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Gelcoat Repair

 
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Tug



Joined: 22 Jun 2007
Posts: 983
City/Region: Sault Ste. Marie
State or Province: ON
C-Dory Year: 1985
C-Dory Model: 22 Angler
Vessel Name: Drifter
Photos: Drifter
PostPosted: Sun Nov 07, 2010 8:05 pm    Post subject: Gelcoat Repair Reply with quote

Today when i was under the boat examining the hull i noticed that there was some spots where the gelcoat was worn down to what appears to be a black hard material. Its is on the starboard bottom edge of the hull, its seems to be a wear spot but i am not sure what caused the wear. Seeing that i will be applying Interprotect 2000E next Spring can i just apply 2000E over this spot. There are not holes or gouges just a smooth worn spot.Tug
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Sea Wolf



Joined: 01 Nov 2003
Posts: 8650
City/Region: Redding
State or Province: CA
C-Dory Year: 1987
C-Dory Model: 22 Cruiser
Vessel Name: Sea Wolf
Photos: Sea Wolf
PostPosted: Sun Nov 07, 2010 8:41 pm    Post subject: Reply with quote

"black hard material" ='s ???

If it were a more recent boat, it might be carbon fiber, but ???

Joe. Disgust Question

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Lake Shasta, California

"Most of my money I spent on boats and women. The rest I squandered'. " -Annonymous
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Tug



Joined: 22 Jun 2007
Posts: 983
City/Region: Sault Ste. Marie
State or Province: ON
C-Dory Year: 1985
C-Dory Model: 22 Angler
Vessel Name: Drifter
Photos: Drifter
PostPosted: Sun Nov 07, 2010 9:02 pm    Post subject: Reply with quote

My thoughts exactly, i e-mailed the previous owner and he said that the hull has never been painted and it was the original gelcoat on the boat. Could the black colour be just darkened gelcoat from wear, there is a large black rubber roller on the back of the trailer for launching and retrieval, just a thought. I will crawl under the boat tomorrow and have another look.

Just Goggled......black hard material under a boat's gelcoat and got something to the effect.....in gelcoat repair...if sanding and you come to a dark material it means that you are almost through the gelcoat to the laminate.
Tug
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Captains Cat



Joined: 03 Nov 2003
Posts: 7313
City/Region: Cod Creek>Potomac River>Chesapeake Bay
State or Province: VA
C-Dory Year: 2005
C-Dory Model: 22 Cruiser
Vessel Name: Captain's Choice II
Photos: Captain's Cat
PostPosted: Mon Nov 08, 2010 8:27 am    Post subject: Reply with quote

Tug wrote:
there is a large black rubber roller on the back of the trailer for launching and retrieval, just a thought. I will crawl under the boat tomorrow and have another look.

Tug


Take something with you when you crawl under, I'm betting it's rubber from that roller!

Charlie

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CHARLIE and PENNY CBRAT #100
Captain's Cat II 2005 22 Cruiser
Thataway (2006 TC255 - Sold Aug 2013)
Captain's Cat (2006 TC255 - Sold January 2012)
Captain's Kitten (1995 CD 16 Angler- Sold June 2010)
Captain's Choice (1994 CD 22 Cruiser- Sold Jun 2007)
Potomac River/Chesapeake Bay
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matt_unique



Joined: 27 Feb 2007
Posts: 1881
City/Region: Boston
State or Province: MA
C-Dory Year: 2007
C-Dory Model: 255 Tomcat
Vessel Name: Napoleon
Photos: Napoleon
PostPosted: Mon Nov 08, 2010 8:40 am    Post subject: FG Reply with quote

It's the fiberglass beneath the gelcoat.

As long as there is no hole you are OK - just annoyed to have the chip/wear hole Smile You can put whatever you want over it but of course only gelcoat will repair the spot to the original look.

If the wear is out of sight I would not bother with a gelcoat repair. If it is a wear spot I would scuff the area, clean out the dust, and cover with epoxy resin.

This season I had a sailboat drift into Napoleon while on the mooring. It made a few scratches, one chip, and also bent one of my stanchions. Grrrr....I have since moved my mooring farther away from the rest. The damage was slight and you would not notice unless I told you where to look but it is of course aggravating.

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Former owner of Napoleon (Tomcat) Hull #65 w/Counter Rotating Suzuki 150's.
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sjboysen
C-Dory Factory Representative


Joined: 15 Jun 2009
Posts: 141
City/Region: Bellingham
State or Province: WA
Photos: Triton Plant Photos
PostPosted: Mon Nov 08, 2010 9:03 am    Post subject: Reply with quote

Tug,

I normally would like to see a picture of the area before I give hard and fast advice, with that stated though, I would recommend cleaning the area to make sure that it is actually a wear area, and if it does prove to be worn down gelcoat to the laminate, and since you are bottom painting, here are some simple steps:

1) Sand the worn down area with some 150 grit sandpaper.
2) Clean the area of dust and debris, then hand paint the area with gelcoat.
3) Bottom paint

This will protect the suspect area, and since you are bottom painting you don't need to spray the gelcoat.

I hope that this information is helpful, and if you have any questions just give me a call.

