Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 10-09-2009, 11:31   #1
Registered User

Join Date: Feb 2008
Boat: Beneteau 411
Posts: 162
Hull Moustache


My Topsides have an ugly light brownish yellow stain that is all along the waterline - and much higher closer to the bow.

I bought some some cleaner and followed the instructions: I just squirted it on and hosed it off after 2 minutes as directed, and it worked - no more moustache.However, 3 weeks later, and the moustache is back, the only difference being that now it is blotchy whereas before it was uniform.

I've read a few posts here about staining of the topsides, and I want to verify if I understand correctly what my problem and solution is:

It would appear that my gelcoat is porous, allowing the stain to quickly grow again. However the stain probably doesn't run deep into the gelcoat (seeing as it washed away quite easily.)

So my question is - do I only need to clean and wax my hull, or should I use a buffing compound first?


sgtPluck is offline   Reply With Quote
Old 10-09-2009, 11:38   #2
Senior Cruiser
Vasco's Avatar

Cruisers Forum Supporter

Join Date: Apr 2004
Location: Toronto
Boat: CS36Merlin, "La Belle Aurore" Ben393 "Breathless"
Posts: 7,275
Clean with oxalic acid and wax. Wax really retards the staining.

Rick I
Toronto in summer, Bahamas in winter.
Vasco is offline   Reply With Quote
Old 10-09-2009, 12:28   #3
Registered User
speciald@ocens.'s Avatar

Join Date: Apr 2008
Location: On the boat - Carib, Chesapeake
Boat: 58 Taswell AS
Posts: 1,139
My last four boats have had yellowish brown hull gel coat. I don't seem to get a mustache!
speciald@ocens. is offline   Reply With Quote
Old 10-09-2009, 12:59   #4
Moderator Emeritus
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,178
After removing the stains, anything that fills in the micropores in the gelcoat will help reduce future staining.

Life begins where land ends.
David M is offline   Reply With Quote

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
Garmin 'In-Hull' vs 'Thru-Hull' Transducers La Bras D'or Navigation 24 23-09-2009 07:26
One Thru-Hull - Many Uses? Tspringer Construction, Maintenance & Refit 6 13-06-2009 00:14
Hull Holed - Help! EWT Monohull Sailboats 3 09-05-2009 20:37
Thru hull Acadia Plumbing Systems and Fixtures 2 02-09-2008 07:19
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 10:08.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.