25mm Acoustic Mineral Wool Slabs – 60kg/m³

Professional Sound Absorption for Space-Constrained Builds

SilentCloud™ Acoustic Infill for Walls, Floors & Ceilings

Professional Acoustic Control Where Space Is Limited

SilentCloud™ 25mm Acoustic Mineral Wool Slabs (60kg/m³) are engineered for effective airborne sound absorption in applications where cavity depth is restricted and performance cannot be compromised.

Unlike generic mineral wool products developed primarily for thermal insulation, SilentCloud slabs are purpose-designed for acoustic control. They deliver reliable, predictable performance within stud walls, floors, ceilings, and lining systems, reducing the transmission of speech, television, music, and general airborne noise.

Manufactured using acoustically optimised mineral fibres, these slabs are suitable for residential soundproofing, commercial fit-outs, studios, offices, and refurbishment projects where professional results are required within limited build-ups.

Why SilentCloud™ Delivers Superior Acoustic Performance

Acoustic-Optimised Density – 60kg/m³

The carefully engineered density targets mid- and high-frequency sound absorption, outperforming lower-density mineral wool products adapted from thermal applications.

Slim 25mm Profile

Designed for installations where space is at a premium, including:

• Resilient bar systems

• Acoustic wall and ceiling linings

• Ceiling voids with restricted depth

• Stud walls requiring minimal build-up

Open Fibre Structure

The open fibre matrix converts airborne sound energy into heat through internal friction, reducing reverberation and sound transfer within cavities.

Consistent, Predictable Results

Uniform slab density ensures reliable acoustic behaviour across the entire installation, a critical requirement for professional soundproofing systems.

Fire Safety & Regulatory Compliance

• Euroclass A1 Fire Rated (Non-Combustible)

• Suitable for Part E compliant constructions

• Approved for use in residential, commercial, and public buildings

• Does not contribute to flame spread or toxic smoke generation

Installation & Handling

SilentCloud slabs are designed for efficient, clean installation by both trade professionals and competent DIY installers.

• Easily cut with a serrated insulation knife

• Friction-fit installation holds slabs securely in place

• Maintains shape without sagging or slumping over time

• Compatible with timber and metal stud frameworks

Standard PPE is recommended during installation (gloves, mask, long sleeves).

Typical Applications

• Stud and partition walls

• Intermediate timber floors

• Suspended ceilings

• Home cinemas and media rooms

• Offices and meeting spaces

• Music practice rooms

• Flats and HMO sound upgrade projects

Product Specifications

Acoustic Performance Guidance

While 25mm slabs are not intended as a standalone soundproofing solution, they play a critical role within multi-layer acoustic systems.

They are highly effective when combined with:

• Acoustic plasterboard

• Resilient bars

• Double-stud or staggered stud constructions

• Acoustic membranes

Used correctly, SilentCloud slabs reduce cavity resonance and significantly enhance overall system performance.

Frequently Asked Questions

Is 25mm acoustic mineral wool effective?
Yes. The 25mm format is ideal where space is limited, particularly in ceilings and lining systems. For higher sound reduction targets, thicker slabs should be used where cavity depth allows.

Is this product designed for sound or thermal insulation?
SilentCloud is engineered primarily for sound absorption, with secondary thermal benefits.

Is it safe for use in homes?
Yes. The product is non-combustible, fibre-stable, and suitable for residential environments.

Can it be used in ceilings?
Yes. It is commonly installed above plasterboard ceilings to reduce airborne noise transfer between floors.

SilentCloud™ Quality Assurance

SilentCloud products are developed specifically for professional acoustic applications, delivering predictable performance, regulatory confidence, and long-term stability.

If you require guidance on selecting the correct thickness for your project, our acoustic specialists are available to advise.