With an average thickness of at least 200 microns of Coppercoat being applied in a treatment, and a typical corrosion rate of 5 microns per year, it is easy to appreciate how this coating offers such long lasting and effective protection.
Furthermore, the inherent waterproofing qualities of the epoxy ensure that a treatment of Coppercoat will help prevent osmosis in GRP craft and offer extra protection against corrosion in steel vessels.
With the resin carrier insulating each copper particle, the final coating is inert and non conductive. Consequently Coppercoat does not cause electroloysis problems or cathodic decay in steel or aluminium craft. Sacrificial anodes should be fitted in the usual manner.
Source: https://coppercoat.com/coppercoat-leisure-antifoul-applications/what-is-coppercoat/