How to choose soundproofing materials: a practical guide without myths

What is the best material for soundproofing a wall or apartment?

Most people expect a single product that solves the problem. In reality, there is no “magic” soundproofing material.

Soundproofing always works as a system. Different materials perform different roles:

some absorb sound

some block it

others reduce vibration

To choose the right solution, you need to understand how these layers work together.

What Materials Are Used in Soundproofing

1. Absorptive Materials (Sound Absorption)

Purpose: reduce echo and internal resonance

Soft, fibrous materials such as:

mineral wool

fiberglass

cellulose

recycled textile fibers

These materials:

absorb sound waves

reduce reverberation

improve acoustic comfort inside the structure

However:

They do not block sound between rooms

2. Mass Materials (Sound Blocking)

Purpose: prevent sound transmission

This includes:

dense panels

gypsum boards (drywall)

multilayer constructions

The principle is simple:

The heavier and denser the system, the harder it is for sound waves to induce vibration in the structure.

In Sonotiz systems, this function is performed by:

high-density panels such as SONOTIZ BLOCK

multilayer wall, ceiling and floor assemblies

3. Damping Materials (Vibration Control)

Purpose: reduce structural vibration

When sound reaches a wall, the surface begins to vibrate and can act as a secondary sound source on the other side.

In simple terms:

The less the wall vibrates, the less sound it transmits.

Damping layers:

dissipate vibration energy

reduce resonance

increase the effectiveness of the entire system

4. Sealing (Airtightness)

Purpose: eliminate sound leaks

Even a small gap can significantly reduce soundproofing performance.

A simple analogy:

If you build a perfectly waterproof bathroom but leave a small gap, water will still find a way through. Sound behaves the same way.

Critical weak points include:

electrical outlets

pipes and service penetrations

ventilation openings

wall-to-floor and wall-to-ceiling joints

These are known as acoustic bridges or flanking paths.

Why One Material Does Not Work

One of the most common mistakes is expecting a single product to solve the problem.

For example:

acoustic foam reduces echo but does not block sound

a dense panel without sealing gives limited results

insulation without mass does not protect against neighbour noise

Is There a “Universal” Soundproofing Material?

Many people are looking for a “soundproofing miracle solution”.

In practice, some materials combine several properties.

For example, SONOTIZ AT is a high-density acoustic and thermal mat made from pressed E-glass fibers with a protective polymer layer.

It combines:

surface density (mass)

elasticity (vibration control)

multilayer structure

This allows it to reduce both airborne and impact noise while also improving thermal performance.

However, even such materials:

Deliver the best results only when used as part of a complete soundproofing system.

How an Effective Soundproofing System Works

Real soundproofing performance comes from combining layers:

Absorption – inside the structure

Mass – to block sound

Damping – to reduce vibration

Sealing – to eliminate leaks

This system-based approach is the foundation of Sonotiz solutions.

Which Sonotiz Systems to Choose

Depending on the project, different system levels are used.

For walls:

SonoFrame Essential – basic sound insulation

SonoFrame Advanced – for apartments and offices

SonoFrame Pro – for higher acoustic requirements

For limited space:

SonoSlim Essential / Advanced – compact solutions

Complementary materials:

vibration isolation tapes

mounting elements

acoustic adhesives

installation accessories

All components are designed to work together as a system - not as separate products.

How to Choose the Right Solution

Ask yourself three key questions:

What type of noise do you have?

voices, music → airborne noise

footsteps, vibration → structure-borne noise

Is it renovation or new construction?

new builds allow full system integration

renovations often require compact solutions

Are there thickness limitations?

thinner systems save space

multilayer systems provide higher performance

Faq

1. What is the best material for soundproofing?

There is no single best material. Effective soundproofing is a combination of mass, absorption, damping and airtight sealing.

2. What is better: mineral wool or dense panels?

They serve different functions:
– mineral wool absorbs sound
– dense panels block sound
The best result comes from combining both.

3. Can I soundproof a wall with just one layer?

You can improve the situation, but not solve it completely. Effective soundproofing requires a multilayer system.

4. What is the best all-in-one soundproofing material?

There is no fully universal solution. Materials like SONOTIZ AT combine several properties and can significantly improve performance, but they still work best as part of a system.

5. Why can I still hear neighbours through a thick wall?

Sound often travels through:
– outlets
– ceilings and floors
– joints and connections
This is called flanking transmission.

Sooo….

Soundproofing is not about choosing a material - it is about designing a system.

The best results are achieved when:

each layer has a clear function

the structure is correctly assembled

all weak points are properly sealed

That is why professional soundproofing solutions are always built as systems — not as individual materials.

Need Help Choosing the Right System?

Our specialists are here to guide you — whether you’re planning for a new build, renovation, or technical installation. We’ll help select the best acoustic system for your facility and budget.