Plywood, if high quality marine grade will last a fairly long time, with just paint, but issues will eventually develop, just from living in the wet. if low quality big box store plywood is used, it'll rot pretty much after the first year afloat, regardless of paint type used.. 5 tips for painting marine plywood 5 tips for painting marine plywood marine plywood is a particular variety of plywood that’s been treated to withstand moisture . as the name implies, it’s often used on boats and other items that are in frequent contact with water.. Prepping hull for paint and painting the hull.
New plywood boat - permanantly moored - 2 pack system. hull below the waterline: ensure surface is clean and free from oil, grease and other contaminants. sand the timber surface with 150 grit garnet paper to provide a smooth surface for painting.. A fellow who was donating a boat to our local museum told me he had the real secret to boat painting. he had painted a production plywood boat with latex primer and latex paint. he was sanding the paint off and found it was almost impossible to remove the last traces of the latex primer because it had penetrated the wood to some degree.. Marine plywood is a great sheet material that can be easily cut using both hand saws and basic power tools. marine plywood is often used to build boat interiors and to replace flooring during boat renovations..
