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Author Topic:   Temporary Anti-Fouling Coatings

martyg posted 02-10-2009 10:31 PM ET (US)
I keep my boat in [saltwater] about three months of the year. Anti-fouling paint seems excessive. Has anyone had any experiences with applications and waxes for temporary saltwater moorage? Thanks!
kwik_wurk posted 02-10-2009 11:17 PM ET (US)
Almost waxes all work for a bit when there is a good film (layer) of wax the prevents mechanical bonding of growth to the gelcoat. Most waxes will actually increase algae growth when it wears down from use. (I think it "feeds" the algae.)
I do not know of any wax brands that have active biocides (usually metals) to prevent growth. Most state: "prevents algae growth" by the thin film layer as mentioned above.
If you can haul/clean your boat out once per month you should be fine. In three summer months time you will have growth (Gig Harbor, Fox Island, Purdy, Vashon, won't matter).
You likely won't have barnacles, but a lot of growth and staining.
Yiddil posted 02-10-2009 11:38 PM ET (US)
bad I dea to leave a BW or any boat in Salt water for more than a few days..period! Anyone who leaves their boat in it for a month better be prepared for an awful hard time and a huge amount or work and dollor cost to undue what the salt water will do.
goldstem posted 02-11-2009 08:45 AM ET (US)
sorry. three months isn't temporary. I'd recommend an
ablative paint, it reduces the buildup over the years.
TransAm posted 02-11-2009 09:00 AM ET (US)
Marty,
As has been pointed out, leaving an untreated boat in water for any length of time beyond a week or so is never a good idea. Not only will your hull become fouled, but will run the risk of developing osmotic blisters. In a nutshell, blisters form when water permeates the laminate of the hull. Isolated blisters can be treated rather easily. However, if the permeation is extensive, remediation is a complicated and expensive process involving the mechanical removal of a uniform layer evenly over the entire hull, re-applying a barrier coat, and then properly applying a anti fouling paint designed for your application.
Here is a recent thread on the topic.
http://continuouswave.com/ubb/Forum3/HTML/014967.html
I would suggest an ablative anti fouling paint. These paints release the anti-fouling agent at a constant rate throughout their lives, wearing away or "ablating" like a bar of soap. These paints work well in high-growth areas and continue to be effective after haul-out and relaunch although you may want to touch up areas that have worn off. You would also do well to apply an epoxy barrier coat before the anti fouling paint-comparatively, a small price to pay. Like the guy says "you can pay me now, or pay me later"
Tohsgib posted 02-11-2009 10:53 AM ET (US)
3 months is basically a whole season. Anything more than 10 days and you will get growth. Paint it or haul it every week and wash.
Buckda posted 02-11-2009 02:27 PM ET (US)
If it is the common color(s) of ablative or other anti-fouling paint that is offensive to you, consider contacting forum member Jeff, who has managed to locate a supplier of "desert tan" ablative paint that makes the paint line almost invisible. He painted his 22' Outrage with this and it was very difficult to see the paint line from any "normal" distance while running.
Close inspection, however, revealed the paint...but it did not interfere with the beautiful lines of the Whaler hull, which is what many find objectionable.
Good luck.
tmann45 posted 02-11-2009 09:06 PM ET (US)
Buckda,
Pettit Vivid paint can be mix to probably any color and shade you would like.
http://www.pettitpaint.com/vivid.asp
martyg posted 02-13-2009 04:35 PM ET (US)
Guys -
Thanks for the feedback. I have decided to go with Vivid line.
jechura posted 02-13-2009 08:19 PM ET (US)
http://www.auroramarine.com/aurora/press_rels/pr_00stories/pr_002.html
jimh posted 02-14-2009 11:01 AM ET (US)
Jerry--That link to the VS721 High Performance Bottom Wax is interesting.
Have you tried VS721 yourself on your Boston Whaler OUTRAGE 22 hull?
martyg posted 02-18-2009 11:06 PM ET (US)
OK - VS721 looks really interesting - any thoughts on a bottom paint that doesn't contain such a high load of toxic substances?

