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Holdfast Marine Coat


IONYX HoldFast Marine Coat is a 2-part coating system. Part A is HoldFast Marine Coat. Part B is Catalyst (mixed 1:1).

HoldFast Marine Coat is a clear, thin-film, high-durability, and extremely smooth coating for underwater assets. HoldFast Marine Coat contains zero pesticides and zero heavy metals. Marine Coat creates a NanoCeramic surface which inhibits the growth of most marine grasses, barnacles, and mussels from metal and concrete. HoldFast Marine Coat creates a very low friction surface severely limiting the ability of marine organisms to attach onto treated surfaces. HoldFast Marine Coat may be used on painted or unpainted metal and concrete. HoldFast Marine Coat is not suitable for use on wood.

HoldFast Marine Coat prevents liquid seepage through concrete pores, and is effective coating in protecting concrete ponds and pipes. HoldFast Marine Coat further benefits pipes by reducing drag and energy costs to move liquids through pipelines.

Coverage: 600-800 sq.ft./gallon ($0.46 – $0.61 / sq.ft.)
Porous: 400-600 sq.ft./gallon ($0.61 – $0.92 / sq.ft.)

Quick-Look Brochure

Larger quantities are available. Contact us for details.

Sizes Available / MSRP

1 Quart$120.00
1 Gallon$365.00
5 Gallon$1,825.00

Additional information

What Are You Coating?

Concrete, Metal

Coating Type


Surface Type

Painted, Unpainted

Underwater Surface


Graffiti Protection


Adhesive Primer