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Cleaning GRP boats

Printed From: Yachts and Yachting Online
Category: General
Forum Name: Repair & maintenance
Forum Discription: Questions & tips on the subject
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=607
Printed Date: 18 Jan 22 at 6:40am
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com


Topic: Cleaning GRP boats
Posted By: alio_mci
Subject: Cleaning GRP boats
Date Posted: 05 Apr 05 at 9:52pm

Has anyone got any tips on cleaning a Hobie 405 so that it will become white again.



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Ali McInnes(hobie 405 no.297)
Leeds



Replies:
Posted By: KnightMare
Date Posted: 05 Apr 05 at 10:04pm

ok well looking at peoples advice to a friend of mine these were the sugestions:

http://flipside.co.uk/~sailsport/cgi-bin/ss.cgi?&page=showitem&pid=SBSTAR1 - http://flipside.co.uk/~sailsport/cgi-bin/ss.cgi?&page=sh owitem&pid=SBSTAR1  
a product used at someones club (I forget what class uses it a lot- but aparently it works)

Astonish has been mentioned and aparently was recomended by PBO and is nice and cheap.

Another alternative is Jif/Cif stuff (or other household cleaner)

Hope that gave some ideas, Hopefuly other people will be able to give more specific advice.



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http://theramblingsofmyinnergeek.blogspot.com/


Posted By: redback
Date Posted: 05 Apr 05 at 11:28pm
Rubbing compound as used in car body work finishing.  It takes a very thin layer off and if you want a good shine finish with "T Cut".


Posted By: catmandoo
Date Posted: 06 Apr 05 at 1:07pm

oxallic acid is the "mutts Nutts" , the best way to restore white boats to white ,easiest , quickest , unbelievable !

First time I tried it I was gobbsmacked it took me 30 yrs to discover !, being a natural sceptic , I rarely believed the claims of boat cleaners claims and before oxallic never found any particualy effective .

Look out for grp cleaners that contain a high concentration of oxallic acid (check ingrediant list ) .

It does the work of 10 hrs meticullous t cutting (bar blending in scratches) in 10 mins !!!!!!!.

All you do is slapp it on with a big floppy paint brush , have a jaw with a mate for 10 mins and hose off !!!!!!!!! and you will not believe the difference , an instant night and day result !!!

To make matters even better , you can make your own , buy a box of oxallic acid crystals from your chemist and mix up your own - disolve as much as you can into warm water , add detergent to thicken , and your off, I just did a yellowed 32 foot  yacht in 30 mins !!! and made up was probably better than mixes off the shelf

As with all preparations that burnish the top layer of gel coat it is best to apply a layer of polish to seal in the results .This applies to T cutting , polishing pastes etc

Oxallic acid I believe froms from fruit (lemons etc) but the forum nerds will clarify that, it is adsvised to wear gloves , googles, but it only nips a bit ! 

ABOVE ALL , IT REALLY WORKS, CHEAP, EASY , FAST ,ASTONISHING RESULTS, AND I'M DEAD IMPRESSED IF YOU HADN'T GUESSED.

 

 

 

 

 



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Posted By: Buzz
Date Posted: 06 Apr 05 at 1:57pm
Hi catmandoo, you are right Oxalic acid is effective stuff but check out the thread called 'little black marks' for a link detailing what precautions should be taken when using it.


Posted By: redback
Date Posted: 06 Apr 05 at 11:47pm
Oxalic acid, is found in Rhubarb


Posted By: KnightMare
Date Posted: 07 Apr 05 at 3:14pm
yeah its from Rhubarb, And it is classed as highly poisenous.

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http://theramblingsofmyinnergeek.blogspot.com/


Posted By: Pierre
Date Posted: 07 Apr 05 at 3:57pm

From Rhubarb leaves to be exact.......

 



Posted By: Doctor Clifford
Date Posted: 07 Apr 05 at 4:18pm
Use a product called Y10.
Don't know what the ingredients are, but it looks like blue hair gel (if you
use such nonsense) and the hull goes white before your very eyes!
hose it off and Bob is surely your Uncle!
job done..


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regards
Dr. Clifford

take two tablets twice daily


Posted By: stuarthop
Date Posted: 07 Apr 05 at 10:32pm
if its not too bad pressure washing sometimes helps

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Posted By: j5jdh
Date Posted: 15 Apr 05 at 10:26am
I've found using a cutting compound works well - even removes light scratches etc. You can buy it from Northampton sailboats etc - its called 'finishing paste' or something, alternatively, Halfords sell their own brand cutting compound (comes in a yellow tube costs about 5)


Posted By: techtrader
Date Posted: 29 Jun 05 at 10:52am

Hi I am new to this site, so Hello all.

Talking of cleaners I have just used Easy Clean on my saddler. I read it in the May addition of PBO and it was in Sailing Today in June (no I dont read every sailing mag ).  The test results are on their site http://www.avantsupplies.com - www.avantsupplies.com I must admit I am impressed with the results must be the quickest clean up I have ever done. One bottle covered all of my 34 ft hull.

Great site wonder why I Havent heard of it before.



