Wall Acoustic Insulation
Internal wall soundproofing
Noise from behind walls effectively hinders daily functioning and above all rest. This problem very often affects apartments in blocks where walls between units are too thin, light or improperly constructed. In such a situation, ensuring silence and acoustic comfort becomes a priority. Insulation systems are also worth using when we want to take care of our privacy, so that sounds of confidential conversations do not reach where they should not.
The best and most effective method of noise reduction and ensuring privacy is improving the acoustic insulation of partitions.
Airborne sound
Sound travels in the form of a wave that hits the wall and causes it to vibrate. The wall then releases some of this energy on the other side, generating unwanted airborne sound. The ability of a partition to retain this energy is defined as airborne sound insulation.
In this case, the wall works similarly to a loudspeaker membrane — the greater its mass, the harder it is to set it in vibration. Therefore, increasing the mass of the partition while maintaining its elasticity is of key importance.
These conditions are met by systems based on materials of very high density, such as rubber granulate panels (over 700 kg/m³). The best effects are achieved by using a so-called acoustic sandwich, i.e. a combination of several layers of different densities, which enables effective sound dampening across a wide frequency range.
Wall acoustic insulation
Wall claddings: Rewall 40, Mustwall 33B, Mustwall 18B
Layered panel for improving the airborne sound insulation of finished (plastered) walls, also with thermal insulation properties.
Rewall 40 panels combine 3 materials of different densities, which is essential for noise reduction.
Acoustic insulation panel 40 mm thick with a sandwich structure consisting of layers:
20 mm polyester wool.
8 mm rubber board made from ELT fibres.
12.5 mm plasterboard.
Panel dimensions: 1.20 m x 1.00 m, rubber board 8 mm at a density of 800 kg/m³; polyester wool 20 mm thick at a density of 100 kg/m³
To complete the system, add a 12.5 mm plasterboard according to the cross-section below.
Applications are wide-ranging: partitions between apartments, hotel rooms, conference halls, offices and many others.
Layer cross-section
| # | Description | thickness (mm) |
|---|---|---|
| 1 | Plaster | 15 |
| 2 | Porotherm 25 P+W | 250 |
| 3 | Plaster | 15 |
| 4 | Isolgomma REWALL 40 | 40 |
| 5 | Plasterboard | 12.5 |
| 6 | Acoustic tape | 3 |
Key benefits
Ideal for renovations
For use in renovations, makeovers and acoustic modernisations
Minimally invasive installation
Minimal interference with the existing building structure
Versatility
Recommended for all wall types: concrete, aerated concrete, ceramic hollow blocks, solid brick, silicate
Easy DIY installation
Material easy to install yourself. We provide written, illustrated and video instructions plus support at every stage
Layered panel for improving the airborne sound insulation of finished (plastered) walls, also with thermal insulation properties.
Mustwall 33B combines 2 materials of different densities, which is essential for noise reduction.
Acoustic insulation panel 33 mm thick with a sandwich structure consisting of layers:
20 mm rubber board made from SBR fibres and granules at a density of 700 kg/m³.
12.5 mm plasterboard.
Panel dimensions are 1.2 m wide, 2.00 m long.
Layer cross-section
| # | Description | thickness (mm) |
|---|---|---|
| 1 | Plaster | 15 |
| 2 | Porotherm 25 P+W | 250 |
| 3 | Plaster | 15 |
| 4 | Isolgomma MUSTWALL 33B | 33 |
| 5 | Plasterboard | 12.5 |
Key benefits
Ideal for renovations
For use in renovations, makeovers and (acoustic) modernisations. Recommended where there is no room for thicker wall acoustic insulation.
Versatility
Recommended for all wall types (concrete, aerated concrete, ceramic hollow blocks, solid brick, silicate).
Easy and minimally invasive installation
Material easy to install yourself. We provide instructions (written, illustrated and video), support and consultation at every stage of the project.
Layered panel for improving the airborne sound insulation of finished (plastered) walls, also with thermal insulation properties.
Mustwall 18B combines 2 materials of different densities, which is essential for noise reduction.
Acoustic insulation panel 18 mm thick with a sandwich structure consisting of layers:
7 mm rubber board made from SBR fibres and granules.
12.5 mm plasterboard.
