STP STPSNORA Sonora Special Line 5mm Vibration-Damping & Sound-Proofing Material

STP STPSNORA – Sonora 5.2mm Automotive Vibration Damping & Sound Proofing Sheets

Upgrade your driving experience with professional-grade noise reduction. The STP STPSNORA Sonora Special Line is a cutting-edge automotive sound insulation and vibration damping solution, engineered for superior cabin quietness and enhanced acoustic performance.

This advanced multi-layered sound proofing material is ideal for vehicle door panels, especially areas prone to moisture exposure. Each sheet features a 3-layer structure: a 2mm heavy butyl damping base, 3mm viscoelastic polyurethane foam for absorption, and a 1mm sticky polymer for effortless adhesion. The material’s non-hygroscopic soft foam and dense membrane make it resistant to humidity, ensuring long-term performance without degradation.

Key Features & Benefits:

• Multi-layer construction: damping, foam absorption, and adhesive for max performance
• Effective airborne sound insulation – 31dB noise reduction
• Strong adhesion to clean metal surfaces – perfect for automotive doors
• Moisture-resistant and thermally stable materials for durability
• Reduces vibration, road noise, and improves in-car audio quality
• Pre-cut sheets for quick and professional installation

Product Specifications:

• Order Code: STPSNORA
• Sheet Thickness: 5.2mm
• Sheet Dimensions: 750mm x 470mm
• Total Coverage Area: 3.53 m² (10 sheets)
• Noise Reduction Index: 31dB
• Colour: Sand
• Recommended Application: Inner Door Panels
• Installation Surface: Clean Metal

Installation Tips:

1. Clean and dry the surface thoroughly
2. Peel back protective layer and apply directly to metal door panels
3. Apply pressure to activate adhesive bond
4. Layer over with additional sound insulation if desired

STP Sonora is your go-to automotive sound proofing and vibration damping solution for reducing external noise and enhancing ride quality with professional-grade performance.