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Description
SilentCloud™ 75mm Acoustic Mineral Wool Slabs are purpose-engineered for high-performance airborne sound absorption within framed building constructions. Designed specifically for acoustic control rather than generic thermal insulation, these slabs deliver consistent, repeatable results where sound reduction is critical.
Manufactured using acoustically optimised mineral fibres, SilentCloud slabs are intended for use within walls, floors, and ceilings as part of a complete soundproofing system. They are specified by professionals where compliance, reliability, and real-world acoustic performance matter.
This is true acoustic insulation—engineered to absorb sound energy efficiently inside cavities, not a repurposed thermal product.
Why This Product Delivers Superior Acoustic Performance
Acoustic-Optimised Density (60kg/m³)
The 60kg/m³ density is carefully selected to maximise absorption of speech, TV, music, and general airborne noise. This density provides an optimal balance between fibre resistance and porosity, ensuring effective sound energy dissipation across key residential and commercial frequency ranges.
75mm Thickness for Enhanced Absorption
The 75mm depth significantly improves mid- and lower-frequency absorption compared to thinner alternatives, making it suitable for serious soundproofing upgrades where cavity depth allows.
Open Fibre Structure
An open, bonded mineral fibre matrix converts airborne sound energy into low-grade heat through friction, reducing sound transmission and internal reverberation within partitions.
Predictable, System-Based Performance
SilentCloud slabs are designed to work as acoustic infill within tested construction systems, delivering reliable results when combined with appropriate linings and isolation components.
Fire Safety & Regulatory Compliance
SilentCloud™ Acoustic Mineral Wool Slabs are non-combustible and achieve Euroclass A1 fire performance, making them suitable for use in both residential and commercial buildings.
They are widely used in constructions designed to meet Approved Document Part E (Resistance to the Passage of Sound) when installed as part of a compliant acoustic system.
Their fire performance, dimensional stability, and acoustic intent make them appropriate for apartments, offices, schools, healthcare environments, and mixed-use developments.
Installation & Handling
These slabs are trade-ready and designed for straightforward installation:
• Friction-fit between studs and joists without fixings
• Clean cutting using a serrated insulation knife
• Maintains shape and position over time without slumping
• Compatible with timber and metal stud systems
Standard PPE is recommended during handling and installation, in line with best practice for mineral fibre products.
Typical Applications
• Stud partition walls
• Intermediate floors
• Suspended and dropped ceilings
• Home cinemas and media rooms
• Recording and rehearsal spaces
• Offices and meeting rooms
• Residential soundproofing upgrades
• Commercial refurbishment projects
Technical Specifications
• Thickness: 75mm
• Density: 60kg/m³
• Slab Size: 1200mm × 600mm
• Slabs per Pack: 6
• Coverage per Pack: 4.32m²
• Fire Rating: Euroclass A1 (Non-Combustible)
• Thermal Conductivity: Approx. 0.035 W/mK (secondary benefit)
Acoustic Performance Guidance
SilentCloud™ 75mm slabs are designed to be used as acoustic infill, not as a standalone soundproofing solution. For optimal results, they should be installed within framed systems and combined with appropriate linings such as multiple layers of plasterboard, resilient bars, acoustic membranes, or floating floor constructions.
Performance is system-dependent: correct detailing, sealing, and decoupling are essential to achieve meaningful reductions in airborne sound transmission.
Professional FAQ
Is this product designed for sound or heat insulation?
It is engineered primarily for acoustic sound absorption. Thermal performance is secondary and incidental.
Can it be used in ceilings and floors?
Yes. It is suitable for walls, intermediate floors, and suspended ceilings as part of a soundproofing system.
Does this help meet Part E requirements?
When used within a correctly designed construction, it supports compliance with Approved Document Part E.
Is it safe for residential use?
Yes. The slabs are non-combustible, dimensionally stable, and widely used in residential and commercial buildings.
Does higher density always mean better soundproofing?
No. Acoustic performance depends on the correct balance of density, thickness, and system design—not density alone.
SilentCloud™ Quality Assurance Statement
SilentCloud™ products are developed with a singular focus on professional acoustic performance. Every slab is manufactured to deliver predictable, repeatable results when used within properly designed soundproofing systems.
This is acoustic insulation with clear intent—engineered for long-term reliability, regulatory confidence, and real-world noise control in demanding environments.
