RW3 Acoustic Rockwool
RW3 Acoustic Rockwool Insulation (50mm & 100mm)
High-Density Acoustic Mineral Wool for Soundproofing and Thermal Insulation
RW3 Acoustic Rockwool is a rigid, high-density mineral wool slab designed for exceptional sound absorption and thermal insulation in walls, floors, and ceilings.
It is the industry-standard acoustic core used in soundproofing systems, studio builds, and partition walls, providing both high-performance noise control and fire resistance.
Available in 50mm and 100mm thicknesses, RW3 is suitable for a wide range of acoustic and thermal applications in both residential and commercial environments.
🔊 Key Benefits
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Outstanding Acoustic Absorption – Effectively reduces airborne sound transmission through stud walls, floors, and ceilings.
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High Density (60kg/m³) – Provides superior sound attenuation and rigidity for secure fitting between studs or joists.
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Thermal Efficiency – Helps improve U-values and reduce heat loss.
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Fire Resistant – Non-combustible mineral wool achieves Euroclass A1 fire rating for safety and compliance.
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Easy to Install – Can be friction-fitted between timber or metal studwork without fixings.
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Moisture Resistant & Durable – Maintains shape and performance over time, even in humid environments.
⚙️ Specifications
| Property | 50mm RW3 | 100mm RW3 |
|---|---|---|
| Thickness | 50mm | 100mm |
| Density | 60kg/m³ | 60kg/m³ |
| Size per Slab | 1200mm x 600mm | 1200mm x 600mm |
| Thermal Conductivity | 0.034 W/mK | 0.034 W/mK |
| Fire Rating | Euroclass A1 (Non-Combustible) | Euroclass A1 (Non-Combustible) |
| Sound Absorption Coefficient (NRC) | Up to 1.00 | Up to 1.00 |
🏗️ Ideal For
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Acoustic walls and partitions
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Floating floor systems and ceiling cavities
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Studio and home theatre soundproofing
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Commercial and residential sound insulation
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Integration with SP15 Soundboard, Genie Clip, and Hushlay 15 systems
💡 How It Works
RW3 Acoustic Rockwool absorbs sound energy within its dense fibrous structure, converting vibrations into heat through friction and air movement.
When installed within a cavity wall or ceiling system, it prevents sound waves from transferring through the structure, dramatically reducing airborne noise and reverberation.
For maximum performance, use RW3 in conjunction with:
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Hushlay 15 Soundmatting or SP15 Soundboard (for floors).
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Genie Clip RST and Independent wall System (for walls and ceilings).
This combination ensures industry-leading soundproofing with enhanced thermal and fire resistance.
🛒 High-Performance Acoustic Insulation
Improve sound and thermal control across any project with RW3 Acoustic Rockwool – available in both 50mm and 100mm thicknesses for versatile acoustic performance.
Price range: £39.50 through £44.50 Inc VAT
