SIM A4 Plus

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SUPERIOR 2-IN-1 INSULATOR

SIM A4 Plus

The AutoFun SIM A4 PLUS is an advanced 4 mm closed-cell foam insulator designed to be the crucial second layer in your soundproofing system. It acts as a powerful barrier against both airborne noise and temperature transfer, ensuring your cabin stays quiet, cool in the summer, and warm in the winter.
All-Weather Comfort

Details​

This material offers a dual benefit: it effectively absorbs mid-range acoustic waves that penetrate the first damping layer, and it provides a critical thermal barrier. SIM A4 PLUS features a strong, non-hydroscopic composition, ensuring it repels water and prevents mold or mildew growth, perfect for humid environments.

Installation

The Second Layer Advantage. Apply SIM A4 PLUS directly over the damping layer (like VDM M2 HL) on any vertical or horizontal panel to maximize both acoustic and thermal insulation benefits inside the cabin.

Doors

Roof

Boot Lid

Bulkhead

Durable Closed-Cell Foam

Materials

The SIM A4 PLUS utilizes a specialized, non-hydroscopic closed-cell foam structure. This composition is key to blocking both sound waves and heat transfer, while its strong self-adhesive layer ensures simple, long-lasting application without absorbing moisture.

Data

Corrosion Protection 60%
Water & Moisture Resistance 100%
Vibration Damping 70%
Sound Insulation 90%
Thermal Insulation 95%