Comparing And Contrasting Earthwool And Glasswool Insulation

As a contractor or owner builder, it’s important to know the different options you have when it comes to insulation. Distinguishing the differences between Earthwool and glasswool insulation, for example, can make all the difference to your project. Today, we’re explaining the similarities and differences between glasswool and Earthwool insulation to help you make this decision.

 

What is glasswool insulation?

Molten liquid glass (which is made from sand, silica and at least 60% recycled glass) is spun and pulled through a fine mesh to make glasswool. It is held together by a binding agent and layered until it looks like wool – hence the name. This kind of insulation is also known as fibreglass insulation because of the fact that it is made from glass.

Glasswool is a great form of insulation because it traps air between its fine glass fibres, limiting and even stopping airflow. Because it is not a great conductor of heat, any heat that passes through it is trapped and nullified in an air pocket.

The effectiveness of glasswool insulation can vary depending on the manufacturer, however, there is a way to tell just how good the insulation really is. Its insulation R-value, which will typically be displayed on the packaging, gives you an indication of this. A good rule of thumb to keep in mind is that the higher the R-value is, the more effective it is at insulating.

 

What is Earthwool insulation?

The first thing you should know about Earthwool insulation is that Knauf Insulation is the sole owner and manufacturer of the patented ECOSE Techonology that is used to produce Earthwool. In short, Earthwool is a single, specific product – not a general category of insulation.

In fact, Earthwool is actually a type of glasswool that is mainly made from recycled glass using ECOSE Technology. The main points to note about ECOSE Technology include:

  • It uses renewable bio-based materials as opposed to petrol-based chemicals
  • It contains no added formaldehyde, which is often used as a binding agent for other forms of insulation
  • There are no added bleaches, dyes or artificial colours – Earthwool has an earthy brown, natural tone.

The benefits of Earthwool are similar to those of glasswool, however there are a few key differences between the two. To figure out how effective your Earthwool is at insulating, simply check its R-value.

 

Similarities between the two

Because Earthwool is a variation of glasswool, there are many similarities between the two products. These are the main similarities between traditional glasswool and Earthwool insulation:

  • Both products protect against mould growth and bacteria build-up, as they do not absorb the dampness and moisture in the atmosphere (i.e. they are non-hygroscopic).
  • Both glasswool and Earthwool are incombustible, which improves the fire safety of the building and its structures.
  • Both products are light, yet strong, and fairly easy to install.
  • Both glasswool and Earthwool are predominantly made from recycled glass.
  • Glasswool and Earthwool are both good acoustic insulators, meaning they both absorb sound to a certain degree. However, it is important to note that if soundproofing is a priority for your project, you may have to opt for more dense forms of insulation.

 

Differences between the two

These are the main differences between traditional glasswool and Earthwool insulation:

  • Glasswool can cause skin irritation (especially for those with sensitive skin) due to its rough itchy texture. In contrast, Earthwool is softer to the touch. While you should be wearing gloves anyway when installing your insulation, the non-itchy texture of Earthwool can make the installation process easier.
  • Glasswool may contain added formaldehyde, while Earthwool does not. While this isn’t unsafe (the formaldehyde levels in glasswool are monitored in Australia to protect peoples’ health and safety) it may be something to consider for clients who prefer an eco-friendlier process.

 

Buy insulation today

If there’s one area of your building project you shouldn’t compromise quality, it’s insulation. It’s common knowledge that insulation keeps the home warm in winter and cool in summer, and can save up to 80% in heating and cooling losses. This means homebuyers and homeowners will be saving money from their energy-efficient home in the long run.

Insulation Essentials have the quality products you need for your project. Our glasswool and Earthwool insulation solutions are cost-effective with fantastic thermal performance. All of our products are sold online, making the buying process an easy and convenient one. Simply browse our online store or call us on (03) 8339 7111 to find out more.