Maximum acoustic performance meets thermal muscle. Shop Fletcher's Pink Batts R3.1 Sound Break at Melbourne Insulation Online - Melbourne's local insulation experts - and deliver the ultimate in noise reduction and energy efficiency in a single product.

Where the R1.7 Sound Break is the go-to for internal wall acoustic treatment, R3.1 Sound Break steps it up — bringing a significantly higher thermal R-value to the table without sacrificing the superior acoustic performance Sound Break is known for. For builders and designers who demand a quiet home and an energy-efficient one, R3.1 Sound Break is the answer.

What is R3.1 Sound Break? Fletcher's Pink Batts R3.1 Sound Break is a premium high-density glasswool acoustic insulation batt engineered to deliver outstanding sound absorption alongside genuine thermal performance. The increased R-value makes it suitable not just for internal partition walls, but for external walls, floor and ceiling assemblies, and acoustic-critical applications where thermal performance is also a compliance or comfort requirement.

Where Does R3.1 Sound Break Perform Best?

The higher density and increased R-value of R3.1 Sound Break make it the preferred specification for applications where both acoustic and thermal performance. 

• External walls - where street noise, neighbouring traffic, and thermal performance must be managed simultaneously
• Bedrooms on external walls - block outside noise and maintain thermal comfort through Melbourne's cold winters and hot summers
• Sub Floor and ceiling — reduce impact and airborne noise transmission between storeys in townhouses, apartments, and split-level homes
  
• Home theatres and music rooms -  where sound containment is the goal
• Commercial and office fitouts - for meeting room walls, executive offices, and open-plan acoustic zones
• Renovations on busy Melbourne streets - inner-city and suburban homes where road and tram noise is present

Why Fletcher's R3.1 Sound Break?

✅ Premium high-density glasswool - engineered for maximum sound absorption and thermal resistance

✅ Achieves superior Rw (weighted sound reduction) ratings that significantly outperforms standard batts of equivalent thickness

✅ R3.1 thermal rating - suitable and compliant for external walls 

✅ Made in Melbourne - safe, non-combustible and built to last with a Lifetime Warranty

✅ Itch-free formula for faster, more comfortable installation on the job

✅ Pre-cut to fit standard timber and steel stud wall frames

✅ NatHERS & CodeMark certified for full NCC compliance

R3.1 Sound Break in Multi-Residential Construction Melbourne's booming townhouse, duplex, and apartment market specify acoustic solutions that go beyond the basics and R3.1 Sound Break is built for exactly that. With NCC acoustic compliance requirements tightening for sole-occupancy unit separations, specifying R3.1 Sound Break in party walls, external facades, and floor/ceiling assemblies gives builders and developers a reliable, well-documented pathway to compliance without expensive or complex wall system upgrades.

Commonly paired with acoustic rated plasterboard, resilient mounts, and decoupled ceiling systems for complete acoustic wall and floor assemblies in multi-residential projects across greater Melbourne.

Sound Break Range — Which R-Value Do I Need?

Not sure which Sound Break product suits your project? Talk to the MIO team — we work with Melbourne builders and architects every day and can help you nail the right acoustic specification first time.

Shop Local with MIO MIO stocks Fletcher's Pink Batts R3.1 Sound Break ready for same-day pickup or fast local delivery across metro Melbourne and surrounding suburbs. From single-lot townhouse builds to large multi-residential developments, our team understands acoustic specifications, NCC compliance, and how to get the most out of every product in the Sound Break range.

Premium acoustics. Real thermal performance. Shop R3.1 Sound Break at MIO today!