Key advantages
• Reduced impact noise (footfall noise)
• Improved sound insulation between floors
• Reduced airborne sound transmission
• Elastic decoupling layer that reduces vibration
• Easy self-adhesive installation
• Crack isolation between the substrate and the tiling
• Suitable for underfloor heating
• High flexibility and long-term durability
Why this product
Whisper Mat CS provides a professional solution to the problem of noise between floors, particularly in projects that require acoustic improvement without increasing floor thickness.
Unlike traditional solutions, the underlay creates effective decoupling between the substrate and the tiling and significantly reduces sound transmission.
Technical description
A self-adhesive acoustic underlay based on an advanced elastic membrane, designed to reduce footstep (impact) noise and structure-borne noise in floor systems.
The product is installed under the tiling and creates a separation layer between the substrate and the structure, reducing the transmission of vibration and noise between floors.
In addition, the underlay acts as a crack-isolation solution, preventing movement in the concrete from transferring to the finished flooring.
Applications
• Residential apartments
• Office buildings
• Hotels
• Luxury projects
• Ceramic and stone tiling
• Spaces with acoustic requirements
• Buildings with noise problems between floors
Technical specifications
Product type: Self-adhesive acoustic underlay (membrane)
Thickness: approx. 2.5–3 mm
Installation method: Self-adhesive (Peel & Stick)
Coverage: approx. 13 m² per roll
Acoustic performance
IIC (impact noise insulation): up to 51
STC (airborne sound insulation): up to 56
ΔIIC (improvement): approx. 22 dB
Installation
• Adhere directly to a clean, dry substrate
• Apply a dedicated primer before installation
• Lay edge to edge with no overlaps
• Install under ceramic / stone tiling
• Compatible with underfloor heating systems
Performance table
Whisper Mat with porcelain tiles on timber
Whisper Mat with 20 cm concrete, no ceiling
Whisper Mat with 20 cm concrete, no ceiling
Whisper Mat with 15 cm concrete, no ceiling
Whisper Mat safety information Whisper Mat fire performance
Standards
ASTM E492 – impact noise testing
ASTM E989 – IIC rating
ASTM E90 – airborne sound transmission
ASTM E413 – STC rating
ASTM E84 – reaction to fire (Flame Spread 0 / Smoke 35)
