Materials & Applications

Primary Decking Materials

IMO/MED Certified deck covering. Panels and Composites

Green shipbuilding reaches cruise speed with the help of Amorim Cork Composites’ primary decking materials. Innovative and sustainable cork-based interior primary deck solutions which ensure that ships comply with safety standards while significantly reducing their carbon footprint.

The key factor in ensuring a negative carbon footprint is the cork oak forest itself - which is a carbon sink, responsible for retaining 73 tons of CO2 per ton of cork used for a typical application, which corresponds to 2,7 kilotons of CO2 retention.


  • Exterior Primary Decking

    ACM30 is a cork composite, a material specially formulated to be used as an exterior primary deck covering for levelling and fairing with additional features with IMO/MED certification. Due to the materials composition it significantly benefits weight reduction, being 2 to 5 times lighter than available primary decking solutions therefore improving vessel performance and rating, and consequently delivering energy savings. It also serves as a structural damping, soundproofing and thermal insulation barrier of the deck

  • Interior Primary Decking

    ACM52 is a new multi-function product for interior deck covering with IMO certification that combines outstanding technical and functional performance with impeccable sustainable credentials. It is a cork composite material especially designed to be used as an interior primary deck covering with 5 to 50mm thickness on metallic substrates.

    Designed in compliance with stringent fire and smoke standards, ACM52 has exceptionally low thermal conductivity, offering damping performance with acoustic benefits. Extremely lightweight – it is 2 to 5 times lighter that conventional decking – it provides comfort and performance, while reducing the carbon footprint, thanks to cork’s natural characteristics on the one hand, and its important contribution to energy savings, on the other. 



Amorim ACM52

ACM52 is a new certified deck covering with the Wheelmark symbol. The IMO/MED Wheelmark certification guarantees the ongoing commitment to product quality and safety of customers for sea-going yachts, offshore and passenger vessels, including cruise ships.

Cork technology is making an important contribution to a cleaner, greener shipping industry, with IMO compliance. Because our range’s main constituent is cork - a 100% natural, reusable and recyclable material - it stands out as a particularly valuable solution for sustainable deck construction, complying with the industry’s safety standards.

Amorim Cork Composites primary decking solutions have the IMO/MED Wheelmark certification that guarantees our ongoing commitment to product quality and safety of customers for sea-going yachts, offshore and passenger vessels, including cruise ships.

Key Features


Primary Decking Materials Type

Grade ACM30 ACM52
Density (Kg/m³) (1) 320-420 320-420
Thermal Conductivity (W/m°K) (2) 0,065* 0,065*
Loss Factor (20ºC @ 1Hz) (3) 0,11* 0,11*
Fire Standards (4) Yes Yes
Smoke Standards (5) No Yes

(1) ASTM F1315 (2) ISO 8301 (3)  ASTM E758 (4) Certified to IMO Res. MSC.307 (88) – (2010 FTP Code) Annex 1, Part 5 (5) Certified to IMO Res. MSC.307 (88) – (2010 FTP Code) Annex 1, Part 2

* Typical Values

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