How to Choose the Right Aluminium Composite Panel (ACP) Thickness and Finish for Your Project

aluminium composite panel

Why Choosing the Right ACP Matters

When it comes to modern architecture, signage, and interior design, Aluminium Composite Panels (ACP) offer the perfect mix of style, strength, and functionality.

But not all ACP panels are created equal — choosing the right thickness and surface finish can make a huge difference in your project’s performance, durability, and overall look.

At GB PLAS, we help builders, architects, and designers across Malaysia select ACP panels that deliver both aesthetic excellence and structural reliability. Here’s a complete guide to help you make the right choice.

Understanding ACP Panel Structure

An ACP panel is a sandwich-style material made of two thin aluminium sheets bonded to a polyethylene (PE) or mineral-filled core. This design gives it excellent rigidity, lightweight strength, and weather resistance — ideal for both exterior and interior applications.

Typical GB PLAS ACP panel specs:

  • Total Thickness: 2mm, 3mm, or 4mm (±0.2mm)
  • Aluminium Skin: 0.1mm, 0.2mm, or 0.4mm
  • Core Type: Polyethylene (PE) or Fire-Retardant (FR)
  • Width Options: 1220mm / 1250mm
  • Length: Up to 24 feet

Choosing the Right ACP Thickness

The right thickness depends on where and how you plan to use the panel.

Below is a quick breakdown of thickness recommendations based on application:

Application
Recommended ACP Thickness
Reason
Interior Wall Panels / Ceilings
2mm – 3mm
Lightweight, easy to install, sufficient rigidity indoors
Signage and Display Boards
3mm – 4mm
Provides extra stability and wind resistance
Exterior Cladding / Façades
4mm (0.4mm skin)
Withstands weather, UV exposure, and wind load
Industrial and Structural Use
4mm+ with FR Core
Enhanced strength and fire safety

Pro Tip:
For long-lasting outdoor projects, always go for 4mm ACP with thicker aluminium skin (0.4mm) — it performs better under Malaysia’s tropical climate.

PE Core vs FR Core: What’s the Difference?

Choosing the right core material is just as important as thickness.

Core Type
Description
Best For
PE (Polyethylene) Core
Lightweight, cost-effective, and flexible
Signage, interiors, short-term installations
FR (Fire-Retardant) Core
Filled with mineral compounds that slow flame spread
Building façades, commercial projects, safety-compliant designs

If your project requires fire-rated materials, always check that the ACP meets local fire safety standards. GB PLAS offers FR-certified ACP panels suitable for high-rise and public buildings.

Selecting the Right Surface Finish

Beyond structure, your ACP’s finish and coating play a key role in both appearance and protection.

Here’s how to choose the best one:

Finish Type
Features
Ideal Use
Matte Finish
Non-reflective, smooth texture
Modern interiors, minimalistic façades
Glossy Finish
Shiny surface for bold visual impact
Signage, showrooms, retail fronts
Metallic Finish
Sleek, futuristic look
Commercial buildings, offices
Wood-Grain Finish
Natural aesthetic without maintenance
Homes, interior walls, decorative panels
Mirror Finish
Reflective surface for modern appeal
High-end retail, architectural features
Brushed Finish
Textured metallic appearance
Industrial-style interiors, signage

Colour and Coating Quality

A high-quality coating is essential to keep the panels looking fresh over time.

GB PLAS uses high-durability PVDF and Polyester coatings that provide:

  • UV resistance against fading and cracking
  • Weatherproof protection against rain and humidity
  • Long-lasting shine even under direct sunlight

 

For outdoor façades, PVDF coating is strongly recommended due to its superior weather stability and self-cleaning properties.

How to Match ACP Specifications with Project Goals

Project Goal
Best ACP Type
Key Benefits
Lightweight installation
3mm PE Core
Easy to fabricate and install
Fire safety compliance
4mm FR Core
Meets building code standards
Luxury aesthetics
4mm Metallic / Mirror Finish
High-end visual appeal
Eco-friendly construction
Recyclable ACP from GB PLAS
Sustainable and durable
Low maintenance
PVDF-coated surface
Long-term colour and gloss retention

Why GB PLAS Is the Trusted Choice

With over 18 years of industry experience, GB PLAS is Malaysia’s trusted supplier of high-performance ACP panels used in architecture, design, and engineering projects. Our commitment to quality, innovation, and sustainability ensures every panel performs beautifully and lasts longer.

 

Why clients choose us:

  • ISO-certified production for consistent quality
  • Custom sizes and colour-matching services
  • FR-rated and weather-resistant options
  • Eco-friendly recycling initiatives (“Your Trash, Our Treasure”)
  • Trusted by architects and builders in 60+ countries

Conclusion: Get the Perfect ACP for Your Next Project

Selecting the right ACP thickness, finish, and core type isn’t just about looks — it’s about ensuring safety, performance, and long-term value.

Whether you’re designing a sleek commercial façade, durable signage, or a modern interior wall, GB PLAS provides the right ACP solution tailored to your needs.

 

Contact us today for a consultation or a custom quotation and discover why GB PLAS is the preferred choice for architects, builders, and designers across Malaysia.

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