Sincerely,

Scott
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Tug



Joined: 22 Jun 2007
Posts: 983
City/Region: Sault Ste. Marie
State or Province: ON
C-Dory Year: 1985
C-Dory Model: 22 Angler
Vessel Name: Drifter
Photos: Drifter
PostPosted: Mon Nov 08, 2010 9:22 am    Post subject: Reply with quote

Thanks for all the great help! I am glad to hear that it is mostly a cosmetic problem and can be fixed. Do i have to apply epoxy resin or gelcoat over the area if there are no holes in the laminate. Can i not just sand and then apply InterProtect 2000E over it.If i need to apply some sort of epoxy resin can i use The West System...105 Epoxy Resin....205 Hardener with an additive for more strength and hardness. Thanks Tug
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sjboysen
C-Dory Factory Representative


Joined: 15 Jun 2009
Posts: 141
City/Region: Bellingham
State or Province: WA
Photos: Triton Plant Photos
PostPosted: Mon Nov 08, 2010 10:14 am    Post subject: Reply with quote

Tug,

If you have worn through to the laminate layers then YES you will need to gelcoat the worn areas prior to bottom paint. You do not have to use a resin coat prior to gelcoating.

Scott
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Tug



Joined: 22 Jun 2007
Posts: 983
City/Region: Sault Ste. Marie
State or Province: ON
C-Dory Year: 1985
C-Dory Model: 22 Angler
Vessel Name: Drifter
Photos: Drifter
PostPosted: Mon Nov 08, 2010 10:20 am    Post subject: Reply with quote

Scott would Hi - Bond White Gel-Coat with Wax be ok.Will order some today. Thanks Tug
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sjboysen
C-Dory Factory Representative


Joined: 15 Jun 2009
Posts: 141
City/Region: Bellingham
State or Province: WA
Photos: Triton Plant Photos
PostPosted: Mon Nov 08, 2010 12:12 pm    Post subject: Reply with quote

Tug,

That would be fine, any gelcoat would suffice.

Scott
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Tug



Joined: 22 Jun 2007
Posts: 983
City/Region: Sault Ste. Marie
State or Province: ON
C-Dory Year: 1985
C-Dory Model: 22 Angler
Vessel Name: Drifter
Photos: Drifter
PostPosted: Mon Nov 08, 2010 1:42 pm    Post subject: Reply with quote

Buying , selecting bottom paint , primer, gel-coat was just about as bad as getting a tooth pulled. I ordered all i will need to tackle the job next Spring, may before if i can find a garage.Putting the bottom paint/primer on will be the easier of the two things to do..I will take pictures of the process. Thanks Again. Tug
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thataway



Joined: 02 Nov 2003
Posts: 20778
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
PostPosted: Mon Nov 08, 2010 5:18 pm    Post subject: Reply with quote

The boats are sprayed with an "occlusive" color--often the strip color, gel coat before the first layer of glass is laid. This was started many years ago, because owners were upset that they could see light thru the hull, especially with a white gel coat.

If you are going to put an epoxy barrier coat on, you can put this right over the dark area. We have had RIB's which we beached on rocks etc, regularly. Each fall we would sand the bottom area smooth, put on epoxy resin, and if any large gouges or wear, another layer of sacrificial cloth.

The 2000e is an epoxy and will seal the glass laminate as well as gel coat (or better)--however I would put several coats on this area--be sure and let it dry and wash it between applications, so that any amine on the surface does not cause poor adherance. An alternate would be to do the gel coat or any of the epoxy resins. I often use West Systems, with some cabisol (fumed silica) and high density filler if there was much wear. This is then sanded smooth before application of the 2000e.

_________________
Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
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Home port: Pensacola FL
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Jack in Alaska



Joined: 17 Aug 2004
Posts: 1190
City/Region: Anchorage/Ninilchik
State or Province: AK
C-Dory Year: 2005
C-Dory Model: 26 Pro Angler
Vessel Name: HIGH TIDE II
Photos: HIGH TIDE II
PostPosted: Tue Nov 09, 2010 12:49 am    Post subject: Reply with quote

Tug,

My 1983 Classic had the same problem on the starboard side towards the front. It was caused by tying up the boat against the bank in a tidal creek with a gravel channel. Over the years the gelcoat wore off leaving the edge smooth and black just as you described. I put gelcoat on it several times but it wore off again from the same reason.
Eventually I stopped leaving it in the river and loaded it on the trailer each time.
It never seemed to hurt the boat and it is still making trips in the sea w/o problems.

Jack

_________________
On the HIGH TIDE-II, wife Carolyn and I.....Another summer fishing on the HIGH TIDE II in the Cook Inlet at Cape Ninilchik, Alaska.

HIGH TIDE-II; 2005 26' ProAngler; 2003 200 Honda / 2009 9.9 Honda high thrust
No. CD026021I405; AK-5008-AK
MSSI No. 338143486(cancelled)

HIGH TIDE; 1983 Angler Classic 22'; 90 Honda/ 9.9 Tohatsu-sold 2009 to son Dan (flatfishfool)
Stolen & stripped in Aug. 18
Bare hull & trailer sold in Nov.
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Tug



Joined: 22 Jun 2007
Posts: 983
City/Region: Sault Ste. Marie
State or Province: ON
C-Dory Year: 1985
C-Dory Model: 22 Angler
Vessel Name: Drifter
Photos: Drifter
PostPosted: Tue Nov 09, 2010 9:28 am    Post subject: Reply with quote

Jack.. The black mark on my boat is only about 2 inches long and 1/8 inches wide and may have been caused by gravel wear as well or by that large roller at the back of my trailer.I will have to examine that roller more closely. After i repair the area and cover with gel-coat, than sand i will apply InterProtect 2000E than Bottom paint. She will look better than new. Tug
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