Polyester Insulation: Everything You Need To Know

polyester on grass

If you are investigating your options for insulation, you have most likely come across polyester insulation. It is an effective and safe insulation type made from a high percentage of recycled material. But what is polyester insulation made from, and what kind of homes is it suited for?

What Polyester Insulation Is Made From

Polyester insulation is made of Polyethylene Terephthalate (PET). This is a fibre commonly used in many household products like clothes and mattresses. PET is made of up to 85% recycled materials, sourced from things like plastic bottles, plastic bags, and other types of packaging. 

This means that after use, Polyester Insulation is able to be fully recycled. Some suppliers are even committed to making and disposing of their products in a zero- or low- waste cycle.

Why Choose Polyester Batts?

There are various instances as to why polyester insulation is a suitable choice. Here we address the most common reasons.

Polyester Insulation is Safe

Because polyester insulation is made from the same material commonly found in many household products, it is completely safe and doesn’t release any odour or chemicals. The fibres themselves are non-toxic and hypoallergenic so they won’t irate your body in any way. 

In addition, polyester insulation isn’t affected by mould, mildew, or other types of moisture buildup so it won’t release any kind of toxic material into your home. They are a great option for people with dust allergies, hay fever, asthma, or any other similar conditions. 

Polyester Insulation Provides a High Level of Effectiveness

You might be aware that polyester is often used in the clothing worn by adventurers travelling to the coldest parts of the world, and the same technology that keeps those people warm will keep your home temperate in any weather. Polyester batts are also thermally bonded, which prevents deterioration over time and ensures that your insulation continues to be effective. 

Not only is polyester insulation great at keeping hot air in your home in winter, and out of your home in summer, but it also provides great acoustic benefits. Polyester insulation blocks out a significant amount of noise from outside being audible inside, leaving your home quieter and more peaceful. 

Polyester Insulation is Simple to Install

You won’t need lots of PPE or equipment to safely and correctly install polyester bats. The standard measurements suit more than 90% of homes, and can also be ripped or cut to fit into different spaces. You can install them yourself and it will be safe to do so, but keep in mind that an expert is going to have a lot more knowledge. 

Understanding how to insulate different areas, how to use passive design, and how to combine insulation types when required are all advantages that an insulation installation specialist will have over DIY installers. 

It is vital that insulation is installed with as little gaps as possible. Some insulation installers, like ECO Home Insulation, even offer warranty guarantees on the performance of their insulation, so you can be sure of the high quality of their work. 

Polyester Insulation is Eco-friendly

Insulating your home is environmentally friendly in the first instance because it helps keep electricity usage from heating and cooling to a minimum and conserves energy. Polyester batts, because they are made from up to 85% recycled material and are fully recyclable, are one of the most eco-friendly insulation options on the market. 

How Does The Price Point Compare To Other Insulation Options?

Polyester insulation typically sits at the higher end of the price scale for insulation, although of course this varies from manufacturer to manufacturer. This higher price point has to do with many of the factors we have discussed, such as its ability to remain hypoallergenic, and its recycled make-up. 

Because polyester insulation doesn’t “breathe” the way that some other fibre types do, they are completely impenetrable to dust mites, mould, and other potential allergens. This further brings the price point up a little. 

Ultimately, the price per square metre for polyester insulation will depend on your home and your insulation needs.

Polyester Insulation Performance

Polyester insulation tends to sit around the performance standard for insulation. This is measured using a system called R-Value. This measures how effective insulation is at keeping the heat in and out. This ability to minimise heat transfer is how insulation keeps your home temperate in both warm and cool conditions. 

The higher the R-Value of your insulation is, the better it will be at this function. Different polyester insulation products may have different R-Values, and it’s important to consider this when selecting your insulation. A higher R-Value is going to provide more effective insulation and a lower energy bill. 


Polyester insulation comes with a range of fantastic benefits. It’s also made from a high percentage of recycled material and completely recyclable after use, making it an excellent eco-friendly choice. 

If you’re interested in polyester insulation and would like to arrange a free quote and measure, contact us today.

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