Key advantages
- Very high sound absorption (NRC up to ~1.0)
- Reduces sound transmission more effectively
- Fire-resistant – non-combustible (A1)
- Withstands very high temperatures
- Does not settle and remains stable over time
- Moisture-resistant and does not attract pests
- Suitable for demanding acoustic requirements
Why this product
Stone wool with a density of 80 kg/m³ is designed for projects that require enhanced sound insulation beyond standard solutions.
It is particularly suitable for settings that need better noise control between spaces, such as offices, meeting rooms and studios.
Technical description
ROCKWOOL stone wool is made from natural basalt, which is melted at high temperatures and processed into mineral fibres with an open structure.
This structure enables:
- Absorption of sound energy
- Reduced sound transmission between spaces
- Improved acoustic performance in plasterboard systems
A density of 80 kg/m³ offers a combination of:
- High sound absorption
- Improved acoustic mass
- Long-term structural stability
The product also provides:
- Thermal insulation
- Fire protection (Class A1 – non-combustible)
It also does not break down or rot, and is unaffected by microorganisms.
Applications
- Plasterboard walls (interior partitions)
- Meeting rooms and offices
- Studios and music rooms
- Hotels and public buildings
- Hospitals and educational institutions
- Acoustic ceilings
- Industrial buildings
Technical specifications
- Material type: stone wool (rock wool)
- Density: 80 kg/m³
- Thickness: 50 mm (5 cm)
- Noise reduction coefficient (NRC): up to ~1.0
- Thermal conductivity: approx. 0.034 W/(m·K)
- Fire classification: A1 – non-combustible
- Melting point: above 1000°C
- Water absorption: very low
- Water vapour absorption: <0.04%
- Standards: EN ISO 354 / ASTM C423 / EN 13501-1
Installation
- Cut to size and insert between the plasterboard profiles
- Install using the Friction Fit method (no adhesive)
- Fill the cavity completely for optimal performance
- Suitable for double walls and ceilings
Important: full installation with no gaps = better acoustic performance
Manufacturer data
- Manufacturer: ROCKWOOL
- Series: Safe’n’Silent
- Material: stone wool made from basalt
- Intended use: sound insulation, thermal insulation and fire protection
- Suitable for: private, public and industrial buildings
Performance table
ROCKWOOL technical specifications
ROCKWOOL stone wool fire classification
ROCKWOOL European fire classification
Standards
EN 13162 | EN 13501-1 (A1) | EN ISO 354 | EN ISO 11654 | EN 12667 | EN 12086 | EN 1609
