Performance:
Tested on a timber subfloor with one layer of plasterboard directly fixed to the underside of joists.
Airborne Performance: (Higher figures indicate better performance)
- Sound Transmission Class (STC): 51dB (DnT,w)
- Weighted Sound Reduction Index (Rw+Ctr): 43dB (DnT,w+Ctr) - Includes correction for low-frequency performance.
Airborne sound reduction of untreated timber floor:
- STC: 38dB (DnT,w)
- Rw+Ctr: 25dB (DnT,w+Ctr)
Airborne improvement with treatment:
- STC Improvement: 13dB (DnT,w)
- Rw+Ctr Improvement: 18dB (DnT,w+Ctr)
Impact Performance: (Lower figures indicate better performance)
- Impact Sound Transmission Class (LNT,w): 51dB
Impact sound reduction of untreated timber floor:
Impact improvement with treatment:
Concrete Floor Performance:
Tested on a 200mm concrete slab.
Impact Performance: (Lower figures indicate better performance)
- Impact Sound Transmission Class (LNT,w): 47dB
Impact sound reduction of untreated concrete floor
Impact improvement with treatment:
Installation & Tips
For optimal performance, ensure the subfloor is clean, dry, and level. Lay SilentMat 15mm with the foam side down and seams tightly butted. Use an appropriate adhesive or tape at joints to prevent movement. Always follow manufacturer guidance for underlay installation and consult building regulations for compliance.
Related Collections:
Wall Soundproofing Products
Ceiling Soundproofing Products
