Wondering if Rockwool insulation is the way to go with your soundproofing project? Read on to learn more about Rockwool as a sound insulation material. 

For builders working on lofts, apartments or any other building, ensuring there is good sound insulation is very important. Luckily, there are several materials builders can use today for sound insulation. While this is a blessing, it’s also a curse. Why is this? Well, the process of identifying an ideal or the best sound insulating material has become hard. To help you narrow down on the best insulating materials, we’ll be looking at Rockwool. In particular, we’ll look at Rockwool insulation and whether it’s good for soundproofing.

What is Rockwool Material?

Before answering whether Rockwool insulation is good or not for soundproofing, let’s first look at it as a material. So what is it? Just by going by its name, you can tell that this material is made from rock fibres. These rock fibres are non-directional in nature. This makes it possible for Rockwool to trap airborne sound more effectively. It also boasts a very thick density that makes it extra tough. In fact, if you were to fire a blowtorch at it for an extended period, you’ll note that it will only just glow.

It is also important to note that Rockwool main use is not so much sound insulation. In fact, its main use is filling up spaces found in stud walls. It is important to fill these spaces as they are known to produce bad resonances. In addition to this, it is good to note that Rockwool as a material is very dense. This density makes it ideal for two things, sound insulation and fire prevention. I would like to touch on its fire prevention qualities a bit given that we’ll highlight Rockwool insulation capabilities later on.

Rockwool’s density allows it to slow the passage of fire. In other words, it helps in preventing the spread of fire. Furthermore, it is non-combustible and this also goes to slowing significantly the path of the fire. In fact, you can take a blowtorch and fire away at it and the fire won’t spread. The only thing that will happen is it glowing.

Is Rockwool Insulation Good For Soundproofing?

Now that we have a slight clue of what Rockwool is it’s time to focus on its use an insulator. As already mentioned, Rockwool is very dense. This density, combined with other factors, makes it an ideal sound insulation material. This, however, doesn’t mean you can just go about using any type of Rockwool for insulation. Why? Well, there are many different versions of it with different unit masses.

Using just about any Rockwool slab is a common mistake with many builders. This is especially true when thinking of Rockwool insulation. As a builder using Rockwool, it is important to know that its main use is no so much sound insulation. Rockwool’s main purpose is filling up spaces found in stud walls. Therefore, some might not work so well if used as a sound insulation material. With this in mind, it is important that you use the right type of Rockwool insulation.

If you are having difficulties settling on an ideal Rockwool insulation material, it is advised to seek advice. Regardless of your neighbourhood, you can guarantee that you’ll find a business that specializes in soundproofing. Get to talk to them and seek advice or help on how to best work with Rockwool insulation. One such business if you are in the Adelaide South Australia area is The Silencer.


When going for Rockwool insulation, try as much as possible to go with new materials. Old Rockwool isn’t builder friendly. In fact, you might end up spending weeks if not months working on and finishing your project. Modern Rockwool, on the other hand, is super easy to easy, thus the reason why we advise using it.   

If you happen to have questions touching on Rockwool insulation do contact The Silencer. They do have a team of experts who’ll give you expert advice and help on how to deal with it. Furthermore, they can assist you with all your Rockwool insulation projects.

You can contact one of their representatives by dialling 0468 356 600. There is also an option of sending them an email. For this you’ll need this email address info@thesilencer.com.au.