Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 22-03-2018, 14:57   #1
Registered User
 
Bigjim's Avatar

Join Date: Feb 2017
Location: Waukegan, IL
Boat: Columbia 10.7
Posts: 384
Images: 94
Hull blasted, now what?

I just had my hull soda blasted, which took off a ton of old paint. The hull looks good. No bad damage. Just a couple of blemishes that will need some filling and sanding.

Here's the starboard view of the boat:



Here's the stern view:



It was suggested that I use a couple of coats of Petitt Protect and then a bottom paint.

Some say to use an ablative, others say to use a hard paint.

What paint do you use?

Also, does the barrier coat go right on now? Or do I have to do any other prep work to the hull, other than fill and sand any fissures?
__________________

Bigjim is offline   Reply With Quote
Old 22-03-2018, 16:06   #2
Senior Cruiser
 
senormechanico's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 6,783
Re: Hull blasted, now what?

barrier coat should be followed up with first coat of paint while it's still tacky to get a good bond.
If the boat is sailed a lot, ablative has advantages. Self polishing, smoother surface.
It will show you when you need to repaint.
Hard paint is better if the boat sits a lot without being sailed, because it doesn't depend on new surface being constantly exposed.
__________________

__________________
One should try to "Die Young" as old as possible.
senormechanico is offline   Reply With Quote
Old 22-03-2018, 16:18   #3
Registered User

Join Date: Nov 2005
Location: 5 Mile River
Boat: Bristol 41.1 Keep on Dancin'
Posts: 645
Re: Hull blasted, now what?

I would suggest you look into Interprotect by Interlux, and follow their directions. Now is the time to do it. One thing about ablative paint over hard paint, the ablative washes away so you keep reducing the amount of paint on the bottom. Hard paint keeps building up, and at some point, all has to be removed again. You mentioned tons of paint. You also should probably find what is most successful in your area of use.
keepondancin is offline   Reply With Quote
Old 23-03-2018, 14:24   #4
Registered User
 
Bigjim's Avatar

Join Date: Feb 2017
Location: Waukegan, IL
Boat: Columbia 10.7
Posts: 384
Images: 94
Re: Hull blasted, now what?

People are using both types here.

The ablative paint is good because you can see when and where it has worn away (if you use a different color). According to the paint rep, you can simply paint over the old paint because the new paint automatically resolves into the old paint (if you are using the same type).

Hard paint has to be sanded and prepared, according to him, but can last several years. According to him, the price differential is even if you follow recommendations and replace paint as suggested.

Obvious, actual experience differs. This is my first time painting any bottom. A friend, who has lots of experience, said that he recommends spraying the paint for the best results, or we will have to sand imperfection that occur when using a roller.
Bigjim is offline   Reply With Quote
Old 23-03-2018, 14:27   #5
Registered User
 
Bigjim's Avatar

Join Date: Feb 2017
Location: Waukegan, IL
Boat: Columbia 10.7
Posts: 384
Images: 94
Re: Hull blasted, now what?

Quote:
Originally Posted by senormechanico View Post
barrier coat should be followed up with first coat of paint while it's still tacky to get a good bond.
If the boat is sailed a lot, ablative has advantages. Self polishing, smoother surface.
It will show you when you need to repaint.
Hard paint is better if the boat sits a lot without being sailed, because it doesn't depend on new surface being constantly exposed.
We sailed almost every week, but only for an hour or two each time. A few times we sailed 6 hours down to Chicago and then back on the next day or day after. So, frequently, but not demanding.

We were setting the boat up for racing, but never did any.

The new boat is larger and NOT designed as a racer. I'm planning on doing more extended cruising this year.
Bigjim is offline   Reply With Quote
Old 23-03-2018, 14:56   #6
Now on the Dark Side: Stink Potter.
 
CSY Man's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Location: Ft. Lauderdale
Boat: 2001 Albin 28TE.
Posts: 3,734
Images: 120
Re: Hull blasted, now what?

I had my bottom soda blasted a few weeks ago.
Use 2 coats epoxy primer and or barrier coat before bottom paint.
Have always used hard paint and have gotten as much as 4 years from 2 coats of Trinidad Pro in Florida and the Bahamas.
__________________
Life is sexually transmitted
CSY Man is offline   Reply With Quote
Old 23-03-2018, 15:35   #7
Registered User

Join Date: Jan 2009
Boat: Tartan 37 #6
Posts: 380
Re: Hull blasted, now what?

My two cents, barrier coat followed quickly by one coat of hard anti fouling ,a different color from what the final coat will be. Then ,if you go ablative,you will know when it’s getting thin as the other color will start to show.
steamgoat is offline   Reply With Quote
Old 24-03-2018, 08:21   #8
Marine Service Provider

Join Date: Jun 2016
Posts: 275
Re: Hull blasted, now what?

Before you apply a two part epoxy barrier coat in accordance with the manufacturer's recommendations, and using a different color for each layer so that you can see where you've been, check the hull for divots, mini-craters and other surface damage. Fill all of them with a soft finish epoxy putty, such as West System resin and 410 filler, fortified with a little fumed silica to reduce sagging (can't remember the West number). This is very easy to sand, either by hand, palm sander or orbital sander. As all of it will stay cool below the waterline, there is no reason to use a rock hard, heat-tolerant filler. It's a couple of day's work that will significantly increase the longevity and effectiveness of the barrier coat.