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Regards
Dave


Posted By: Black no sugar
Date Posted: 30 Jun 05 at 8:45am
Hi techtrader and welcome on the forum. You're right, it is a great site and there are topics on just about anything!

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http://www.lancingsc.org.uk/index.html - Lancing SC


Posted By: techtrader
Date Posted: 30 Jun 05 at 10:00am

Thanks Black no sugar ( thats the way I like my coffee to)

I think I have been a sucker to most sailing hype so its nice to buy a product that really works. Now I need something to keep my prop clean. I have tried just about everything from hard racing anti fouling to stove blacking



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Regards
Dave


Posted By: Lucy Lee
Date Posted: 30 Jun 05 at 3:35pm
Originally posted by techtrader

Now I need something to keep my prop clean. I have tried just about everything from hard racing anti fouling to stove blacking

What about vaseline?



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Fly Cherub!


Posted By: techtrader
Date Posted: 04 Jul 05 at 11:30am

Hi Lucy

Tried that a couple of years ago, but no joy   Thanks anyway



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Regards
Dave


Posted By: wallynomore
Date Posted: 15 Jul 05 at 10:50pm
Keeping your prop clean, heard a roomer that black permanent marker pen ink works, discovered when someone wrote on a prop and a year later there was growth on the prop  but not where they had written. After that there is a wonder product called 'prop speed' with a wonder price tag, meant to be the best out there but allegedly keeps it clean for two years.


Posted By: One Eyed Dog
Date Posted: 15 Jul 05 at 11:35pm
Cillit Bang is good for cleaning up old GRP. Worked a treat on an old Laser.

When I used to work in a boatyard they used to mix up a gloop of 50:50 mastic and grease then smear it onto the prop. But whatever you do don't let the fowling settle otherwise it causes pitting and that really messes up a prop. 


Posted By: techtrader
Date Posted: 18 Aug 05 at 4:17pm

Thanks for the replies guy's

Sorry about the delay in coming back Mother in law is in hospital and we are flying backwards and forward to visit.

 Regards

Dave



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Regards
Dave


Posted By: romany123
Date Posted: 12 May 09 at 11:56am
Originally posted by techtrader

Hi I am new to this site, so Hello all.

Talking of cleaners I have just used Easy Clean on my saddler. I read it in the May addition of PBO and it was in Sailing Today in June (no I dont read every sailing mag ).  The test results are on their site http://www.avantsupplies.com - www.avantsupplies.com I must admit I am impressed with the results must be the quickest clean up I have ever done. One bottle covered all of my 34 ft hull.

Great site wonder why I Havent heard of it before.

 

Hi Tech

Just got an email from Avant supplies. They now have a new web site http://www.boat-cleaner.co.uk - www.boat-cleaner.co.uk been buying it for the last 4 years I rate it. they are also adding chandles to the site, whish I wish they had them on their old site. Saves on the postage.  great forum.



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Regards

Dave


Posted By: Stevie_GTI
Date Posted: 13 May 09 at 12:33am
why not just go over the hull with some fine sand paper. Will make the hull smoother, and also clean it....2 birds with one stone


Posted By: romany123
Date Posted: 13 May 09 at 8:47am

Morning Stevie

OK once or twice but if you do it to often you could end up going through the gelcoat.



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Regards

Dave


Posted By: womble12345
Date Posted: 13 May 09 at 12:36pm

Originally posted by Stevie_GTI

why not just go over the hull with some fine sand paper. Will make the hull smoother, and also clean it....2 birds with one stone

I wouldnt do this, in my opinion it is a sure fire way to get osmosis as you shave off the waterproof outer skin and then the hull sucks up water.

 



Posted By: fleaberto
Date Posted: 13 May 09 at 4:37pm
Originally posted by romany123

Originally posted by techtrader

Hi I am new to this site, so Hello all.

Talking of cleaners I have just used Easy Clean on my saddler. I read it in the May addition of PBO and it was in Sailing Today in June (no I dont read every sailing mag ).  The test results are on their site http://www.avantsupplies.com - www.avantsupplies.com I must admit I am impressed with the results must be the quickest clean up I have ever done. One bottle covered all of my 34 ft hull.

Great site wonder why I Havent heard of it before.

Wow, looks great! The hull of my dinghy is reasonably oxidised - mainly at the bow - will this help remove that or will it generally be better to 'Cut & Paste' with two products (my favoured option at the moment tbh)

 

Hi Tech

Just got an email from Avant supplies. They now have a new web site http://www.boat-cleaner.co.uk - www.boat-cleaner.co.uk been buying it for the last 4 years I rate it. they are also adding chandles to the site, whish I wish they had them on their old site. Saves on the postage.  great forum.



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Lightning368 'All the Gear' (409), Lightning368 'Sprite' (101), Laser (big number) 'Yellow Jack', RS Vareo (432)'The Golden Rays'


Posted By: romany123
Date Posted: 13 May 09 at 5:04pm

Hi flea

I got it to get rid of the waterline staining (yellow) which was pertty bad, it got rid of that and the engine exaust stains. Not sure what oxidisation is, but I have been using it ever since.

 



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Regards

Dave



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