Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 18-05-2013, 15:59   #1
Registered User
 
NOMN's Avatar

Join Date: Apr 2013
Location: U.S.A.
Boat: CD 26D.
Posts: 129
Changing The Bottom Color - Easy Job?

Hi all, I'm interested in changing my brand new Cape Dory's hull to a darker color, it's currently light blue. I was wondering, since it was just done last year AND was just pressure-washed this week, if this would be an easy chore.

The previous anti fouling paint on there is "Pettit ultima 40sr". Would it be acceptable and fine to order some darker color of similar brand and just slap two coats on there?

Thank you so much!

Is it okay to apply with a brush?!!
__________________

__________________
"I was born in the breezes, and I had studied the sea as perhaps few men have studied it, neglecting all else." -Captain Joshua Slocum
Check out my blog it's freakin' awesome!! nomnmusic.com/blog**
NOMN is offline   Reply With Quote
Old 18-05-2013, 16:11   #2
Registered User

Join Date: Apr 2012
Location: Vancouver, BC
Boat: Alberg 30
Posts: 344
A quick scuff sand or scrub wouldn't hurt. You could use a roller, and with all the time you'd save over using a brush, have both steps done in around the same amount of time.
Sticking to the same type of paint is smart. That's more care than many take!
__________________

__________________
jgbrown is offline   Reply With Quote
Old 18-05-2013, 16:20   #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: 6,002
Send a message via Yahoo to roverhi
Re: Changing The Bottom Color - Easy Job???!

Should be fine to paint over the existing paint if the paint is compatible with the old paint. Don't know what the Pettit paint is but would ask them what paints are compatible with the current paint and test whatever paint you decide on to be sure it doesn't lift the old paint.

Personally, I'd stick with the old paint till it needs redoing. You'll almost never see the current bottom paint and will learn to live with it. Doing a bottom can cost several boat units. I could surely find other places on the boat to my money. If you are using an ablative paint, build up is not an issue. With hard vinyl or other non sluffing paints, paint build up can be an issue. The periodic removal of built up coats of bottom paint gets real expensive and is not fun to do.

Paint can be applied with a brush but I find that a pain. Much prefer rollling on bottom paint which is a much faster and easier way to apply it.
__________________
Peter O.
'Ae'a Pearson 35
roverhi is offline   Reply With Quote
Old 18-05-2013, 16:21   #4
Registered User
 
NOMN's Avatar

Join Date: Apr 2013
Location: U.S.A.
Boat: CD 26D.
Posts: 129
Re: Changing The Bottom Color - Easy Job???!

Okay, so you don't see any major problems? I wasn't even going to sand, lol, it's just so messy. Blue paint dust is getting all over me/the driveway/my clothes!!!

Is a dark green bottom paint a good choice? Or will whales try and have sex with the boat?! (srs)
__________________
"I was born in the breezes, and I had studied the sea as perhaps few men have studied it, neglecting all else." -Captain Joshua Slocum
Check out my blog it's freakin' awesome!! nomnmusic.com/blog**
NOMN is offline   Reply With Quote
Old 18-05-2013, 16:29   #5
Senior Cruiser
 
Roy M's Avatar

Cruisers Forum Supporter

Join Date: Feb 2007
Location: Southwestern Yacht Club, San Diego, CA
Boat: Searunner 40 trimaran, WILDERNESS
Posts: 3,041
Images: 4
Re: Changing The Bottom Color - Easy Job???!

Hydrowash it clean, scuff with a 3M pad, and you are good to go. Simple.
__________________
Roy M is offline   Reply With Quote
Old 18-05-2013, 17:35   #6
Registered User

Join Date: Apr 2012
Location: Vancouver, BC
Boat: Alberg 30
Posts: 344
Quote:
Originally Posted by NOMN View Post
Okay, so you don't see any major problems? I wasn't even going to sand, lol, it's just so messy. Blue paint dust is getting all over me/the driveway/my clothes!!!

Is a dark green bottom paint a good choice? Or will whales try and have sex with the boat?! (srs)
Not really sanding, more just a quick once over, either with sandpaper, or a scrubbing pad(like the 3m mentioned). Can even do it with a bucket of water to dip the pad or paper in(whichever is handy is the one I'd use) to avoid the dust. Just enough to give the surface some scratches for better bonding, shouldn't take much time and hardly any real dust.
__________________
jgbrown is offline   Reply With Quote
Old 18-05-2013, 18:41   #7
Senior Cruiser
 
Jim Cate's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 11,440
Re: Changing The Bottom Color - Easy Job???!

As far as changing the color -- lots of us who use ablative paints deliberately use a different color for the first and the second coats. This way as the paint wears away you see a color change when it is half gone and it gives an early warning.

Cheers,

Jim
__________________
Jim and Ann s/v Insatiable II , lying Port Cygnet, Tasmania once again
Jim Cate is offline   Reply With Quote
Old 18-05-2013, 19:10   #8
Senior Cruiser
 
44'cruisingcat's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Posts: 7,452
Images: 69
Re: Changing The Bottom Color - Easy Job???!

Quote:
Originally Posted by NOMN View Post
Okay, so you don't see any major problems? I wasn't even going to sand, lol, it's just so messy. Blue paint dust is getting all over me/the driveway/my clothes!!!

