Your Essential Guide to Soundproofing Materials

Mastering Silence: Your Essential Guide to Soundproofing Materials

Have you ever been jarred by the clamor of traffic, the buzz of appliances, or the chatter from the next room when all you wanted was a moment of peace? Selecting the right soundproofing materials can transform your space into a bastion of tranquillity. This guide delves into the depths of soundproofing, helping you to understand and choose materials that fit your specific needs.


The Quest for Quiet: Why Choose the Right Material?

Soundproofing is an art that marries material science with the quest for silence. Each material has unique properties, addressing different sound frequencies and installation environments. Here’s how to navigate these options:

Dense-Pack Cellulose: The Eco-Friendly Sound Barrier

Cellulose insulation stands out for its excellent noise-reduction capabilities and environmental benefits. The dense-pack technique offers high STC, IIC, and NRC ratings, meaning this material is good for your space and the planet [1].

Mineral Wool: Dense and Sound-Resilient

With its impressive ability to dampen noise, mineral wool or rock wool offers a premium choice for those seeking to enhance their soundproofing measures. It balances acoustic performance and thermal insulation [2].

Fibreglass: Blocks some Noise with Careful Handling

While fibreglass insulation is widely available, it requires careful handling due to its fibrous composition. Its sound-absorbing qualities make it a worthwhile option for projects where airborne noise is the only concern, as its other ratings are subpar compared to alternative acoustic insulations [3].

Spray Foam: Fills Gaps but Falls Short on Silence

Spray foam excels in sealing nooks and crannies for thermal insulation. However, other materials perform much better in terms of soundproofing. It’s a versatile tool for keeping your space warm, but not the star player for sound reduction for any noise type [4].

Material STC Rating IIC Rating NRC Rating
Cellulose 49 to 70 44 to 60 0.80 to 0.90
Mineral Wool 34 to 52 46 to 51 0.90 to 1.0
Fibreglass 33 to 39 Subpar 0.65 to 0.7
Spray Foam 29 to 34 Subpar 0.7 to 0.75


Beyond Insulation: Enhancing Soundproofing Effectiveness

Insulation is just one aspect of soundproofing; additional acoustic products can be combined to strengthen barriers against unwanted noise. First, it is important to identify the type of noise you’re trying to reduce, as each product is designed to handle different types of noise.

Acoustic Putty: Sealing the Unseen Gaps

This malleable material is excellent for ensuring that sound leaks are a thing of the past, especially around outlets and small openings where sound often sneaks through.

Mass Loaded Vinyl: The Heavyweight in Soundproofing

Add MLV to your walls, and you add a powerful ally against airborne noise. Its mass helps to block sound waves, making it an essential element in any soundproofing strategy.

Sealants and Compounds: The Final Touch in Soundproofing

Acoustic sealants and compounds, like Green Glue or TECSOUND, play a crucial role in plugging gaps and dampening vibrations, completing the soundproofing ensemble with finesse.

Isolation Clips and Furring Channels: Creating a Sound Buffer Zone

These systems help create a decoupled space, significantly reducing sound transmission between walls and ceilings from impact noises.

Acoustical Gypsum Board: Building Blocks for a Quieter Room

Heavier and denser, these boards go beyond standard drywall to provide an extra sound-dampening layer for airborne noises.

Acoustic Ceiling Tiles: Echo’s Nemesis

Particularly useful in commercial spaces, these tiles absorb sound and reduce echoes, contributing to a more focused and peaceful environment.


SonoPan Soundproofing Panels: Optimal Noise Control

Ideal for enhancing sound insulation, SonoPan panels effectively manage airborne noise. They are easy to install, making them a versatile addition to any soundproofing project.


Acoustic Window Inserts: Clarity in Silence

Designed to fit over existing windows, these inserts effectively reduce external noise, offering tranquillity without compromising on natural light or the view.

Decorative Acoustic Panels: Aesthetic Sound Control

Combining style and sound absorption, these panels enhance any room’s visual and acoustic quality.

Micro-Perforated Acoustic Panels: Targeted Absorption

Ideal for precise sound control, these panels use fine perforations to absorb specific sound frequencies effectively.

Tailored Acoustics: Personalized Solutions Using the Right Materials

Considering the unique challenges of your space is paramount. For instance, a home office might benefit from cellulose and acoustic window inserts to block out neighbourhood noise, while a home theatre may need dense-packed cellulose combined with hidden and decorative acoustic products for the ultimate cinematic experience.


Arming yourself with knowledge is the first step to achieving your desired silence. This comprehensive guide for various acoustical products lets you make informed decisions on soundproofing materials. Our specialists are just a call away for a professional touch to your project.


  1. Understanding STC and STC Ratings – Insulation Institute
  2. Mineral Wool Insulation Pros and Cons – Soundproofing Tips
  3. Fiberglass Insulation: History, Hazards and Alternatives – Building Green
  4. Spray Foam Insulation: The Impact on Sound Transmission – Spray Foam


June 2024