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Noise pollution can be damaging to human health in various ways. According to World Health Organisation (WHO) research, it affects sleep, social productivity and may even lead to hearing loss1. 

Acoustic floor insulation significantly reduces the impact of noise on building occupants, by cutting sound transfer between neighbouring spaces. Installed on the first floor or intermediate floors of separating flats or offices in the same property, it creates a more comfortable living or working environment.

Find out more about the benefits and applications of ROCKWOOL acoustic flooring solutions today. 

Why do we need Acoustic Floor Insulation?

Acoustics are an important consideration in all building designs, whether a new build or renovation. It is vital to limit the impact of outside disturbances, such as traffic, as well as ensuring that occupants’ activities do not affect neighbouring dwellings.

One in five people are exposed to sound levels at night that may seriously damage their health2. A good acoustic floor solution both dampens sound transfer leaving the room, and reduces noise entering it.

For example, with a floating screed system, resilient material placed under the dry laid or poured screed can greatly reduce impact and airborne transmission. 

 

Key benefits when installing stone wool products include:

  • Strong impact and airborne sound insulation
  • Fire resilience and thermal properties
  • Quick and easy installation

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Floating floors have a high potential for reducing disturbance caused by impact and airborne noise in dwellings, as effective insulation greatly reduces vibration transmission through structures. 

 

The acoustic performance of an additive layer (floating floor and ceiling) is quantified in terms of:

  • Reduction of impact sound noise - ΔR expressed in dB.
  • Improvement of airborne sound insulation – ΔR expressed in dB. 

 

The amount of acoustic floor insulation required depends on the size of the floor where it is being installed. Measuring the surface provides the best indicator of how much is needed.

For under screed applications the stone wool resilient insulation layer can vary from 25 – 50mm depending on the slab, screed and load imposed on the floor. High density products are used for this.

In the case of timber or metal joist floors, slabs and rolls are used to fill the cavity (filling two-thirds or three-quarters of the cavity being common practice). Due to its absorption properties, stone wool reduces the cavity resonance – enhancing airborne sound insulation. Medium and low-density products are used for this application. 

The primary aim of this is to reduce noise transfer, which can help improve productivity by making the indoor living or working environment more comfortable. 

Due to their material properties, however, all ROCKWOOL products also boast strong thermal properties. These can improve the energy efficiency of a room – saving on heating and cooling costs.

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Using ROCKWOOL products, you can reduce the perceived noise level coming from floor impacts above – like footsteps or furniture movements – up to a factor of eight.

Riccardo Gandolfi

ROCKWOOL Acoustic Knowledge Manager
To be updated
PDF
1.2 MB

Good growth, Quiet Buildings Report

To be updated
PDF
17.2 MB

ROCKWOOL Red Book

To be updated
PDF
19.0 MB

Renovation Case Study Booklet

To be updated
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1.2 MB

ROCKFLOOR Datasheet

To be updated
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3.0 MB

FLEXI Datasheet

Financial support

Check the Energy Savings Trust website to see whether there are any financial support schemes available for acoustic floor insulation.

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FAQs

FAQs

What floor solutions do ROCKWOOL Group offer?

Our insulation products are designed to enhance thermal performance in ground floor constructions, as well as offering separating and intermediate floor solutions. Stone wool is effective at reducing heat and noise transfer between neighbouring spaces.

What are the benefits of ROCKWOOL floor insulation?

In addition to its thermal properties, our insulation softens the effect of impact sound and airborne sound. ROCKWOOL insulation also offers high levels of fire protection, as it is non-combustible.

Does the fibrous nature of your products help with soundproofing?

ROCKWOOL insulation is designed to enhance sound attenuation through floors, reducing sound transfer. This therefore contributes towards soundproofing – as this is the process of keeping sound contained in a space, preventing transfer from one part of the building to another.