STP AERO ALUM DIAMOND Self-adhesive aluminum sheet for panel sealing and stiffening

STP Standartplast
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STP AERO ALUM DIAMOND Self-adhesive aluminum sheet for sealing and stiffening panels


STP Aero Alum Diamond is a self-adhesive aluminum sheet designed for closing technical openings and for lightweight stiffening of surfaces in automotive applications. Unlike traditional vibration-damping materials, it does not work through mass but through structural closure and surface continuity, making it particularly useful in doors and panels where there are holes or openings.


What is an aluminum sheet for in car audio

During the installation of an audio system:

  • doors have technical openings
  • the sheet metal is not a closed surface
  • the acoustic volume of the woofer is unstable

STP Aero Alum allows you to:

  • close holes and openings in the sheet metal
  • create a more uniform surface
  • improve acoustic volume behavior
  • increase local stiffness

This translates to:

  • better mid-bass response
  • greater woofer control
  • reduction of acoustic dispersion

It is a complementary product, not a substitute for vibration dampers.

Recommended applications

Primary applications:

  • car doors (sheet metal hole closure)
  • thin metal panels
  • technical openings
  • car audio retrofit

Can also be used for:

  • light sealing
  • local surface reinforcement
  • interventions where minimum thickness is needed

Ideal when space is limited.

Installation and Use

Recommended procedure:

  1. clean the surface
  2. remove grease and impurities
  3. cut the sheet
  4. remove the adhesive film
  5. apply covering the holes completely
  6. press to ensure adhesion

For proper sealing:

  • apply with overlap on edges
  • avoid tension in the material
  • ensure surface continuity

It is a complementary product, not a substitute for vibration dampers.


STP Aero Alum Diamond is a technical solution designed to improve the effectiveness of soundproofing treatments through surface closure and improvement of panel structure. Thanks to the extremely reduced thickness and ease of application, it is particularly useful in doors and car audio installations where sheet metal continuity directly affects acoustic performance.

Scheda tecnica

n-20230705101925-stp-aeroalum.pdf

6 sheets STP DIAMOND Aero Alum

STP AERO ALUM DIAMOND Technical specifications

  • Type: self-adhesive aluminum sheet
  • Structure: aluminum + adhesive
  • Thickness: 0.3 mm
  • Package contents: 6 sheets
  • Sheet dimensions: 375 x 500 mm
  • Total coverage: approximately 1.12 m²
  • Properties: non-flammable, waterproof
  • Application: self-adhesive
€ 49,00 Price incl. VAT