Good luck
John Mardall
Vetus Maxwell Group.
JOHNMARDALL is offline   Reply With Quote
Old 24-03-2018, 08:23   #9
Registered User

Join Date: Sep 2014
Location: Manila, California
Boat: Cape George pilothouse 36 and a Cape Dory 25
Posts: 470
Re: Hull blasted, now what?

We are not using Mana much right now, but due to being in Humboldt Bay an ablative paint would be fine. The tides rush in and out, not like some places I have been in Bristol Bay, but pretty fast.
fatherchronica is offline   Reply With Quote
Old 24-03-2018, 10:17   #10
Registered User

Join Date: Mar 2011
Location: Curacao
Boat: Victoire 1122
Posts: 117
Re: Hull blasted, now what?

Quote:
Originally Posted by CSY Man View Post
I had my bottom soda blasted a few weeks ago.
this “paints” a quite colorful image in my head

Cheers!
aluijten is offline   Reply With Quote
Old 24-03-2018, 11:35   #11
Marine Service Provider
 
fkittson's Avatar

Join Date: Jan 2012
Location: Port Credit Ontario, Canada
Boat: 1978 Alberg 30
Posts: 216
Re: Hull blasted, now what?

Just a suggestion, and we do this all the time in the high end boat shop I run. Do your first coat of barrier paint and once you have reached you recoat time mix your next batch up. Once you induction time had passed pour of a small amount of the paint and mix in cabosil to a peanut butter consistency. Go around with a plastic spreader and fill any pin holes, gouges, and nicks. Make them as smooth as possible. Then apply your next coat. Another tip is when you tape your water line do as many layers of tape including bottom paint. Your first layer of tape will be at the exact hight you want you paint to be. The next tape layer will be 1/16 to 1/8” lower and so on. That way you will not have a big ledge of paint at the water line.
fkittson is offline   Reply With Quote
Old 24-03-2018, 16:24   #12
Registered User

Join Date: Jan 2015
Posts: 81
Re: Hull blasted, now what?

Quote:
Originally Posted by senormechanico View Post
barrier coat should be followed up with first coat of paint while it's still tacky to get a good bond.
If the boat is sailed a lot, ablative has advantages. Self polishing, smoother surface.
It will show you when you need to repaint.
Hard paint is better if the boat sits a lot without being sailed, because it doesn't depend on new surface being constantly exposed.
How right you are. When I first purchased my sailboat I did the same thing. West Systems Barrier Coat, two coats and used an offshore epoxy paint. 13 years later and a trip to Australia from NY and not one blister. Good advice.
icemate is offline   Reply With Quote
Old 24-03-2018, 17:40   #13
Registered User
 
flyingfin's Avatar

Join Date: Oct 2016
Location: Cape Haze,FL
Boat: Carver,Cobia,Nacra
Posts: 386
Re: Hull blasted, now what?

Here is another vote for Interlux Interprotect. Apply first cost, then the next day do a second coat, use a tint on the second coat so you dont miss anyplace. If you have enough left, do a third coat. No more than 24 hours between coats and you dont need to sand. Then bottom paint
flyingfin is offline   Reply With Quote
Old 25-03-2018, 11:43   #14
Now on the Dark Side: Stink Potter.
 
CSY Man's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Location: Ft. Lauderdale
Boat: 2001 Albin 28TE.
Posts: 3,734
Images: 120
Re: Hull blasted, now what?

Quote:
Originally Posted by aluijten View Post
this “paints” a quite colorful image in my head

Cheers!
Haha, I should had specified.
__________________
Life is sexually transmitted
CSY Man is offline   Reply With Quote
Old 01-04-2018, 22:01   #15
Registered User
 
Bigjim's Avatar

Join Date: Feb 2017
Location: Waukegan, IL
Boat: Columbia 10.7
Posts: 384
Images: 94
Re: Hull blasted, now what?

Quote:
Originally Posted by fkittson View Post
Just a suggestion, and we do this all the time in the high end boat shop I run. Do your first coat of barrier paint and once you have reached you recoat time mix your next batch up. Once you induction time had passed pour of a small amount of the paint and mix in cabosil to a peanut butter consistency. Go around with a plastic spreader and fill any pin holes, gouges, and nicks. Make them as smooth as possible. Then apply your next coat. Another tip is when you tape your water line do as many layers of tape including bottom paint. Your first layer of tape will be at the exact hight you want you paint to be. The next tape layer will be 1/16 to 1/8” lower and so on. That way you will not have a big ledge of paint at the water line.
Thanks. I saw the same suggestion on a video. Good idea. That's why this forum is so good. Things you'd never know or learn only after hard experience.
__________________

Bigjim is offline   Reply With Quote
Reply

Tags
hull

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Can my hot dark hull now charge my batteries??? pickpaul Electrical: Batteries, Generators & Solar 0 10-12-2016 20:50
Anyone in Seattle going to paint thier hull between now and April '13? James Alberding Construction, Maintenance & Refit 8 20-11-2012 22:27
For Sale: Vancouver 25 Hull #1 on eBay Now . . . $15k lazystar Classifieds Archive 0 19-09-2011 09:27
Garmin 'In-Hull' vs 'Thru-Hull' Transducers La Bras D'or Navigation 24 23-09-2009 07:26
Has anyone used Dri Diver or Hull Super Scrub for hull cleaning??? avazquez Product or Service Reviews & Evaluations 1 02-07-2008 21:31



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:56.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.