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Antifouling

Printed From: Yachts and Yachting Online
Category: Dinghy classes
Forum Name: Technique
Forum Discription: 'How to' section for dinghy questions and answers
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=13052
Printed Date: 19 Jul 19 at 1:30am
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com


Topic: Antifouling
Posted By: Riv
Subject: Antifouling
Date Posted: 30 Apr 18 at 4:49pm
Just asked Laser Performance if their Bahias need antifouling if left on a mooring. They said no because they are roto-moulded.

Has anyone got experience of roto-moulds on moorings, and/or antifouling them?




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Now proud owner of Mistral Div II prototype board



Replies:
Posted By: PeterG
Date Posted: 30 Apr 18 at 4:59pm
Well, if they mean you might have trouble getting antifouling to stick, then they are probably right.

If they are suggesting rotomoulded boats don't get fouled then I'd suggest they are talking b&*^cks


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Peter
Ex Cont 707
Laser 189635
DY 59


Posted By: crosby mafia
Date Posted: 30 Apr 18 at 6:28pm
One of the other residents clubs has a Bahia which was left on the water in a salt water dock.  Barnacles and other sea growth were growing well.  They now keep it ashore and had trouble removing the growth.  It wasn't antifouled at all ! 
My answer being its not non-stick to marine growth
   


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Better a crap day in Abersoch than any day at work.


Posted By: JimC
Date Posted: 30 Apr 18 at 6:52pm
I strongly suspect you'd have trouble getting antifouling to stick to a rotomould boat, but the best people to ask are probably the antifouling manufacturers.


Posted By: PeterG
Date Posted: 30 Apr 18 at 8:19pm
I came across a recommendation for plastic car bumper primer as a base for antifouling on a rotomoulded hull. Worth checking out, perhaps!

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Peter
Ex Cont 707
Laser 189635
DY 59


Posted By: Riv
Date Posted: 02 May 18 at 8:26pm
Thanks really useful info. If roto moulds can't easily be anti fouled then that's them all off our club buying list and I'll have to look Wayfarers and Comet Trios, good 'ol grp:)

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Now proud owner of Mistral Div II prototype board


Posted By: JimC
Date Posted: 03 May 18 at 7:50am
Well GRP has its own problems. Materials vary, and if the resins in a GRP boat haven't been chosen to be permanently immersed... I think your first port of call should be the paint manufacturers to see what they recommend.


Posted By: mozzy
Date Posted: 03 May 18 at 8:37am
Possible?  http://www.yachtsandyachting.com/news/194044/Introducing-MacGlide" rel="nofollow - http://www.yachtsandyachting.com/news/194044/Introducing-MacGlide

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https://www.youtube.com/user/656mozzy/" rel="nofollow - YouTube Channel
RS800 1144


Posted By: rb_stretch
Date Posted: 03 May 18 at 8:12pm
The simple solution to that is to paint an epoxy barrier coat first, something like Gelshield 200. Alternatively you could even coppercoat, but suspect that lightweight dinghies (speaking relatively to yachts) are the most suited.


Posted By: PeterG
Date Posted: 04 May 18 at 8:35am
How well does epoxy stick to roto moulded plastic?

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Peter
Ex Cont 707
Laser 189635
DY 59


Posted By: Rupert
Date Posted: 04 May 18 at 9:36pm
Originally posted by PeterG

How well does epoxy stick to roto moulded plastic?


Badly.

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Firefly 2324, Lightning 130, Puffin 229, Minisail 3446


Posted By: PeterG
Date Posted: 05 May 18 at 7:13am
What I suspected Unhappy

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Peter
Ex Cont 707
Laser 189635
DY 59


Posted By: rb_stretch
Date Posted: 07 May 18 at 7:50pm
Sorry I was responding to Jim's point on GRP. As far as I know rotomoulded doesn't work with any kind of coating. Only mechanical fastening.



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