Key advantages
- Very high sound absorption (up to NRC ≈ 1.0)
- Reduces sound transmission between spaces
- Fire-resistant – non-combustible (A1)
- Withstands temperatures above 1000°C
- Does not absorb moisture or crumble
- Does not attract pests or rot
- Remains stable for years without settling
Why this product
Stone wool with a density of 100 kg/m³ is designed for projects that demand exceptionally high acoustic performance, such as noise-sensitive rooms or advanced plasterboard systems.
The high density delivers more effective sound absorption across a broad frequency range, especially in combination with double plasterboard walls or advanced insulation systems.
Technical description
ROCKWOOL Safe’n’Silent Pro stone wool is made from basalt (volcanic rock), which is melted and spun into mineral fibres with an open structure that absorbs sound energy and reduces sound transmission.
Material properties:
- Non-combustible (Class A1)
- Melting point of approx. 1000°C
- Fibrous structure that provides high sound absorption
The product is designed for plasterboard wall, partition and ceiling applications, and provides a combination of:
- Sound insulation
- Thermal insulation
- Fire protection
In addition, the material retains its structural stability over time and does not settle inside the wall, ensuring consistent performance throughout the life of the building.
Applications
- Plasterboard walls (interior partitions)
- Bedrooms and offices
- Studios and sound rooms
- Hotels and public buildings
- Hospitals and educational institutions
- Acoustic ceilings
- Industrial buildings
Technical specifications
- Material type: stone wool (rock wool)
- Density: 100 kg/m³
- Thickness: 25 mm (2.5 cm)
- Noise reduction coefficient (NRC): up to 1.0
- Thermal conductivity: approx. 0.033–0.036 W/(m·K)
- Fire classification: A1 – non-combustible
- Melting point: above 1000°C
- Standards: EN ISO 354 / ASTM C423 / EN 13501-1
- Water vapour absorption: very low (<0.04%)
- Water absorption: up to approx. 0.5–1 kg/m²
Installation
Cut to size and fit between the plasterboard framing (studs)
Friction Fit installation – no adhesive required
Can be incorporated into double walls or advanced acoustic systems
Also suitable for ceilings and partitions
Important: fill the entire cavity without gaps to achieve maximum acoustic performance
Manufacturer data
- Manufacturer: ROCKWOOL
- Series: Safe’n’Silent Pro
- Material: basalt stone wool
- Intended use: acoustic and 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
