Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 06-12-2012, 15:53   #1
Registered User

Join Date: Nov 2012
Location: Aboard s/v Bel Canto
Boat: Tayana 42
Posts: 20
Soft vs. hard bottom paints

Since I've just purchased a boat and will need to apply new bottom paint in the spring, I would like your opinions of the advantages and drawbacks of hard and soft (i.e. ablative) bottom paints, specifically for sailing on the east coast of the U.S, in The Bahamas, and in the Caribbean.
__________________

__________________
Bijimini is offline   Reply With Quote
Old 06-12-2012, 17:53   #2
Registered User

Join Date: Dec 2008
Location: Oriental, NC
Boat: Mainship Pilot 34
Posts: 1,429
Re: Soft vs. hard bottom paints

Ablative paints present a new surface with new antifoulant as time wears on. But ablatives aren't good for high speed power boats as the speed wears it off prematurely.

Hard paints require that the active copper and biocides permeate through the paint film. But having said that, they seem to work well. Hard paints require sanding periodically to prevent an excessive layer building up over an extended period.

David
__________________

__________________
djmarchand is offline   Reply With Quote
Old 06-12-2012, 18:15   #3
Senior Cruiser
 
roverhi's Avatar

Cruisers Forum Supporter

Join Date: Aug 2005
Location: Kona, Hawaii, Carlsbad, CA
Boat: 1969 Pearson 35 #108 & 1976 Sabre 28
Posts: 6,005
Send a message via Yahoo to roverhi
Re: Soft vs. hard bottom paints

I like the ablative paints. Since they wear off as it is used up, you have an indication of when it's time to repaint and no problems with paint buildup.. If you paint two coats with each a different color, it's easy to get full coverage with no holidays and an indication of wear on the paint in use. Have been using Interlux Micron Extra and getting 3 years plus between haul outs.
__________________
Peter O.
'Ae'a Pearson 35
roverhi is offline   Reply With Quote
Old 06-12-2012, 19:36   #4
Registered User
 
GaryMayo's Avatar

Join Date: Nov 2011
Location: Branched Oak Yacht Club, Wife is an Admiral in the Nebraska Navy
Boat: Clipper Marine 32 CC Aft Cabin Ketch
Posts: 1,211
Quote:
Originally Posted by roverhi View Post
I like the ablative paints. Since they wear off as it is used up, you have an indication of when it's time to repaint and no problems with paint buildup.. If you paint two coats with each a different color, it's easy to get full coverage with no holidays and an indication of wear on the paint in use. Have been using Interlux Micron Extra and getting 3 years plus between haul outs.
Are you English?

Second your choice of paint. However, by calling that company, and talking to their technical advisors, they can recommend which one of many paints they sell based on how and where the boat is used. Google the phone number for Interlux.
__________________
W.I.B. Crealock when asked what he thought of the easily trailerable Clipper Marine sailboats by a naval design collegue, Gentelman Bill responded, "I am very proud of them".
www.clippermarine.org & www.clipper-sailor.net
GaryMayo is offline   Reply With Quote
Old 06-12-2012, 19:54   #5
Senior Cruiser
 
roverhi's Avatar

Cruisers Forum Supporter

Join Date: Aug 2005
Location: Kona, Hawaii, Carlsbad, CA
Boat: 1969 Pearson 35 #108 & 1976 Sabre 28
Posts: 6,005
Send a message via Yahoo to roverhi
Re: Soft vs. hard bottom paints

No, my grandparents emigrated from Scotland. Calling them English was fighting words. I've lived in Hawaii for most of my life so guess you could call me Hawaiian though the bruddahs may not agree.
__________________
Peter O.
'Ae'a Pearson 35
roverhi is offline   Reply With Quote
Old 06-12-2012, 21:49   #6
Registered User
 
