2.25 m² | 4 mm | Extra Silent Coat Bulk pack | Sound deadening- 24 sheets

Silent Coat 4 mm Damping Mat – 2.25 m² (24 Sheets)

The Silent Coat 4 mm damping mat is a premium-grade sound and vibration control material designed to reduce structural noise, panel resonance, and vibrations effectively.
With its extra-thick butyl base and black aluminium top layer, this version offers maximum vibration absorption and thermal stability — ideal for demanding vehicle insulation and high-performance audio installations.

Key Features

• Material: Butyl rubber with black aluminium top layer

• Dimensions: 24 sheets (375 × 250 mm each, total 2.25 m²)

• Thickness: 4 mm

• Weight: 8.3 kg/m²

• Self-adhesive: Yes

• Colour: Black

• Heat resistance: up to 100 °C (direct) / 150 °C (radiant)

The 4 mm version provides deeper vibration damping compared to the standard 2 mm Silent Coat mats, making it ideal for heavier panels such as floors, wheel arches, and boot areas.

Benefits

• Maximum vibration and noise reduction thanks to added mass

• Eliminates drumming, rattles, and panel resonance

• Improves in-car acoustic comfort and audio performance

• Resistant to temperature extremes and ageing

• Easy to cut, shape, and apply

• Professional-grade material trusted by car audio and tuning experts

Applications

• Vehicle floors and bulkheads

• Wheel arches and boot areas

• Roofs and doors

• Under-bonnet use (limited to low-heat zones)

• Perfect for car audio, tuning, and restoration projects

Installation Tips

• Clean and degrease the surface thoroughly

• Apply firmly with a roller for best adhesion

• Avoid air pockets for maximum damping effect

• Combine with foam or thermal insulation layers for optimal performance