Are Hempel and international anti fouling compatible? What to put on the prop?

Nostrodamus

Nostrodamus

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I currently have Hempel self-eroding anti foul on our boat and we are due to be hauled out for anti fouling next week.
I am not sure if they actually have Hempel and wondered if you could put international on top or do you need some kind of barrier.
Also what is the best thing to put on props to keep them clean.
Someone suggested egg whites (about 5 coats) and another suggested black felt tip.. both people say they really work?
Any help or suggestions welcome.
 
Nostrodamus said:
I currently have Hempel self-eroding anti foul on our boat and we are due to be hauled out for anti fouling next week.
I am not sure if they actually have Hempel and wondered if you could put international on top or do you need some kind of barrier.
Also what is the best thing to put on props to keep them clean.
Someone suggested egg whites (about 5 coats) and another suggested black felt tip.. both people say they really work?
Any help or suggestions welcome.
Click to expand...

depends on exactly what the current AF is and on which International one you are going to use. Most though these days are compatible without a barrier coat. There is a compatibility chart on International's website

Trilux Prop-O-Drev for the prop perhaps. It is a hard type antifouling and comes in a spray can. (Primer necessary on aluminium alloys)
 
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Suggest you use International Trilux on your prop. There are lots of potential treatments, but props are difficult to get both a good key and keep the paint on when in use. I have found Trilux works quite well on both an aluminium prop and a bronze folder.
 
Nostrodamus said:
I currently have Hempel self-eroding anti foul on our boat and we are due to be hauled out for anti fouling next week.
I am not sure if they actually have Hempel and wondered if you could put international on top or do you need some kind of barrier.
Also what is the best thing to put on props to keep them clean.
Someone suggested egg whites (about 5 coats) and another suggested black felt tip.. both people say they really work?
Any help or suggestions welcome.
Click to expand...

Do not mix the makes of antifoul paints. suggest you first coat with a barrier primer like International Primocon, then no problem to add whatever make of antifoul.
http://www.tcschandlery.co.uk/inter...25ltr/p11287?gclid=CN26kujx08YCFS3MtAodsVACSQ

Why paint the prop?? never done mine in 45 years of boating !

Mike
 
Caer Urfa said:
Do not mix the makes of antifoul paints. suggest you first coat with a barrier primer like International Primocon,
Click to expand...

THe OP says he has a self eroding Hempel antifouling on at the moment............ presumably Tiger Extra, Cruising Performer or Ocean Performer

If you look at the compatibility chart on the International website, which I mentioned earlier in post #2, you will see that Tiger and Cruising Performer can be overcoated by any of the International products except Micron Optima and VC 17m Extra without a barrier coat.

Ocean Performer would have to be treated as an unknown and a barrier coat used although having looked at the composition I would say very unlikely to be necessary, a light sanding of the surface being all that would be required.

http://www.yachtpaint.com/LiteratureCentre/antifouling-compatibility-chart-gbr.pdf
 
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VicS said:
THe OP says he has a self eroding Hempel antifouling on at the moment............ presumably Tiger Extra, Cruising Performer or Ocean Performer

If you look at the compatibility chart on the International website, which I mentioned earlier in post #2, you will see that Tiger and Cruising Performer can be overcoated by any of the International products except Micron Optima and VC 17m Extra without a barrier coat.

Ocean Performer would have to be treated as an unknown and a barrier coat used although having looked at the composition I would say very unlikely to be necessary, a light sanding of the surface being all that would be required.

http://www.yachtpaint.com/LiteratureCentre/antifouling-compatibility-chart-gbr.pdf
Click to expand...

Thank you for this information.. yes we have the Tiger Extra so that is good to know and may save me a lot of work.
 
We have painted International eroding antifouling over Blakes/Hempel eroding antifouling and vice versa, with no problem.

Have only found it necessary to use primer where the GRP has been exposed by wear of the old antifouling (or, following boat purchase, surveyor's investigator's scraping), and even then sometimes haven't bothered if there were only small areas (the worst that can happen is a small patch of the entifouling comes off, but this doesn't usually happen).
 
In the past 12 seasons we have used maybe 10 different antifouling paints by a wide variety of manufacturers. There has never been a compatibility issue, except that an International one had some teflon in it, which has a minor tendency to flake coats above it.

I am now in my fourth season of using Velox on my prop. There are photos of it on this forum at the ends of seasons , 2 and 3, without a single barnacle or other fouling on it. I now use it on the P- bracket and on the log impeller, where it does a great job. It is Italian made, so should be available where you are now. Needs a primer and doesn't seem cheap for the two tins but they should give you at least ten years.
 
As should always be said when discussing antifouling, efficacy of antifouling (prop or hull), is dependent entirely on location. A mate of mine has used Velux and it really didn't work well... But... I wouldn't even compare it against my boat (both in W. Mersea) as it's based in a different creek....
 
Over-coated numerous different eroding antifoul paints with no problems, always based on what was on special offer! It's never been anything with Teflon in so maybe that's why we've been OK. The OP will be fine with what he plans.
 
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