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 31-05-2019, 06:14   #1
Registered User

Join Date: Dec 2009
Location: Quebec (boat currently in Sardinia)
Boat: Bruce Roberts 45 (steel) - Armonid
Posts: 93
Best process to maintain steel deck

My boat is a 30 y/o steel cutter. The hull was assembled by a competent boatyard. It's been blasted with molten zinc and painted with the Awlgrip system.

The deck has started to show several rust spots in recent years. Most being cosmetic surface stains, but some, around portholes especially, are more serious.

I've tried random systems with more or less success. I'd now like to get to the bottom of this.

I can't justify the cost of a professional refit - i.e. remove everything, sandblast/prime/coat, reinstall everything. So it'll be hunt-and-fix.

Since I don't think that I can bring back nooks and crannies to white metal, I assume that a rust converter of some kind would be the first line of action. Then followed by a primer (one or two part?), then covered by a couple of coats of surface paint (ex. inter deck).

I'd be happy to read advices/comments. If there are good instructions online, please post links. Most of what I came across were suggesting white metal. Nice but can't do.

[Edit]

Might be useful to add that it appears that the primer separated from the zinc layer over time. I can scrape fairly large scales of material that will reveal steel and mostly corroded zinc layer - white powdered zinc residues and dark rusty steel surface.

Here and there, the surface is covered with bubbles that hold water, leading to corrosion
__________________

gauvins is offline   Reply With Quote
Old 01-06-2019, 05:10   #2
Registered User

Join Date: Dec 2009
Location: Australia
Boat: building Roberts Mauritius 43ft
Posts: 1,044
Re: Best process to maintain steel deck

gauvins

Sorry I can't help you as my yacht is a Robert Mauritius f/g. But there's a fair bit of advice on different forums.

www.cruisersforum.com › Cruisers & Sailing Forums › The Fleet › Monohull Sailboats
Steel Boat Maintenance - Cruisers & Sailing Forums

Aug 9, 2009 - 15 posts - ‎10 authors
What exactly is involved in maintaining a steel boat ? ... The boat was painted and they did not remove all the deck fittings and portlights.Best process to maintain steel deck1 post 31 May 2019

Steel boat – heaven or hell? 15 posts 27 Jul 2016

Steel boat maintenance? 15 posts 23 Apr 2016

Steel Hull Maintenance 15 posts 13 Feb 2011


Is this any good?

Skunk Rust: Welcome

Skunk Rust” is a rust de-oxidizing primer that not only stops rust on contact but will consume all ferric oxide while producing a toothy structure which will double ...



Opinions of Skunk Rust and Pickle X
https://www.chevelles.com/forums/12-...-pickle-x.html
__________________

coopec43 is offline   Reply With Quote
Old 02-06-2019, 00:41   #3
Registered User

Join Date: Nov 2007
Location: Probably in an anchorage or a boatyard..
Boat: Ebbtide 33' steel cutter
Posts: 4,533
Re: Best process to maintain steel deck

Well worth a download imho -
https://www.amazon.com/Metal-boat-ma...Scott+Fratcher
conachair is offline   Reply With Quote
Old 02-06-2019, 00:51   #4
Registered User
 
MartinR's Avatar

Join Date: Feb 2015
Location: Sweden, boat in Greece
Boat: 73´ULDB custom ketch
Posts: 834
Re: Best process to maintain steel deck

The main ingredient of rust removers is phosphoric acid. It also removes rust stains. A treatment will not prevent rust, but will slow it down. Many layers of primer also slows the rust down.

To completely stop the rust, you need to sandblast. If it is only small spots, you can use a cheap spot blaster, typically used for cars. Before blasting, grind it down to bare metal.
MartinR is offline   Reply With Quote
Reply

Tags
steel, deck

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
Cal 21, need advice: glassing Deck-to-Hull Joint, & Deck Hardware Steel Type sailorthing Construction, Maintenance & Refit 1 10-06-2018 17:16
What corrosion process is going on in this steel deck? stillbuilding Construction, Maintenance & Refit 39 30-01-2017 11:49
How to maintain deck non-skid? drh1965 Construction, Maintenance & Refit 9 01-11-2008 17:57
Seeking Advice on Buying Process. Best Proceedure? 3Eagles Multihull Sailboats 2 26-06-2008 21:12
Don't maintain it, win a brand new boat wrscmatt Construction, Maintenance & Refit 2 02-03-2006 10:45



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:35.


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.