Skip to main content

Bring some peace and quiet home

CosyWall Acoustic is blown into your internal walls to soak up the noise between rooms — voices, music, TVs and traffic — for a calmer, more private home.

Insultech Waikato Acoustic Insulation Service
Improved sleep

Improved sleep

Less noise between rooms keeps bedrooms quiet and restful.
Enhanced focus

Enhanced focus

A calmer space for working and studying from home.
Better privacy

Better privacy

Conversations and media stay in the room they belong to.
Adds value

Adds value

A quieter, better-performing home appeals to future buyers.
Why it works

No gaps means no noise leaks

Traditional acoustic batts can leave gaps where sound sneaks through. Blown insulation is injected into the wall cavity, filling every crack for a seamless sound barrier.

Its density makes it exceptional at absorbing airborne noise — conversations, music and street sounds — and it helps damp vibrations within the wall too.

As a bonus, it also adds thermal performance: quieter and warmer.

How CosyWall reduces noise between internal walls

A little sound science

Under 40dB is the sweet spot for a peaceful home. Here’s what you’re up against.
30dB

A whisper

The quiet end of the scale — where bedrooms should live.
60dB

A conversation

Airborne sound like voices and TV travels straight through uninsulated walls.
80dB

A busy street

Constant exposure is tiring — good insulation takes the edge off.
Airborne sound (voices, music, traffic) is where CosyWall Acoustic shines. Impact sound — footsteps, slamming doors — travels through the structure and may need additional measures; we’ll advise honestly on what will and won’t help.

Ready for a quieter home?

Tell us which rooms are the problem — we’ll recommend the right acoustic fix.

Our other products

CosyWall Thermal

Loft Insulation

Warmafloor

Trufill