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
Outstanding Acoustic Absorption – Effectively reduces airborne sound transmission through stud walls, floors, and ceilings.
High Density (60kg/m³) – Provides superior sound attenuation and rigidity for secure fitting between studs or joists.
Thermal Efficiency – Helps improve U-values and reduce heat loss.
Fire Resistant – Non-combustible mineral wool achieves Euroclass A1 fire rating for safety and compliance.
Easy to Install – Can be friction-fitted between timber or metal studwork without fixings.
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
Acoustic walls and partitions
Floating floor systems and ceiling cavities
Studio and home theatre soundproofing
Commercial and residential sound insulation
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:
Hushlay 15 Soundmatting or SP15 Soundboard (for floors).
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