Is a dark green bottom paint a good choice? Or will whales try and have sex with the boat?! (srs)
If you're going to sand, use suitable paper and sand WET. The dust from antifoul is toxic.

A quick wet rub with a fairly coarse grit will shift any loose or flaking paint, and give the new stuff something solid to stick to.
__________________
44'cruisingcat is offline   Reply With Quote
Old 18-05-2013, 21:01   #9
Senior Cruiser
 
s/v Beth's Avatar

Cruisers Forum Supporter

Join Date: Oct 2008
Location: Coos Bay, Oregon
Boat: Valiant 40 (1975)
Posts: 4,066
Re: Changing The Bottom Color - Easy Job???!

I just did this this week. Lifted the boat on the yard in Astoria. Quick sand with 120 grit and vacuum sander. Remember this stuff is toxic. Wipe down with acetone (also toxic). Then two coats of my new bottom paint and I am good for another 24 months. (I hope). Changed color from black to light blue (on request of the divers and yard that want to be able to judge the growth easier on the underside.)
Did all this with wind blowing ( but not hard) be careful of your exposure to these chemicals.
__________________
s/v Beth is offline   Reply With Quote
Old 18-05-2013, 22:37   #10
Guy
Registered User

Join Date: Feb 2013
Location: So. Oregon, USA
Boat: Seafarer36c
Posts: 4,308
Re: Changing The Bottom Color - Easy Job???!

Newt; you may have been duped by the bottom cleaners; dark paint has more copper than light paint.
__________________
Guy is offline   Reply With Quote
Old 18-05-2013, 22:55   #11
Registered User
 
Blue Crab's Avatar

Join Date: Sep 2009
Location: Hurricane Highway
Boat: Cal 29
Posts: 3,882
pirate Re: Changing The Bottom Color - Easy Job???!

Quote:
Originally Posted by NOMN View Post
...Is a dark green bottom paint a good choice? Or will whales try and have sex with the boat?! (srs)
This point was discussed maybe a couple of years ago. Here's one. There are more. Bottom Paint Color and Whales

__________________
Blue Crab is offline   Reply With Quote
Old 18-05-2013, 23:12   #12
Moderator
 
Hudson Force's Avatar

Cruisers Forum Supporter

Join Date: Nov 2008
Location: Lived aboard & cruised for 45 years,- now on a chair in my walk-in closet.
Boat: Morgan OI 413 1973 - Aythya
Posts: 7,894
Images: 1
Re: Changing The Bottom Color - Easy Job?

Not many people see the bottom paint of my vessel when she lifts her skrits in a brisk breeze! I, myself and at the helm, never lean out to see this painted surface. I'm pretty sure it's black as I recall, but it could be brown or red,- ...no I think black! Is your goal to have a fashionable color? Is there a fashionable color for the underwater coating? Tell us more about your motivation!
__________________
Take care and joy, Aythya crew
Hudson Force is offline   Reply With Quote
Old 18-05-2013, 23:30   #13
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
Re: Changing The Bottom Color - Easy Job???!

Quote:
Originally Posted by Jim Cate View Post
As far as changing the color -- lots of us who use ablative paints deliberately use a different color for the first and the second coats. This way as the paint wears away you see a color change when it is half gone and it gives an early warning.

Cheers,

Jim
agree above, just spent the weekend covering my black hull with light blue - its also easy to see if you've missed any bits putting it on, too.
__________________
charliehows is offline   Reply With Quote
Old 19-05-2013, 08:09   #14
Senior Cruiser
 
Roy M's Avatar

Cruisers Forum Supporter

Join Date: Feb 2007
Location: Southwestern Yacht Club, San Diego, CA
Boat: Searunner 40 trimaran, WILDERNESS
Posts: 3,041
Images: 4
Re: Changing The Bottom Color - Easy Job?

The last time I painted my hulls (trimaran), I wanted something different, I wanted brown, so I mixed green with red. It came out better than I thought it would. Six months later it turned to a brighter green than I had originally purchased. The lesson? I'll stick with one color, even if it's just red.
__________________
Roy M is offline   Reply With Quote
Old 19-05-2013, 08:16   #15
Freelance Delivery Skipper..
 
boatman61's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2010
Location: UK/Portugal
Posts: 20,188
Images: 2
Send a message via Skype™ to boatman61
pirate Re: Changing The Bottom Color - Easy Job???!

[QUOTE=NOMN;1238652
Is a dark green bottom paint a good choice? Or will whales try and have sex with the boat?! (srs)[/QUOTE]

No... that only happens with dark top sides & white antifoul...
Another no-no is black antifoul and white topsides... they keep trying to turn you 'right side up'....
__________________


Born To Be Wild
boatman61 is online now   Reply With Quote
Reply

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dinghy Bottom Protection RDW Auxiliary Equipment & Dinghy 13 13-11-2015 01:38
Paint Job for My Boat NaturalMystic Construction, Maintenance & Refit 15 21-05-2015 17:44
Pool Brush for Cleaning Bottom ? Yes / No rhr1956 Construction, Maintenance & Refit 27 11-03-2015 12:25
Bottom Cleaning and Annode Changing dnimigon Construction, Maintenance & Refit 32 31-01-2013 21:58
Bottom Paint Mexdon Construction, Maintenance & Refit 15 01-12-2011 08:22



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:39.


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.