For several canoes I just used an exterior paint knowing that these boats were going to get scratched up again on my rocky rivers. I thought about the interlux paints but heck once a scratch is done it's done. I did spray cans on one boat but never again. Always use a roller and the a foam brush to tip it all out. I use my boats so looks are good for a first glance but a close exam will show all the scars, kinda like me. Depends what you want to spend to make it look good.
I’ve painted a few canoes, some Royalex, some composite.
For some stupid reason, maybe because I’m cheap and had a can in the shop, I used spray paint. On the first couple, I’m a slow learner. One can was not nearly enough; on a 16 foot canoe I ended up using more like three cans of spray paint.
Spray painting a canoe is not something you want to do inside the shop, the cloud of aerosolized spray will drift on to every surface, and if you are wearing Crocs your feet will sport polka dots.
Working outside with spray paint in any breeze is a nightmare; if you hold the can the recommended 10 to 16 inches away half of the paint blows away before it reaches the hull, and if you compensate by holding the can closer you’ll end up with drips and sags.
I tried Krylon on some plastic patio furniture and was not impressed. I cheaped out on one ancient RX canoe and bought three cans of no-name paint from the Dollar Store. The coverage sucked compared to Rust-oleum spray and the color wasn’t even close to what was shown on the cap. The hull once scrubbed was bright yellow and the cap on the Dollar Store can was a near matching bright yellow. The paint that came out was dull flat pastel yellow and the canoe looked like a giant Easter egg. It was so fugly I added contrasting trim stripes.
Just say no to spray paint. Even at $3.50 a can I didn’t save much over a quart of enamel.
Unless you want to spring for a $40 quart of EZ-Poxy topside paint (which is good stuff) a quart of Rust-oleum can be had for $12-$15 and should be enough to paint a hull at least twice, probably three times.
Unless you want to change the hull color I’d try to find (or have mixed/tinted) a color close to the now likely UV faded light blue, so that when rocks inevitably scrape the paint off the scar will not be as vivid.
Wash/scour the hull to remove any dirt or contaminates. On really filthy grime encrusted hull’s I have used Doug’s magic mix of 50% vinegar/50% Dawn (no water) and a thorough scrub. Don’t even bother rinsing it thoroughly after the first scrub, you’ll find spots you missed, especially along the hard excise edge just below the gunwales.
P9221236 by
Mike McCrea, on Flickr
(That vinegar/Dawn mix is amazing)
Scrubbed, thoroughly rinsed and dried bring it inside (if you have room) and tape the gunwales.
Caution – if you turn the canoe over after washing/rinsing considerably dirty water will drip down from behind vinyl or aluminum gunwales.
Use a short foam “cigar” roller and narrow pan to lay the paint on, and a 2 or 3 inch foam brush to tip it out. I find it easier to roll and tip half of the hull at a time, keel line down to the gunwale on one side, tip out that half, walk around the canoe roll and tip repeat on the other side.
PA261301 by
Mike McCrea, on Flickr
My tip out procedure after rolling the paint is to take the foam brush and work my way down from the keel line, lightly running the brush in a straight line all the way from one stem to the other. Probably makes no difference, but I go back to the end where I started and tip out the next 2 or 3 inch wide end-to-end stretch. It helps to have decent light and no glare, so you can see where to overlap the last tip out line.
I don’t know if this happens for anyone else, but at the prefect tip out pressure the foam brush makes a peculiar faint
sqweee sound. Same sound when tipping out varnish or urethane.
While you have rollers, pan and brushes and 2/3 of a quart of custom light blue paint leftover you might as well let the first coat cure, take the canoe outside by the hose and rinse bucket, wet sand it lightly with 220 (just enough to scuff the gloss), let it dry and put on a second coat. And again for a third coat if you have the paint and patience left.