Layer cross-section
| # | Description | thickness (mm) |
|---|---|---|
| 1 | Plaster | 15 |
| 2 | Porotherm 25 P+W | 250 |
| 3 | Plaster | 15 |
| 4 | Isolgomma MUSTWALL 18B | 18 |
| 5 | Plasterboard | 12.5 |
Key benefits
Ideal for renovations
For use in renovations, makeovers and acoustic modernisations. Recommended where there is no room for thicker wall acoustic insulation.
Minimally invasive installation
Minimal interference with the existing structure — quick and clean implementation.
Versatility
Recommended for all wall types: concrete, aerated concrete, ceramic hollow blocks, solid brick and silicate.
Easy DIY installation
Material easy to install yourself. We provide written, illustrated and video instructions plus support and consultation at every stage of the project.
Partition walls
Solution for improving the airborne sound insulation of finished (plastered) walls, also with thermal insulation properties.
Mustwall 20 rubber granulate panel bonded directly to the plastered wall + frame filled with polyester wool + double layer of plasterboards. Plasterboards can additionally be separated from each other using a rubber hard membrane 3 mm thick at a density of 930 kg/m3, which further improves the acoustic properties of the partition. The frame must be perimeter-decoupled with Stywall expansion tape, preventing rigid connection of the perimeter profiles.
Layer cross-section — Porotherm 25 wall example
| # | Description | thickness (mm) |
|---|---|---|
| 1 | Plaster | 15 |
| 2 | Porotherm 25 P+W | 250 |
| 3 | Plaster | 15 |
| 4 | Isolgomma MUSTWALL 20 | 20 |
| 5 | Isolgomma FYBRO* | 30 |
| 6 | Plasterboard (x2) | 25 |
* in the steel frame cavity
ADVANTAGES:- the wall is load-bearing (can be moderately loaded), - minimal insulation loss when relocating installations (sockets, switches),
Key benefits
Ideal for renovations
For use in renovations, makeovers and acoustic modernisations.
Versatility
Recommended for all wall types (concrete, aerated concrete, ceramic hollow blocks, solid brick, silicate)
DIY installation
Material suitable for self-installation. We provide instructions (written, illustrated and video), support and consultation at every stage of the project.
Features and applications
Wall panel made from ELT fibres. Available in two variants: 10 mm at a density of 800 kg/m³ and 20 mm at a density of 700 kg/m³. Panels 1.2 m long and 1.00 m wide. High acoustic and damping parameters. Designed to provide a high level of wall sound insulation.
Moisture-resistant, dust-free, easy to install, effectively seals and adds mass.
Application:
The panel is ideal as an insulating layer between two walls and as a partition element.
Panels made from polyester fibre at a density of 40 kg/m3. Material supplied in sheets 1.00 m long and 0.6 m wide. Provides thermal and acoustic insulation (airborne sound).
FYBRO is a stable and moisture-resistant product,
unaffected by microorganisms, mould and insects.
Application:
Can be used standalone on lightweight walls
or on masonry walls combined with MUSTWALL line products
Acoustic insulation panel with a sandwich structure
in thicknesses of 30, 40 and 50 mm made from a combination of two materials — polyester wool and a rubber layer made from ELT fibres at densities of 40/800 kg/m³. Panel dimensions are 1.20 m long and 1.00 m wide.
When building a double-layer wall, the mass-spring-mass principle is used — this solution is characterised by high efficiency.
Material designed to combine the mass and elasticity of rubber with the sound-absorbing properties of polyester — an excellent acoustic insulator that also has good thermal properties.
Application:
▪ Acoustic and thermal insulation of masonry walls.
▪ Insulation of cavity walls in reinforced concrete and prefabricated walls.
Solution for improving the airborne sound insulation of finished (plastered) walls, also with thermal insulation properties.
Mustwall 20 rubber granulate panel bonded directly to the plastered wall + frame (5 cm profiles) filled with Trywall 48 material + double layer of plasterboards. Plasterboards can additionally be separated from each other using a rubber hard membrane 3 mm thick at a density of 930 kg/m3, which further improves the acoustic properties of the partition.
The frame must be perimeter-decoupled with Stywall expansion tape, preventing rigid connection of the perimeter profiles.
