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Description
50mm High-Density Acoustic Mineral Wool Slabs – 100 kg/m³ (2.88 m² / Pack)
Professional sound absorption for stud walls, ceilings & floors
Fire Rated | Precision Cut | Installer-Grade Performance
These 50 mm high-density acoustic mineral wool slabs are supplied under the SilentCloud range and engineered for effective airborne sound absorption within stud partitions, timber floors, and ceiling voids.
With a density of 100 kg/m³, they deliver strong mid- and low-frequency absorption where speech, TV and music noise commonly travels through building cavities.
SilentCloud acoustic slabs are designed as true acoustic infill, providing predictable real-world performance when used as part of a properly designed soundproofing system.
✔ Installer-approved
✔ Fire-safe (A1)
✔ Consistent acoustic performance
⭐ Why SilentCloud Acoustic Slabs Perform Better
Acoustic-Optimised High Density (100 kg/m³)
SilentCloud slabs use a dense open-fibre structure that increases friction within the cavity, converting airborne sound energy into heat and reducing noise transfer.
Optimised 50 mm Thickness
A practical solution where build-up depth is limited but meaningful sound control is required — commonly specified for:
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Stud partitions
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Ceiling voids
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Timber joist floors
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Separation walls
Precision-Cut for Tight Friction Fit
Manufactured to 1200 × 600 mm, SilentCloud slabs friction-fit securely between studs and joists without gaps, sagging or compression loss.
Fire-Safe & Regulation Ready
Classified Euroclass A1 (non-combustible), making them suitable for residential and commercial projects requiring fire-compliant materials.
📐 Technical Specification
| Property | Specification |
|---|---|
| Thickness | 50 mm |
| Density | 100 kg/m³ |
| Slab Size | 1200 × 600 mm |
| Coverage | 2.88 m² per pack |
| Material | Acoustic mineral wool |
| Fire Rating | Euroclass A1 (EN 13501-1) |
| Thermal Conductivity | ~0.034 W/mK |
| Installation | Friction-fit (no fixings required) |
| Compliance | UK Building Regulations ready |
🏗 Typical Applications
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Stud Walls – Improves airborne sound reduction
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Ceilings – Reduces noise transfer between floors
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Timber Floors – Controls airborne sound through joists
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Home Cinemas & Studios – Absorbs mid- and low-frequency reflections
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Offices & Commercial Spaces – Improves speech privacy
🔧 Installation Guidance
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Cut slabs slightly oversize using an insulation knife or saw
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Friction-fit tightly between studs or joists
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Do not compress — compression reduces acoustic performance
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Best results are achieved when SilentCloud slabs are used with acoustic boards, membranes or resilient systems
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Install dry and protect from moisture until enclosed
🔥 Fire, Safety & Durability
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A1 non-combustible — does not contribute to flame spread
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Resistant to mould, rot and bacterial growth
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Will not slump or settle once installed
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Suitable for regulated residential and commercial builds
❓ Frequently Asked Questions
What makes SilentCloud acoustic slabs suitable for soundproofing?
They are engineered with a high-density open-fibre structure that absorbs airborne sound effectively across common residential and commercial noise frequencies.
Can SilentCloud slabs be used on their own?
They are designed as acoustic infill and perform best as part of a complete soundproofing system.
Do these slabs provide thermal insulation too?
Yes — they offer useful thermal resistance alongside their primary acoustic function.
Are SilentCloud slabs safe to handle?
Standard PPE is recommended during installation. Once enclosed, they are completely safe.
🛡 SilentCloud Performance Promise
✔ Consistent density and sizing
✔ Installer-grade materials
✔ Predictable acoustic performance
✔ No exaggerated marketing claims
SilentCloud acoustic insulation — engineered for real-world sound control.