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Author	Topic: Temporary Anti-Fouling Coatings
martyg	posted 02-10-2009 10:31 PM ET (US) I keep my boat in [saltwater] about three months of the year. Anti-fouling paint seems excessive. Has anyone had any experiences with applications and waxes for temporary saltwater moorage? Thanks!
kwik_wurk	posted 02-10-2009 11:17 PM ET (US) Almost waxes all work for a bit when there is a good film (layer) of wax the prevents mechanical bonding of growth to the gelcoat. Most waxes will actually increase algae growth when it wears down from use. (I think it "feeds" the algae.) I do not know of any wax brands that have active biocides (usually metals) to prevent growth. Most state: "prevents algae growth" by the thin film layer as mentioned above. If you can haul/clean your boat out once per month you should be fine. In three summer months time you will have growth (Gig Harbor, Fox Island, Purdy, Vashon, won't matter). You likely won't have barnacles, but a lot of growth and staining.
Yiddil	posted 02-10-2009 11:38 PM ET (US) bad I dea to leave a BW or any boat in Salt water for more than a few days..period! Anyone who leaves their boat in it for a month better be prepared for an awful hard time and a huge amount or work and dollor cost to undue what the salt water will do.
goldstem	posted 02-11-2009 08:45 AM ET (US) sorry. three months isn't temporary. I'd recommend an ablative paint, it reduces the buildup over the years.
TransAm	posted 02-11-2009 09:00 AM ET (US) Marty, As has been pointed out, leaving an untreated boat in water for any length of time beyond a week or so is never a good idea. Not only will your hull become fouled, but will run the risk of developing osmotic blisters. In a nutshell, blisters form when water permeates the laminate of the hull. Isolated blisters can be treated rather easily. However, if the permeation is extensive, remediation is a complicated and expensive process involving the mechanical removal of a uniform layer evenly over the entire hull, re-applying a barrier coat, and then properly applying a anti fouling paint designed for your application. Here is a recent thread on the topic. http://continuouswave.com/ubb/Forum3/HTML/014967.html I would suggest an ablative anti fouling paint. These paints release the anti-fouling agent at a constant rate throughout their lives, wearing away or "ablating" like a bar of soap. These paints work well in high-growth areas and continue to be effective after haul-out and relaunch although you may want to touch up areas that have worn off. You would also do well to apply an epoxy barrier coat before the anti fouling paint-comparatively, a small price to pay. Like the guy says "you can pay me now, or pay me later"
Tohsgib	posted 02-11-2009 10:53 AM ET (US) 3 months is basically a whole season. Anything more than 10 days and you will get growth. Paint it or haul it every week and wash.
Buckda	posted 02-11-2009 02:27 PM ET (US) If it is the common color(s) of ablative or other anti-fouling paint that is offensive to you, consider contacting forum member Jeff, who has managed to locate a supplier of "desert tan" ablative paint that makes the paint line almost invisible. He painted his 22' Outrage with this and it was very difficult to see the paint line from any "normal" distance while running. Close inspection, however, revealed the paint...but it did not interfere with the beautiful lines of the Whaler hull, which is what many find objectionable. Good luck.
tmann45	posted 02-11-2009 09:06 PM ET (US) Buckda, Pettit Vivid paint can be mix to probably any color and shade you would like. http://www.pettitpaint.com/vivid.asp
martyg	posted 02-13-2009 04:35 PM ET (US) Guys - Thanks for the feedback. I have decided to go with Vivid line.
jechura	posted 02-13-2009 08:19 PM ET (US) http://www.auroramarine.com/aurora/press_rels/pr_00stories/pr_002.html
jimh	posted 02-14-2009 11:01 AM ET (US) Jerry--That link to the VS721 High Performance Bottom Wax is interesting. Have you tried VS721 yourself on your Boston Whaler OUTRAGE 22 hull?
martyg	posted 02-18-2009 11:06 PM ET (US) OK - VS721 looks really interesting - any thoughts on a bottom paint that doesn't contain such a high load of toxic substances?