Floor System

D45

Dry Floating Floor Damping System

IIC 60≈ 32 dB ±5 dB≈ 70 mm

The D45 Dry Floating Floor Damping System is a full floating-floor build-up for rooms that demand serious impact and airborne isolation — music studios, home theatres and plant rooms. SG-FD50/25 Floor Damping Blocks raise the floor on resilient supports, creating a wool-filled cavity beneath a composite insulation board and self-leveling screed.

The result is a fully decoupled floating slab reaching IIC 60 with about 32 dB of insulation at roughly 70 mm — the highest-performing floor option in the range.

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Exploded Mounting Structure

6 layers · top to bottom

Layer Build-up

1
Floor Finishes — Carpet, Tiles and etc.
2
Self-Leveling Cement
3
Composite Sound Insulation Board
1200 × 1200 × 16–18 mm
SG-E17 SG-C10 SG-CN10 SG-F8
4
Min. 80 kg/m³ Mineral / Synthetic Wool
600 × 1200 × 50 mm
5
SG-FD50/25 Floor Damping Block
150 × 150 × 50/25 mm
SG-FD50/25 →
6
Floor Slab

Layer Specifications

D45 layer specifications
Layer	Product	Specification	Application
Damper	Floor Damping Block	150 × 150 × 50/25 mm	Break sound bridges
Absorption	Mineral Wool / Synthetic Wool	600 × 1200 × 50 mm	Uses sound absorption to enhance insulation
Damper	Composite Sound Insulation Board	1200 × 1200 × 16–18 mm	Greatly improves sound insulation performance
Protection	Cement Self-Leveling	—	Protect sound-insulation and damping layer

System Description

Panel 1

1 × 100 mm Concrete

Frame

Rubber Block (25 mm), spacing 600 mm, cavity width 50 mm + 50 mm Mineral Wool (80 kg/m³)

Panel 2

1 × 8 mm Fibre Cement + 1 × 1.3 mm Rubber + 1 × 6 mm Mag Board

Details

Panel size 2.4 m × 2.4 m · Partition surface mass 242 kg/m²

Acoustic Performance

IIC 60≈ 32 dB ±5 dB≈ 70 mm

Sound Insulation Prediction

Simulated with

D45 impact insulation prediction chart — IIC 60

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.