When it comes to soundproofing a room or studio, there are a variety of materials to choose from, including fibreglass, acoustic foam, and rock wool. However, one product that has recently gained popularity is the BassBloc Bass Absorber (made from recycled acoustic foam). In this article, we will compare BassBloc Bass Absorber to Rockwool and explore why BassBloc may be the better choice for your soundproofing needs.

Steps involved in recycling of foam

4 reasons to choose acoustic foam sound isolation over Rockwool

1. Quality and Density

BassBloc Bass Absorber is made of a high-quality, dense material designed to absorb low-frequency sound waves. The product is made from recycled high-density acoustic foam, making it eco-friendly and sustainable. BassBloc has a density of 100kg per cubic meter, which means it can absorb a significant amount of sound energy in just 25mm/1 inch thickness. 

On the other hand, Rockwool is a type of mineral wool insulation made from natural rock materials. It is also a dense material, but its density can vary depending on your chosen product. Rockwool generally has a density of around 48kg/64kg per meter cube and needs to be between 50mm-100mm to absorb maximum sound. Occupied 4x wall thickness!!

2. Sound Absorption

Regarding sound absorption, BassBloc Bass Absorber is specifically designed to absorb low-frequency sound waves, which are typically the most difficult to control. The product is designed to trap and absorb the bass frequencies, which can help to eliminate unwanted resonances and improve the overall sound quality of a room.

Rockwool is also a good sound absorber but is typically more effective at absorbing mid-range and high-frequency sound waves. This means that it may not be as effective at controlling low-frequency sound waves, which can be a problem for those looking to create a genuinely soundproof space.

3. Non-Carcinogenic and Sustainable

One of the major benefits of BassBloc Bass Absorber is that it is non-carcinogenic, meaning it does not contain harmful chemicals or materials. This contrasts with Rockwool, which can be a potential health hazard if installed incorrectly. Rockwool contains small fibers that can be inhaled, which can lead to respiratory issues over time.

In addition to being non-carcinogenic, BassBloc is also sustainable and eco-friendly. The product is made from recycled high-density acoustic foam, which reduces waste and helps protect the environment.

Fact 101 - MMT Acoustix recycles more than 120 tons of waste foam every year to produce BassBloc

4. Soundproofing and Weight

In terms of soundproofing, BassBloc Bass Absorber is designed to absorb sound energy, which can help to reduce the amount of sound that escapes a room. While it is not designed to be a complete soundproofing solution, one must add a dense isolation layer like SoundBlanket Mass Loaded Vinyl MLV on the surface before installing BassBloc Bass Absorber. 

4" Wall + Sound reduction in 25mm BassBloc - 15Db

4" Wall + Sound reduction in 25mm BassBloc + 3mm SoundBlanket - 30Db

On the other hand, Rockwool is typically used in higher thicknesses, likely 50mm to 150mm, for effective sound reduction through walls and ceilings. It reduces space which is unlikely and unacceptable nowadays

Finally, when it comes to weight, BassBloc is a lightweight material that is easy to install and manoeuvre. This can be a significant advantage, especially for soundproofing a large space. On the other hand, Rockwool is a heavier material that can be more difficult to work with and needs precautions like gloves and masks while installing. 

Conclusion

BassBloc Bass Absorber is an excellent choice for those looking to control low-frequency sound waves and improve the overall sound quality of a room. It is a high-quality, dense material designed to absorb sound energy and is both non-carcinogenic and sustainable. While Rockwool is also a good sound absorber and can effectively reduce sound transmission through walls and ceilings but it can be a potential health hazard even after covering with fabric.