Bottom Paint Leaving your inflatable boat in the water for more than a few days is a sure indication that marine growth will prosper at the bottom fabric. Regular bottom paints will not do so well because they will not adhere well to the fabric. Thick paints are just too thick to allow for easy storage without cracking the paint. Thinning the paint is out of the question as though the boat will deflate and store well, it will not be free from marine growth. There are paints that leech an active ingredient like cuprous oxide in the water but they are ineffective when dry. They are also remove messy to handle. There are plenty of paint manufacturers who have come out with bottom paints for inflatable boats. The application is two step and starts with the application of a first coat then followed with top quality cuprous – oxide bottom paint.
The first is called Hy-Grip and should be applied after the bottom has been thoroughly clean. First, wash the bottom with soap and water to strip the marine growth after which scrub the bottom with solvent on Hypalon boats and MEK (methyl ethyl ketone) on PVC boats. It is best that no trace of oxidation is evident on the bottom of the boat. To check, soak a clean rag in the solvent. Wipe the bottom of the boat with the clean rag. If no color shows up, then the boat s bottom is clean. For new boats, you should remove all the surface from the bottom fabric plasticizers.
Most plasticizers can be wiped off with a rag soaked in solvent. Some inflatable boats are tougher that you might have to use a stiff-bristled brush to scrub off the plasticizer. The Interlux #202 is very effective in removing silicones. You might want to consider using this to remove plasticizers, oxidized materials and silicone or the fabric surface for ease in applying the first s. Once you are 100% sure that the boat s bottom is clean, apply the Hy-Grip with a clean brush. The Hy-Grip is the material that will bond the paint with the boat s bottom. Any bottom paint will do but highly recommended is the Shipbottom Premium Performance antifouling paint. Look for a bottom paint that is hard-drying and flexible with high cuprous oxide content (about 62.5%). This type of bottom paint will last for seasons. The boat can also be easily stored without fear of flaking or cracking paints. Make sure the paint line of the boat s bottom is above the waterline on a fully loaded boat. Mark the line to make sure. The bottom paint should be good for two seasons at least. The first should last longer unless you don t take care of the boat. RIBS should also be painted in the same process as that with any conventional fiberglass or aluminum boats but with the addition of painting the fiberglass or aluminum bottom with the first appropriate. Note that the side and stern tubes are in the water when the RIB is docked. For more information about inflatable boats maintenance: bottom paint visit: Paint Manufacturers admit There are only seven colours NewsBiscuit Green Paint Technology for Painting Contractors Gallery Larefaccionaria Unilever Centre for Molecular Informatics, Cambridge # 10: Green Chain Reaction cleaning the data and next steps petermr’s blog Painting Classes the: Talking About The Pros And Cons On The Use Of Acrylics And Oil Based Paints MyEstateBuilder.