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Boat Deck Paint & Bilge Paints
Two jobs that need very different paint. On deck: International Interdeck non-slip paint, Hempel's non-slip deck coating in 750ml, the KiwiGrip non-skid deck system with its textured roller finish, plus International non-slip additive sachets, matting additive and Hempel anti-slip pearls for adding grip to a paint you already have. In the bilge: International Danboline in 750ml and 2.5L, Hempel bilge and locker paint and Teamac bilge and locker paint in red.
Bilge paint is not just tidy — a painted bilge is one you can actually inspect. A white or light-coloured bilge shows up a diesel weep, a stern gland drip or a rust streak long before a bare, dark one does, and it stops the surface holding water and dirt. On deck, the choice is between a paint with grit already in it and adding your own: additives let you control how aggressive the finish is, which matters because a deck that shreds skin and sailbags is as much of a problem as one that is slippery.
Frequently asked questions
How much non-slip additive should I use?
Follow the paint maker's ratio and err on the light side for a first coat. More grit means more grip but a harsher surface that abrades knees, sails and bags, and holds dirt. Test a small area before committing to the whole deck.
Why paint a bilge?
To make it inspectable and easy to clean. A light-coloured painted bilge shows a diesel weep, a gland drip or rust as soon as it starts, and wipes out rather than absorbing. Bare GRP or dark surfaces hide exactly the leaks you need to spot early.
Can I paint over an existing non-slip deck?
Usually, provided it is sound, thoroughly cleaned and degreased, and keyed. The failure mode is contamination rather than compatibility — old wax, polish and sunscreen residue stop paint adhering. Use a dedicated pre-paint cleaner, not washing-up liquid.