Bill Ranson
Senior Member
This spray product made by Rustoleum contains 93% lead. I was told it is the exact formula as Petit Barnacle Barrier. I am thinking of using it to coat my thruster prop. Any experience with this product?
This spray product made by Rustoleum contains 93% lead. I was told it is the exact formula as Petit Barnacle Barrier. I am thinking of using it to coat my thruster prop. Any experience with this product?
This spray product made by Rustoleum contains 93% lead. I was told it is the exact formula as Petit Barnacle Barrier.
Hey Boyd, did you ever run your wing engine? I imagine you spun up your main wheel lots but the wing engine, not so much?
According to their website it says 93% Zinc, word "lead" maybe was in error.
RustOleum.com
I think both products are very similar. The Rustoleum is 50% zinc in the can and claim it's 93% zinc once the coating dries. Pettite claims the dried coating is the "highest possible zinc concentration". I bet that's 93%.![]()
My experiences have been that neither does a lot where my boat is. I am in a heavy fouling area and the prop is only turned once a month or so when I am not cruising.
my other experiences with cold galvanizing is it seems to adhere to some surfaces well and others it can be rubbed right off. My initial stab is the surface has to be squeaky clean and rugged up a bit...like regular paint but it seems shame to do that with galvanizing...you would think it would stick like hot dipped.
Good decision,I wanted propspeed on props, shafts, and skegs, yard said it only works on things that move/spin. We left the skegs,which foul with barnacles despite coats of hard a/f. If you get a good result from zinc spray on the shoe, can you remember to post it, when you know.When my boat was lifted last month, the prop was fine (protected with prop speed), but the stainless keel shoe was completely covered in barnacles.
I wasn't sure how Propspeed would stick to stainless, so I gave it a couple coats with a $8 can of zinc spray. It may not stick either, but for the cost it was worth a try.
How about your assistance boat? What do they run on it?
Nothing....it runs s so much it stays clean until really late fall or winter..then it isn't used much until it gets its annual overhaul.
In the summer not much sticks to the prop anyway.
The boat draws about 22 inches and I routinely plow through 18 inches of sand and mud.
I would say the boat is intentionally grounded 100 times a year and unintentionally grounded 50 times a year. Not much marine growth can get a to hold or survive the constant wear and tear if all the dragging and sandblasting.
The bad news is we only get a few years out of cutlets bearings and the prop gets reconditioned every year or so.
Good decision,I wanted propspeed on props, shafts, and skegs, yard said it only works on things that move/spin. We left the skegs,which foul with barnacles despite coats of hard a/f. If you get a good result from zinc spray on the shoe, can you remember to post it, when you know.
Does lead repel barnacles? The Pettit product has done well for our Northerly climate boat's prop. Dunno about lead. And which is worse for the environment?
I think both products are very similar. The Rustoleum is 50% zinc in the can and claim it's 93% zinc once the coating dries. Pettite claims the dried coating is the "highest possible zinc concentration". I bet that's 93%.![]()
"I still have to paint."
Scrub clean more often and there is no need for paint on copper..