Which Insulation is best for Soundproofing my Home?

Which insulation is best for soundproofing a home

The most common material to use in soundproofing your home is either glasswool or polyester acoustic insulation batts.  Glasswool also known as fibreglass is made from recycled glass material and polyester is made from recycled plastic bottles. Polyester tends to be more expensive however as it has no breathable fibres it is said to be completely ‘itch free’. On the other hand, Glasswool has greatly improved over the last few decades with regards to its itch-factor and many installers also claim it much more pleasant to handle. Glasswool insulation also has a higher compression factor which assists in the delivery and storage these products.

Why invest in acoustic home insulation?

Noise pollution can be a problem if you live in the busy metropolitan areas. Installing acoustic insulation can help maintain noise levels at an appropriate level within the home. Remember that both acoustic and bulk (thermal insulation) provides the same thermal insulating qualities. The difference lies in the density of the insulation batt, with acoustic insulation batts being denser for increased sound absorption.

Popular Acoustic Insulation Products

Knauf Earthwool Sound Shield

Earthwool is manufactured from up to 80% recycled glass material and has a new ECOSE binder which has no added formaldehyde and made from renewable bio-based materials. Earthwool Sound Shield insulation batts are rigid and firm and do not sag when installed. In addition, these insulation batts are non-combustible and come with a 50 year product warranty. Sound shield acoustic Insulation can be installed in your ceiling, internal and external walls and between floors in a double storey home. It is available in; R1.9 (75mm thickness), R2.0HD (75mm thickness), R2.5HD (90mm thickness) R2.7HD (90mm thickness).

Fletcher Pink Soundbreak Batts

Manufactured in Australia, Pink Soundbreak batts are softer to touch than other traditional glasswool products. These insulation batts are non-combustible and backed by a homeowner lifetime warranty. Pink Soundbreak batts can be installed in residential internal and external walls, ceiling and sub-floor in a double storey home. Available in R1.7 (60mm thickness), R2.0 (70mm thickness), R2.5 (90 thickness), R2.7 (90 thickness) and R3.1 (110 thickness).

Bradford Soundscreen Insulation

Soundcreen insulation provides your home with premium thermal and soundproofing properties. It can reduce noise transfer between rooms and from external sources. This product has a partnership with National Asthma Council Sensitive Choice as it is low allergen and approved for use in homes of people with asthma and allergies. Soundscreen can be installed in the walls, floor and ceiling of your residential home, and has a 70 year product warranty attached. Available in R1.7 (60mm thickness), R2.0 (70mm thickness), R2.5 (88mm thickness), R3.1 (110mm thickness).

Greenstuf Polyester Sound Solution

Manufactured from a minimum of 50% previously recycles fibre (PET plastic), Greenstuf has a durability warranty of 50 years. Greenstuf Sound Solution is an effective sound absorber and can effectively reduce loud voices to a quiet murmur. These acoustic insulation batts can reduce airborne sound, impact noise and noise transfer. Applications include internal and external walls and between floor of a home. Sound Solution batts are available in R1.5 (75mm thickness), R2.0 (90mm thickness) and R2.5 (100mm thickness).

Where should I install acoustic insulation?

Installing acoustic insulation in your home can absorb as much as 75% of sound vibrations, creating a quieter space to relax in. You can install acoustic insulation in the following places;

  • External Walls – to soundproof against outside noises such as traffic, loud neighbours, aircraft, dogs barking etc.
  • Internal walls – to reduce noise transfer between rooms.
  • Between floors – to create quiet zones in your home and reduce noise transfer through the mid-floor of a multi-storey building.
  • Ceilings – to minimise exterior noises, especially if you are directly under a flight path.

Choosing the right soundproofing home insulation?

Before ordering your acoustic insulation, check the cavity depth and stud width you will be working with. Acoustic batts are available in anything from 70mm up to 110mm and stud widths are usually 430mm or 580mm. Ensure you have measured the area and know the m2 coverage. Then decide whether you prefer polyester or glasswool insulation. Choose an R-value that corresponds to the area in which you would like to insulate and your geographical location.

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