T90
Lightweight Acoustic Ceiling Damper System
The T90 Lightweight Acoustic Ceiling Damper System delivers high sound insulation within a shallow 90–120 mm build-up, making it ideal for renovations and rooms with limited headroom. Rubber isolation clips on the metal-stud cassette-keel frame decouple the ceiling from the slab, while built-in shock dampers and SG-DM452 Vibration Damping Tape break residual sound bridges.
A 50 mm mineral / synthetic wool layer absorbs cavity resonance, and the composite insulation board plus plasterboard finish add the mass needed to reach STC 44 / Rw 44 dB at a fraction of the depth of a spring-hung system.
Exploded Mounting Structure
10 layers · top to bottom
Layer Build-up
- 1
Concrete Slab
- 2
Min. 80 kg/m³ Mineral / Synthetic Wool
600 × 1200 × 50 mm
- 3
M8 × 80 Expansion Bolt
- 4
Main Cassette Keel 37MB
- 5
Edge Cassette Keel 20EB
- 6
Sub Cassette Keel 50SB
- 7
SG-DM452 Vibration Damping Tape
45 × 6000 × 2 mm
- 8
Composite Sound Insulation Board
1220 × 1220 × 17–18 mm
- 9
Plaster Board
- 10
AcousPanel or Other Finishes
Layer Specifications
| Layer | Product | Specification | Application |
|---|---|---|---|
| Damper | Built-in Shock Damper | 20 × 20 × 10 mm | Break sound bridges |
| Absorption | Mineral Wool / Synthetic Wool | 600 × 1200 × 50 mm | Uses sound absorption to enhance insulation |
| Structure | Cassette Keel | Main: 37 mm | Sub: 50 mm | Edge: 20 mm | Secure fit with preserved acoustic decoupling |
| Damper | Vibration Damping Tape | 45 × 6000 × 2 mm | Minimized rigid connections |
| Insulation | Composite Sound Insulation Board | 1220 × 1220 × 17–18 mm | Greatly improves sound insulation performance |
System Description
Panel 1
1 × 100 mm Concrete
Frame
Rubber isolation clip on metal stud (37 mm × 26 mm), spacing 600 mm, cavity width 150 mm + 50 mm Mineral Wool (80 kg/m³)
Panel 2
1 × 8 mm Fibre Cement + 1 × 1.3 mm Rubber + 1 × 6 mm Plasterboard
Details
Panel size 2.4 m × 2.4 m · Partition surface mass 24.5 kg/m² · Mass-air-mass resonant frequency 146 Hz
Acoustic Performance
Sound Insulation Prediction
All STC, OITC and acoustic performance figures are estimated / simulated values (INSUL Sound Insulation Prediction v9.0.22, © Marshall Day Acoustics 2017) intended solely as design references — not guaranteed field performance. Final results depend on site conditions, construction details and installation quality, beyond the control of INSUL.
Products Used in This System
Specify the T90 System
For Your Project
Our technical team can adapt this system to your site conditions and provide a full installation specification and quotation.
