Riverfront Marine Sports Inc.

Bottom Painting
Riverfront Sales, Service, and Parts
33 Old Elm Street
Salisbury, MA

Service Description

We Bottom Paint Boats 


Hard Anti-fouling Paint (Good)


The paint dries to a porous film that is packed with biocides, and these leach out as they come into contact with water. This leaching is designed to release biocide throughout the season, but it is a diffusion controlled process that starts at a high level and steadily decreases until there is not enough biocide coming out of the paint film to maintain fouling protection. Once the biocide is exhausted, the remaining hard paint film remains intact. Hard anti-fouling's do not retain their anti-fouling ability if kept out of the water, and cannot be hauled and relaunched without repainting. However one of the main benefits of this type of anti-fouling is its resistance to abrasion and rubbing. This makes it ideal for fast powerboats, racing sailboats or boats where the owners have the bottoms scrubbed regularly. Most hard anti-fouling paints can be wet sanded and burnished prior to launch in order to reduce drag and improve hull speed. The paint film of hard bottom paints continually builds up year after year, and eventually becomes brittle, and starts to crack and flake off. It is at this point that it will need to be removed.

Examples include Ultra with Biolux, Fiberglass Bottomkote & Epoxy cop

Please contact service for all quotes 978-462-7755

Ablative Anti-fouling Paint (Better)Act Gallon Quart 400

Ablative types of anti-fouling are more efficient at delivering biocide than Hard anti-fouling's and use less biocide to provide more anti-fouling protection. To ablate means to ‘wear away’ or ‘erode’, and there are many anti-fouling paints that work by wearing away.Ablative anti-fouling's wear away with use like the controlled depletion polymers but at a much less controlled rate. Ablative anti-fouling's are affected more by water temperature salinity & alkalinity than are the controlled deletion polymers and generally wear away faster. They are less expensive than controlled deletion polymers and they provide excellent anti-fouling protection but they dont last as long as the controlled depletion polymers or controlled solubility co-polymers.

Examples include Fiberglass Bottomkote 

Please contact service for all quotes 978-462-7755

Micron Extra Gallon Quart 400Co-polymer Paint (Best)

Multi-Season can be hauled & relaunched without repainting. Designed to wear off to reduce build-up. These types of anti-fouling's are partially soluble which means that as water passes across the surface of the coating it wears the surface away, much like a bar of soap would wear away. The physical action of the water over the surface steadily reduces the thickness of the paint, which results in always having fresh biocide at the surface throughout the season. For this reason these types of anti-fouling's have the capability to perform well in the areas of highest fouling challenge, and the longevity is directly related to the thickness of the paint applied. Micron CSC/Extra

Please contact service for all quotes 978 -462-7755

Self-Polishing Co-Polymers (Professional Application Only)

SPC technology anti-fouling's work because the film contains an acrylic co-polymer that reacts with saltwater Micron66_1gl_US_3D_3and this only occurs at the surface. As a result, this chemical reaction controls and sustains the release of biocides, not diffusion. Because this reaction is chemical rather than physical it takes place at the same rate whether the boat is underway or sitting at the dock, throughout the lifetime of the antifouling, without decline. This technology is what made the tin-based (TBT) copolymer coatings last as long as they did, but since the demise of tin-based coatings the only coating in the yacht marketplace that uses an acrylic SPC co-polymer is Micron 66. 

NOTE: Each type of bottom paint requires different maintenance, see Interlux guide for more information. Be sure to check the compatibility of your current bottom coating before switching to another type.

Compatibility Chart

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