GaryMayo's Avatar

Join Date: Nov 2011
Location: Branched Oak Yacht Club, Wife is an Admiral in the Nebraska Navy
Boat: Clipper Marine 32 CC Aft Cabin Ketch
Posts: 1,211
Quote:
Originally Posted by roverhi View Post
No, my grandparents emigrated from Scotland. Calling them English was fighting words. I've lived in Hawaii for most of my life so guess you could call me Hawaiian though the bruddahs may not agree.
I asked because of your use of holiday to represent something missing. Thought that was English. It is also used by some tattoo artists to describe missing ink in a healed tattoo. The ink is on Holliday.
__________________
W.I.B. Crealock when asked what he thought of the easily trailerable Clipper Marine sailboats by a naval design collegue, Gentelman Bill responded, "I am very proud of them".
www.clippermarine.org & www.clipper-sailor.net
GaryMayo is offline   Reply With Quote
Old 06-12-2012, 22:19   #7
Senior Cruiser
 
roverhi's Avatar

Cruisers Forum Supporter

Join Date: Aug 2005
Location: Kona, Hawaii, Carlsbad, CA
Boat: 1969 Pearson 35 #108 & 1976 Sabre 28
Posts: 6,005
Send a message via Yahoo to roverhi
Re: Soft vs. hard bottom paints

Holiday is a painting term I first heard while we were building our w32 in Costa Mesa. Great term especially considering my skills with a brush.
__________________
Peter O.
'Ae'a Pearson 35
roverhi is offline   Reply With Quote
Old 06-12-2012, 22:31   #8
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,594
Re: Soft vs. hard bottom paints

Quote:
Originally Posted by djmarchand View Post
Ablative paints present a new surface with new antifoulant as time wears on.

Hard paints require that the active copper and biocides permeate through the paint film.
There is some confusion (as evidenced by djmarchand's post) about exactly how ablative paints work. They do shed their outer layers as water moves over the painted surface, much as a bar of soap wears away. This (in theory) constantly exposes fresh biocide to the surface. But ablatives also release their biocide (typically cuprous oxide) into the water 24/7/365, as do hard paints. The mechanism by which this occurs is not exactly identical between the two paint types, but they both do it.
__________________
fstbttms is offline   Reply With Quote
Old 06-12-2012, 23:10   #9
Registered User
 
GaryMayo's Avatar

Join Date: Nov 2011
Location: Branched Oak Yacht Club, Wife is an Admiral in the Nebraska Navy
Boat: Clipper Marine 32 CC Aft Cabin Ketch
Posts: 1,211
Quote:
Originally Posted by fstbttms View Post
There is some confusion (as evidenced by djmarchand's post) about exactly how ablative paints work. They do shed their outer layers as water moves over the painted surface, much as a bar of soap wears away. This (in theory) constantly exposes fresh biocide to the surface. But ablatives also release their biocide (typically cuprous oxide) into the water 24/7/365, as do hard paints. The mechanism by which this occurs is not exactly identical between the two paint types, but they both do it.
Hard paints leach paint a fraction as much as paint made to fall away. When I pressure washed my sailboat, a tide of blue water raced down the driveway from my Interlux Micron Extra paintjob. At first, I thought, my, that slime is sure blue, then I realized it was a layer of my $200 a can paint, eventually headed for the lake. Every fall, 100 sailboats pressure wash in that driveway.

Hey, Interlux is buddies with companies like Greywater, Realcon, Hailburbon (typos to confuse google) and the like. Pretty sure it is safe. Lol (should be cry out loud)
__________________
W.I.B. Crealock when asked what he thought of the easily trailerable Clipper Marine sailboats by a naval design collegue, Gentelman Bill responded, "I am very proud of them".
www.clippermarine.org & www.clipper-sailor.net
GaryMayo is offline   Reply With Quote
Old 06-12-2012, 23:19   #10
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,594
Re: Soft vs. hard bottom paints

Quote:
Originally Posted by GaryMayo View Post
Hard paints leach paint a fraction as much as paint made to fall away.
Neither type "leach paint". They leach the copper biocide. Yes, ablative paints are softer and are designed to wear away slowly. That is part of the way they work. Not sure what you expected would happen when you hit yours with a pressure washer.
__________________

__________________
fstbttms is offline   Reply With Quote
Reply

Tags
bottom paint

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:37.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.