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"Aluminum Composite Panels"


Q. Hi, I want to know what is the polyester coated aluminum composite panels?
What it means Polyester coated?

Alejandra De Anda
Frank Architects - Laredo, Texas


A. It probably means painted with polyester resin paint or powder coated with polyester resin powder.

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey


A. Alejandro,
I tried to powder coat these once, but they came apart in the oven so they are probably wet painted.

Sheldon Taylor
Sheldon Taylor

supply chain electronics
Wake Forest, North Carolina



A. If it's the same material as we use in the sign industry ACS (aluminium composite sheet) the polyester probably refers to the core.

ACS is two sheet of Aluminium coil- normally between 0.40 & 0.70 mm.

The coils are pre-finished- not sure how. Some ACS is solid coloured so I presume it's wet painted. On the other hand some ACS is metal or stone effect so this isn't paint.

If you need ACS in a definitive colour there are various options;

1) Flood coat with self adhesive vinyl of the appropriate colour.
2) Wet spray
3) ACS manufacturers will provide you with virtually any RAL colour subject to a minimum quantity.

Hope this helps,

Andy [last name deleted for privacy by Editor]
- Dorset, UK

April 22, 2018

Q. 1. What is the thickness of colour coating done on a Aluminium Composite Panels?

2. What is the weight of the following,
a) 4ft * 8 ft Aluminium Composite Panel.
b) 4ft * 10 ft Aluminium Composite Panel
c) 4ft * 12 ft Aluminium Composite Panel?

3. What is the thickness of the upper Aluminium coil and the lower Aluminium coil in a Aluminium Composite Panel?

Flloyd Nathaniel
- Bangalore, Karnataka, India

April 2018

A. Hi Flloyd. A quick google search showed that one brand offered panels of 3, 4 or 6 mm thickness, with skins of 0.5 mm, and weights of 6, 7.6. and 10.9 kg/mm2. Their color coatings are fluorocarbon and range in thickness from 25 to 45 microns depending on whether plain, metallic, or 'imaged'. The back side has a wash coating.

It would seem from this that there are no unique answers to your questions even for panels from a single manufacturer.

Following up on Andy's response, the one manufacturer I quickly checked uses polyethylene cores for signage and non-combustible mineral-filled cores for interior and exterior panels.

Luck & Regards,

pic of Ted Mooney
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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