In the above system, thanks to Trywall 48, we achieve better damping of mid and low frequencies. Trywall material consists of three layers: - polyester wool layer, - rubber layer made from ELT fibres, - another polyester wool layer. Sound loses energy as it tries to pass through all layers.Trywall 48, with its triple density change, is our most effective material for combating nuisance noise.
Layer cross-section — Porotherm 25 wall example
| # | Description | thickness (mm) |
|---|---|---|
| 1 | Plaster | 15 |
| 2 | Porotherm 25 P+W | 250 |
| 3 | Plaster | 15 |
| 4 | Isolgomma MUSTWALL 20 | 20 |
| 5 | Isolgomma TRYWALL 48* | 50 |
| 6 | Plasterboard (x2) | 25 |
* in the steel frame cavity
The thicker the acoustic insulation with materials of different densities throughout the assembly, the better the performance.
ADVANTAGES:- the wall is load-bearing (even cabinets can be hung), - minimal insulation loss when relocating installations (sockets, switches),- greater damping effectiveness for lower frequencies,
Key benefits
Ideal for renovations
For use in renovations, makeovers and acoustic modernisations.
Versatility
Recommended for all wall types (concrete, aerated concrete, ceramic hollow blocks, solid brick, silicate)
DIY installation
Material suitable for self-installation. We provide instructions (written, illustrated and video), support and consultation at every stage of the project.
Features and applications
Wall panel made from ELT fibres. Available in two variants: 10 mm at a density of 800 kg/m³ and 20 mm at a density of 700 kg/m³. Panels 1.2 m long and 1.00 m wide. High acoustic and damping parameters. Designed to provide a high level of wall sound insulation.
Moisture-resistant, dust-free, easy to install, effectively seals and adds mass.
Application:
The panel is ideal as an insulating layer between two walls and as a partition element.
High-performance acoustic insulation protecting against airborne noise. 48 mm panel combining polyester wool facings and a rubber granulate core at densities of 60/800/60 kg/m³. Panels 1.2 m long and 0.6 m wide.
Trywall material consists of three layers: - polyester wool layer, - central rubber layer made from ELT fibres, - another polyester wool layer. Sound loses energy as it tries to pass through all layers.Trywall 48, with its triple density change, is our most effective material for combating nuisance noise.
Depending on the application, the material can provide excellent acoustic efficiency. Applications are wide-ranging: partitions between apartments, hotel rooms, conference halls, offices and many others.
Combining Trywall 48 with Mustwall 20 and building materials guarantees excellent performance.
Dry construction cross-section example:
1. Two plasterboards — 25 mm total thickness.
2. 50 mm profile.
3. Trywall 48 acoustic and thermal insulation panel.
4. 50 mm profile.
5. Two plasterboards — 25 mm total thickness.
Application:
Self-supporting product for use in various lightweight constructions and as a partition element.
Acoustic insulation panel with a sandwich structure
in thicknesses of 30, 40 and 50 mm made from a combination of two materials — polyester wool and a rubber layer made from ELT fibres at densities of 40/800 kg/m³. Panel dimensions are 1.20 m long and 1.00 m wide.
When building a double-layer wall, the mass-spring-mass principle is used — this solution is characterised by high efficiency.
Material designed to combine the mass and elasticity of rubber with the sound-absorbing properties of polyester — an excellent acoustic insulator that also has good thermal properties.
Application:
▪ Acoustic and thermal insulation of masonry walls.
▪ Insulation of cavity walls in reinforced concrete and prefabricated walls.
Leave the installation to specialists
Even the best acoustic insulation will not fulfil its role if improperly installed. In acoustics, precision of execution is key — minor errors or gaps can significantly reduce the effectiveness of the entire system. Therefore, it is worth entrusting acoustic insulation installation to experienced specialists. We approach each project individually, as every building differs in construction, purpose and technical conditions. On this basis, we select the optimal solution, tailored to the area, room function and expected acoustic effect. We also offer the possibility of an earlier visit to the investment site and performing simulations using test pallets. This allows precise selection of materials and technology, thereby guaranteeing the best possible end result.
Have questions or problems with poor acoustic insulation? Contact us by phone or email — we will be happy to advise and propose an effective solution tailored to your needs.
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