Sound Absortion StP Biplast
1Low stock
1In stock, ready to ship
StP Biplast Acoustic Foam 5mm / 10mm / 15mm – Car Sound Absorption & Anti-Squeak Material Australia
Looking for a reliable acoustic foam for car soundproofing that reduces noise, eliminates squeaks, and improves comfort?
StP Biplast (Gold Line) is a multi-purpose automotive sound absorption material designed to improve cabin acoustics, reduce vibrations, and provide thermal insulation — all in one easy-to-install solution.
Perfect for both DIY projects and professional installations.
What Is StP Biplast?
StP Biplast is a self-adhesive acoustic foam made from open-cell polyurethane. It is used as a finishing layer in sound deadening systems to absorb airborne noise and eliminate interior squeaks.
This makes it an essential component for achieving a quiet and refined cabin.
What Does StP Biplast Do?
- Absorbs airborne noise inside the cabin
- Reduces echo and hollow sound
- Eliminates squeaks between panels
- Improves thermal insulation
It is one of the most versatile car sound absorption materials in Australia.
Key Benefits
- Reduces noise and vibration
- Provides thermal insulation
- Prevents panel squeaks and rattles
- Easy self-adhesive installation
- Flexible for complex surfaces
Where to Use StP Biplast
- Doors (inner trims and panels)
- Roof / headliner
- Plastic interior panels
- Dashboard and console areas
Important: Apply on clean surfaces or on top of a vibration damping layer (StP Gold, Aero, etc.).
Choosing the Right Thickness
- 5 mm: best for tight spaces and small gaps
- 10 mm: универсальный вариант для дверей и панелей
- 15 mm: maximum sound absorption (ideal for roof and large cavities)
Choose based on available space and required performance.
Why StP Biplast Works
- Open-cell foam structure absorbs sound waves
- Reduces friction between surfaces (anti-squeak)
- Self-adhesive backing for quick installation
- Resistant to extreme temperatures (–40°C to +100°C)
- Lightweight and flexible
This makes it a reliable acoustic foam solution for car interiors.
Installation Guide
- Clean and degrease surface thoroughly
- Cut foam to required size
- Peel backing and apply evenly
- Press firmly for full contact
Simple installation suitable for DIY and professional use.
Pack Details
5 mm
- Sheets: 20
- Sheet size: 375 × 500 mm
- Total coverage: 3.75 m²
- Weight: 1.5 kg
10 mm
- Sheets: 10
- Sheet size: 375 × 500 mm
- Total coverage: 1.87 m²
- Weight: 1.5 kg
15 mm
- Sheets: 7
- Sheet size: 375 × 500 mm
- Total coverage: 1.3 m²
- Weight: 1.5 kg
Technical Specifications
- Purpose: Sound absorption, heat insulation, anti-squeak
- Installation surface: Clean plastic or over damping layer
- Bond strength: ≥ 2 N/cm
- Fire safety: Non-flammable
- Sound absorption factor: ≥ 0.1
Biplast vs Other Materials
- Accent: adds heat insulation + absorption
- Intrigo: structural absorption layer
- Biplast: best for soft contact areas and anti-squeak
Use Biplast when you need quiet, soft, and rattle-free interior panels.
How to Use in a Sound Deadening System
- Step 1: Vibration damping (StP Gold / Aero)
- Step 2: Insulation layer (optional)
- Step 3: Biplast (final acoustic foam layer)
This creates a comfortable and refined interior.
FAQ
Is Biplast good for fixing interior squeaks?
Yes — it is one of the best materials for eliminating panel noise and friction.Which thickness should I choose?
- 5 mm: tight areas - 10 mm: general use - 15 mm: maximum absorptionDo I need vibration damping underneath?
For best results — yes, it improves overall performance significantly.Buy StP Biplast in Australia
Upgrade your interior with a professional acoustic foam solution used by installers across Sydney.
👉 Order now or explore full sound deadening kits