Ark Marine Neptune Ultra Heavy Compound


500ml £30.04
1L £55.12
5L £260.77

ARK MARINE NEPTUNE ULTRA HEAVY COMPOUND has been specifically developed to cut and correct the gel coat and other painted exterior marine surfaces of boats, yachts and a variety of watercraft.

Designed and formulated to remove heavy oxidation, scratches, sanding marks and other paint defects, NEPTUNE gets to work quickly, correcting the surface for the next stage of the polishing process with very little dust.

Application is simple and can be applied by hand or with a machine polisher.



  1. Ensure all areas to be treated have been thoroughly cleaned using ARK MARINE CERAMIC SHAMPOO before polishing.
  2. Shake the bottle well before use.
  3. To apply by hand, proceed to step 6.
  4. Apply four pea-sized spots of the finishing polish to the selected Angelwax compounding pad.
  5. Spread the polish around a small area with the machine polisher switched off. Switch on the machine polisher and apply medium pressure whilst working in a crosswise motion until a clear film appears on the surface. Remove the film with a clean, dry, microfibre cloth and finish with a buffing towel.
  6. To use NEPTUNE by hand, apply a small amount of product onto a microfibre applicator pad. Work the polish into the surface using a circular motion before buffing to a deep gloss finish using a clean, dry, microfibre cloth.

Additional information

Weight N/A

500ml, 1L, 5L

Free Gift

As a thank you to all of our loyal customers, spend over £70 (excl VAT and shipping) on ANY detailing products to receive a Choice of free gift, spend £120 (exc VAT) and also get free shipping

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 Angelwax Enigma Interno

 Angelwax Enigma Cermic Infused Shampoo

Many thanks once again for your continued support. The Angels.

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