Acoustic Wall Insulation

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Acoustic wall insulation helps reduce sound transfer through both internal in external walls residential and commercial properties, in order to enrich modern living.

It promotes comfort and privacy, protecting people from ‘outside-to-inside’ noise such as traffic, and ‘inside-to-inside’ noise from neighbouring dwellings.

For many years noise has been considered a ‘pollutant’, potentially causing psychological and other health effects. Our solutions can effectively reduce its impact on your building or project.

We offer a range of applications:

Partition walls – stud walls separating spaces within a property.
Party walls – cavity walls, plasterboard walls, lining on base wall; offering protection between dwellings.
Cladded and ETICS Façade – insulation installed in façade systems with external (ETICS) or internal lining.

Read on to discover more about the benefits of ROCKWOOL products today.

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Why do we need acoustic wall insulation?

Quality, properly installed acoustic wall insulation can greatly limit noise transfer – from the outside environment, between properties and even within the same office or domestic space.

Unwanted noise entering homes from the outside environment and adjacent dwellings can cause sleep disturbance, potentially leading to other health risks. Acoustic wall systems lower the levels of noise exposure to create a more comfortable living environment.

Healthier buildings can have a positive impact on office workers too. Reducing the impact of outside noise and loud neighbouring offices may improve productivity and employee health¹.

Key benefits of our insulation include:

Protection against internal and external noise
Easy to install across different systems
Enriched modern living, through enhanced comfort and privacy

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The amount of insulation required will depend on the type of wall, its surface area and the thickness of the cavity being insulated – where relevant.

With acoustic insulation for stud walls, measure the wall size for an indication of how much you need, choosing a density that suits your soundproofing requirements and the size of the gap.

When insulating a cavity wall, measure the gap and wall size for the best indication of how much insulation you need.

Use our ROCKWOOL RT60 Calculator to determine the acoustic performance of the building’s walls, and estimate the acoustic delay value (echo). For more details on technical specifications, visit our ROCKSPEC Specification Toolkit.

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Why choose ROCKWOOL solutions?

Our range of ROCKWOOL products include acoustic panels, rolls, slabs and granulateproviding an effective sound absorption of the cavity resonance for plasterboard, party or stud walls.

Benefits include³:

Strong sound insulation of the system
Sustainability
Robustness for various applications

Fire resilience and water repellence offer additional advantages too.

In a cavity wall, ROCKWOOL insulation offers high absorbing properties that eliminate the resonance of the empty cavity. This improves the overall acoustic performance. Rigid or semi-rigid panels ensure the cavity is fully filled with no gaps.

Meanwhile, filling the cavity of a plasterboard partition wall with ROCKWOOL insulation can help improve the airborne sound insulation significantly – by 8 or 10 dB.

Filling the lining cavity of party and external walls with high-absorbing ROCKWOOL insulation can decrease the radiated sound from a base wall.

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By introducing sound-absorbing material to fill the cavity, it is possible to mitigate the effect of cavity resonance that badly affects the acoustic performance of the wall.

Riccardo Gandolfi

ROCKWOOL Group, Acoustic Knowledge Manager

Applications

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Installation

There are various installation methods available for different acoustic wall systems.

Rigid or semi-rigid boards can be applied with a stud wall. Acoustic boards for walls can be placed on the inside of internal walls with a plasterboard finish.

When insulating a cavity wall, measure the m² of the walls – taking out the size of windows and doors.

This gives an accurate indication of how much insulation in the form of batts, slabs or granulate you need.

Key tips⁴:

Use a registered installer – to check your walls and suggest the best insulation material and installation method to use.
Choose the best material – consider the type of wall and whether it is protecting against internal or external noise for the most appropriate insulation.
Measure your walls – accurately size up the walls being insulated and factor in some extra material.

Inspiration and guides for professionals

Get 16 renovation cases

This case study bundle includes:

29 pages of our best 2018-19 projects
Acoustic renovation in both public buildings and private
Bringing new life into old buildings with facade panels
Improving fire safety and wellbeing in high-rises and historical buildings
Reducing noise and flooding with innovative stone wool solutions

Sustainability and energy efficiency

ROCKWOOL products can be indefinitely recycled, helping create a circular business model⁵. They are all designed to last the lifetime of a building, reducing building waste and forming highly sustainable solutions.

Acoustic wall insulation helps promote indoor comfort – and reduces exposure to noise pollution.

Thanks to stone wool’s thermal properties, it can naturally improve a building’s energy efficiency too.

8 facts about the circularity of stone wool