|
05-08-2017, 03:51 PM
|
#1
|
Guru
City: Baton Rouge, Louisiana
Vessel Name: Old School
Vessel Model: 38' Trawler custom built by Hike Metal Products
Join Date: Dec 2007
Posts: 1,043
|
Painting an aluminum boat
Greetings All:
It's time to repaint the topside of Old School as what's on there now is starting to flake in spots. I have never done this so I would like advice on what paint to buy. Will surely need to rough up the old paint with a sander. Can paint chips from the current paint be analyzed so as to get the same or similar color? All help appreciated.
Thanks,
Mike
|
|
|
05-09-2017, 06:02 AM
|
#2
|
Guru
Join Date: Oct 2007
Posts: 22,553
|
I have used Rustoleum water based aluminum primer for both aluminum and hard to paint galvanized.
It can be over painted with oil after a few days of drying.
Unlike many primers , it does not seem to require a top coat , 4 years so far.
|
|
|
05-09-2017, 07:08 AM
|
#3
|
TF Site Team
City: Jacksonville
Join Date: Nov 2008
Posts: 11,670
|
We painted all the aluminum on Hobo 5 years ago. I think we had ~50 plus pieces plus we painted all the exterior parts of the port lights. We first sanded down to bare metal then washed with Alumiprep 33 and then used Alodine, then a high build PPG epoxy primer and finished with Awlgrip paint. There were a lot more steps in between but these are the basics. As with most painting projects, the level of prep goes a long way on the how the finished product looks and lasts.
Look at some aircraft painting web sites for more information. Planes or parts of them have been painted for a long time. Good luck with your project.
|
|
|
05-09-2017, 07:42 AM
|
#4
|
TF Site Team
City: Jacksonville
Join Date: Nov 2008
Posts: 11,670
|
Some befores and afters.
|
|
|
05-09-2017, 08:51 AM
|
#5
|
Guru
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48 (sold)
Join Date: Apr 2008
Posts: 10,179
|
Quote:
Originally Posted by Larry M
We painted all the aluminum on Hobo 5 years ago. I think we had ~50 plus pieces plus we painted all the exterior parts of the port lights. We first sanded down to bare metal then washed with Alumiprep 33 and then used Alodine, then a high build PPG epoxy primer and finished with Awlgrip paint. There were a lot more steps in between but these are the basics. As with most painting projects, the level of prep goes a long way on the how the finished product looks and lasts.
Look at some aircraft painting web sites for more information. Planes or parts of them have been painted for a long time. Good luck with your project.
|
For painting Al, there are many wrong ways and but a few right ways if you desire a quality job. Like everything nautical he does, Larry M nailed it
|
|
|
05-09-2017, 12:08 PM
|
#6
|
Guru
City: Baton Rouge, Louisiana
Vessel Name: Old School
Vessel Model: 38' Trawler custom built by Hike Metal Products
Join Date: Dec 2007
Posts: 1,043
|
Very nice job Larry, and thanks to all who responded. I don't want to go down to bare metal as it would take many hours/days/who knows, etc. I plan to paint over the current paint job and, where necessary in a few places, down to bare metal. My concern is what paint to use over the old paint.
|
|
|
05-09-2017, 12:45 PM
|
#7
|
Guru
Join Date: Oct 2007
Posts: 22,553
|
. "My concern is what paint to use over the old paint."
In most cases a primer is required if the top coat needs to stay stuck to the substrate.
|
|
|
05-09-2017, 01:05 PM
|
#8
|
TF Site Team
City: Jacksonville
Join Date: Nov 2008
Posts: 11,670
|
That shouldn't be a problem. You shouldn't have to take everything down to bare metal. We didn't on our mast.
I would assume you have a 2 part paint. You still should sand everything to accept the recommended primer of the paint you're going to use. I'd contact the paint manufacturer.
|
|
|
05-09-2017, 04:27 PM
|
#9
|
Guru
City: Windsor
Vessel Name: Keeper IV
Vessel Model: 44 Viking ACMY
Join Date: Nov 2013
Posts: 1,350
|
The biggest mistake people make is not matching the primer to the topcoat and telling the paint MFG that your covering aluminum.
|
|
|
05-09-2017, 06:56 PM
|
#10
|
Guru
City: Sydney
Vessel Name: Sojourn
Vessel Model: Integrity 386
Join Date: Oct 2011
Posts: 13,293
|
In my limited experience of painting an aluminum windlass cover, exposed aluminum oxidizes faster than a fast thing. You need to get the primer on asap after exposing the surface. Thousands of aluminum Muir windlass covers(new ones are composite) with bubbled paint attest to this.
__________________
BruceK
2005 Integrity 386 "Sojourn"
Sydney Australia
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Trawler Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|