

Please note that blow-in insulation is only suitable for double brick masonry construction and cannot be used on brick veneer or weatherboard houses. If you are interested in blow-in insulation for your home or to check its suitability click here to request more information.

Will adding glasswool insulation make my home quieter?

Glasswool insulation has both thermal and acoustic properties and will help reduce the transmission of sound from outside into your home. It can also reduce noise transfer between adjoining rooms when installed in internal partitions.

 

Can I add insulation to my internal walls to make my home quieter?

Yes. Adding insulation to your internal walls will help reduce the transmission of sound between rooms. For best results you should add insulation around your entertainment room, kitchen, laundry and bathrooms.

Can I install wall insulation myself?

Yes! Watch a video on how to install wall insulation here and make sure you read our detailed installation and health and safety instructions here, before carrying out any work. If you do not have the time or the confidence to do it yourself, you can arrange to have the insulation professionally installed.