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jep111
Joined: 04 Feb 2012 Posts: 83 City/Region: Carmichael
State or Province: CA
C-Dory Year: 1992
C-Dory Model: 16 Cruiser
Vessel Name: Mas Que NADA
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Posted: Tue Mar 06, 2012 1:37 pm Post subject: Edge trim |
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The edge trim on my 16 Cruiser was looking pretty uneven and pulling away in the inner radius curves, so I take it off... and under it is silicone sealant. Was this done by the factory? And is there any easy way to get it off? It didn't stick to the edge trim, but it sure stuck to the fibreglass!
All I can think of is to use a razor blade and try not to scratch the gelcoat. The backside is pretty rough, though, and I don't think the razor blade will be too effective.
And lastly, why would anyone use silicone on a boat?
John |
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colobear
Joined: 23 Jan 2005 Posts: 2154 City/Region: Denver
State or Province: CO
C-Dory Year: 2006
C-Dory Model: 22 Cruiser
Photos: C-Cakes
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Posted: Tue Mar 06, 2012 2:19 pm Post subject: |
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Would you explain what you mean by "edge trim"? Do you mean pinstriping or wood trim in the cabin, etc. _________________ Patti and Barry
formerly C-Cakes, now
rving around N. America |
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C-Otter
Joined: 02 Nov 2003 Posts: 211 City/Region: Superior
State or Province: WI
C-Dory Year: 1985
C-Dory Model: 22 Classic
Vessel Name: C-Otter
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Posted: Tue Mar 06, 2012 2:24 pm Post subject: |
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I think he means the black plastic strip that covers the top of the transom. C-Otter |
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thataway
Joined: 02 Nov 2003 Posts: 20814 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Tue Mar 06, 2012 2:40 pm Post subject: |
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yes, cutting the worse off with a razor blade, and then using one of the Mr Clean erasers is the best way to get rid of the silicone.
Why use silicone? Good question--and for the most part silicone is not a good bedding compound (although it appears that many of deck fittings on the 2006 C Dory 22 had silicone used). In the trim case, it is used as a "glue"--and fairly effective as that. The problem is that once you have used silicone, it is difficult to get other adhesives or more silicone for that matter to stick to it. Silicone or Silicone/urethane combo is used under plastic hatches on a regular basis. Structural silicone adhesives are used for many applications, including bedding windows. Some of these commercial products have far greater adhesive properties than what you might get from West Marine or Home Depot. I had used it for bedding lexan windows on the Cal 46. 20 years later, these windows are still in place, and not leaking. I accidentally got a "glob" on some SS rigging. Even after 6 years of sailing and over 30,000 miles, that glob was still there. It would have to be cut off at some point.
To rebed the trim--I probably would use silicone adhesive again. _________________ 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
KA6PKB
Home port: Pensacola FL |
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jep111
Joined: 04 Feb 2012 Posts: 83 City/Region: Carmichael
State or Province: CA
C-Dory Year: 1992
C-Dory Model: 16 Cruiser
Vessel Name: Mas Que NADA
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Posted: Tue Mar 06, 2012 3:47 pm Post subject: |
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Thanks for the replies!
I do mean the black (pvc? vinyl?) push-on edge trim that C-Dory used to finish the fibreglass edges.
Bob, are you saying the factory would have done this? Like I said, it didn't stick to the edge trim, so it didn't succeed as an adhesive. I was under the impression that this type of trim wouldn't need bedding or glue...
Trim-lok just seems to show it being pushed on or hit with their expensive pneumatic hammer...
Thanks again!
John |
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thataway
Joined: 02 Nov 2003 Posts: 20814 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Tue Mar 06, 2012 4:17 pm Post subject: |
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Yes, I suspect the factory did this. They used silicone and Bostic sealant of rmany uses. The problem with the trim is that it is made for one width of bulkhead--there are several different widths available. But often glass is not uniform thickness--especially near the edge of the mold. If properly used, and the proper silicone, it should stick to the trim inside. |
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jep111
Joined: 04 Feb 2012 Posts: 83 City/Region: Carmichael
State or Province: CA
C-Dory Year: 1992
C-Dory Model: 16 Cruiser
Vessel Name: Mas Que NADA
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thataway
Joined: 02 Nov 2003 Posts: 20814 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Tue Mar 06, 2012 5:45 pm Post subject: |
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Good product. You still have to have the appropriate size (measured) with calipers--and hope the glass is consistent size. One problem can be if the edge is tapered, rather than square--ie narrowing as it comes to the edge. |
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chriscarrera
Joined: 01 Dec 2010 Posts: 96 City/Region: Bellingham
State or Province: WA
C-Dory Year: 2006
C-Dory Model: 255 Tomcat
Vessel Name: Carrera
Photos: Carrera
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Posted: Tue Mar 06, 2012 6:22 pm Post subject: |
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I've noticed a lot of silicone used on my 2006 tomcat. Had a leaking front window in the bunk, pulled it out, just bedded with a bunch of silicone. In this application it appeared rather shoddy.
I like 4200 for stuff that might be removed and 5200 obviously for more permanent stuff when bedding. _________________ "Moore-on" Moore 24
"Carrera" 2006 Tomcat |
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