Polyester Underfloor Insulation

Ceiling Insulation  

We offer the highest quality polyester underfloor insulation rated at R2.5

Underfloor insulation will:

Keep the floor warmer and stop your feet feeling cold
Stop draught coming up from under the floor
Reduce sound coming up through the floor
Shrink your energy bills as your home will use less energy to stay at a comfortable temperature

Yes, I just want to be more comfortable in my home.

Get Pricing Now

Quality and Safety from the Ground Up!

Save up to 20% of heat loss and add 1.5 Stars to your First Rate Energy Rating System when you install polyester underfloor insulation.

Remember, your underfloor area is as big your ceiling! A poorly insulated floor will not protect your home from unwanted heat gain in summer and will allow your expensive heating to escape in the colder months, costing you a fortune in energy bills.

Why is polyester the best type of insulation?

ecoMaster’s underfloor insulation is 100% polyester and is selected based on its exceptional quality and effectiveness. This product is high-performance, low allergenic, moisture and rodent resistant, and it maintains its loft for the lifetime of your home. It comes in long rolls, which means fewer joins for the best possible cover and no gaps.

I was very impressed by the team who installed my underfloor insulation. Those young men are a shining asset to your company, and a bad company does not attract and hold such quality employees.  I knew I’d chosen the right company to supply and install my insulation. Not only was the service fantastic, the price was stunningly good and the product works.  I am very pleased with the underfloor insulation. I have bare floorboards, which are no longer cold. I have one tiny gas heater in the lounge, and the whole house is now toasty warm.

Imogen, Greensborough

A big THANK you to Luke, Gerry, Dan and Victor. Before the guys came today and sealed our unit, we would both have our Doona over us and still be cold. The Airconditioner would be running at full steam. Tonight the Aircon is on low and we are Idadown free. We are over the moon and can’t thank you  enough, the difference is astonishing. All four guys were professional and such a pleassure to have in and under our home. This was not an easy job, as our unit has minimal height under the floor to deal with.  The guys all worked together and were only interested in making our comfort their priority. Soooooo happy.

Mark Evans, Springvalue

How does underfloor insulation work?

Without underfloor insulation, the cold air beneath your sub-floor permeates the timber making your home cold and uncomfortable. A timber floor is just 19mm thick, this combined with possible air leakage, create a heat sink beneath your home, drawing the heat out from below.

Insulation is measured in terms of ‘R’ value, which represents “Resistance to Heat”, the higher the ‘R’ value, the better the insulation. An un-insulated floor rates only R0.7. While carpet and underlay will make your feel more comfortable underfoot it only contributes slightly to the R rating (approximately R0.3), giving a total of just R1.0, which is insufficient rating for a comfortable home.

Underfloor insulation will increase your floor’s R rating, and make a huge improvement to your comfort. For example, the addition of our premium R 2.5 underfloor insulation will take the overall Rating of your floor up to a massive R 3.2 or R3.5 with carpet, earning a higher Energy Star Rating for your home and much more comfort for your household.

The Benefits of Underfloor Insulation:

 ✓  High performance for optimal effectiveness
Eco friendly comprising 45% recycled component
Non-Irritant, non-toxic, non-allergenic
Manufactured in Australia
High quality solution that last the lifetime of your home
Polyester insulation guaranteed for 50 years with ecoMaster installation guaranteed for 10 years. Click here to learn more.
ISO9001 Quality Certification
ISO4001 Environnent Management System Certification

How to Proceed:

Whether you want professional installation
or prefer DIY to save on your budget,
gets lots more information about
underfloor insulation and instant pricing.

YES! I want more information.


Just wanted to say how incredibly impressed I was with the team who put in our underfloor insulation. It was a very difficult job but they had a great attitude, managed to pull it off admirably and we’re thrilled with the result.

Oliver, Preston


How much clearance is needed for professional installation?

Our team require a minimum of 40cm clearance to achieve complete coverage of you underfloor area.

Can I DIY install underfloor insulation?

Yes, we can provide an estimate to supply the insulation and also provide installation instructions. To find out how click here.

What other types of underfloor insulation are available?

There are many materials used to insulate beneath floorboards, but none so effective as polyester batts, stapled firmly between the joists.

Over the years we’ve come across a variety of ineffective alternatives as shown below.

1. Insulation batts held up with packing strap.
This quick and cheap installation method doesn’t hold the insulation firmly against the floorboards, allowing space for air flow between the material and the floorboards and easy access for rodents.

2. Reflective insulation joined end-to-end.
Does not allow adequate still air space and is virtually impossible to install the sheets end-to-end without gaps, making it ineffective.

3. Builder’s Blanket secured by mesh wires.
As you can see above, a few short years later the material is sagging (allowing air infiltration) and the product is breaking down due to water damage.

4. Fibreglass bulk insulation secured with chicken wire.
Over time, the fibrous nature of this underfloor insulation has allowed it to break down, rodents have carried some of it away and while the securing mechanism did stay in place, the material did not.

What is the best type of underfloor insulation available?
Having reviewed all of the different types of underfloor  insulation available. We choose Autex Polyester for its effectiveness, longevity and non-toxic properties. Our installation technique ensures a snug fit as we staple the insulation every 100mm -150mm.

Want to get the most out of your home?

An ecoHome Assessment is a detailed analysis of your home’s thermal performance. Following your tailored retrofit plan you can make sure your investment counts as you take a targeted approach to optimising your home.

Choose Your Assessment Here