I'm Odyssey 1991 hull 369. Starboard window in aft cabin head is loose at the top. What is the best recourse? What kind of sealer is used to bond the window back in place?
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windows
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 windcat1 |
windows |
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Posts: 11 03/13/07 19:23:27 |
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oscar |
Re: windows | #1 | ||
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Posts: 475 03/14/07 03:50:12 |
I'm in the same boat you are (#76). The SB-aft window is loose at the back. It is dry when stationary, but underway the hull motion twists is and there is seepage. PO discharged some caulk on the inside which slows it down but is not a cure.
I have been keeping my eyes open for solutions, obviousl the window has to come out and be re-bedded. One idea that I saw (here?) was to add more and larger fasteners to keep it in place. The sealant is then secondary as far as keeping it in place. I am torn between 5200.....very good adhesion but messy and a bear to remove... and a silicone. Be interesting to see what tothers come up with. |
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azure42 |
Re: windows | #2 | ||
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Posts: 318 03/14/07 06:01:41 |
Windcat,
First -- the good news. Your boat is likely newer than you thought. My hull is 343 and she is a 1992 model. Your hull should be at least a 1992 or a 1993. The bad news is there may be a developing pattern of window sealant failing on our older boats. My starboard aft window also developed a leak along the top leading edge. As a temporary fix I applied 3M sealant (not 5200) into the gap I could open up with gentle finger pressure. This completely stopped the leak for now, but I'm with Oscar -- I'm hoping to read what others are doing to make a more permanent repair. Rod Williams
Azure, #343, 2-cabin Alameda/San Francisco Bay, CA. |
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bimmerboy750 |
Re: windows | #3 | ||
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Posts: 55 03/14/07 07:04:23 |
When re-bedding, allow the caulk to get closer to a full cure before reattaching the frame. The basis of the seal is a mechanical one. You don't want to attach the frame too soon and squeeze out the caulk while it's in a viscous flow state, or the caulk will not be under any significant compression load after its cured, it'll just sit there in a sandwich and be ineffective. The caulk needs to act as a gasket, not as glue. The frame hardware (screws, bolts, nuts, etc.) is there to apply a force of constant uniform pressure on the caulk, and the caulk is there to oppose that force in an amount greater than any hydraulic pressure (water intrusion) subjected to it. I've successfully rebedded very long (4+ feet long) deadlights on another boat using this principle.
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royalserf |
Re: windows | #4 | ||
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Posts: 43 03/14/07 09:08:47 |
My boat (hull #855) had the starboard aft window crack. Under warranty the dealer replaced it per Catalina instructions. They removed the window, cleaned the bedding surface and tried 5200 first. It did not hold. They then tried again using some sealant (that Catalina can tell you what it is) that worked. The key however was the window was held in place for 1 week using 4 screws. At the end of the 1 week cure time, the screws were removed and holes filled with the black sealant. Everything worked great. Key is the window must come completely out and be held in place with screws to allow cure of the sealant.
Fred Drummond Royal Serf Hull #855 2Cabin C/L |
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captnron |
Windows | #5 | ||
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Posts: 51 03/14/07 11:45:43 |
I had good luck bonding a similar type of window on a C&C using the Sikaflex 295UV and their 209 primer, which I think is an adhesion promotor for the plexi to the Sikaflex. I agree with "bimmerboy" about the sealant acting as a gasket and an adhesive. The window needs to float in the frame to allow for expansion and flex, don't squeeze out all the sealant. Take a look at the Sika web site and the 295UV product and download their glazing guide, it has some good tips in it.
It can be a messy job, tape everything inside and out and follow their instructions, if I needed to rebond a window in the coach roof I would use the Sika method. Ron |
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oscar |
Re: windows | #6 | ||
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Posts: 475 03/15/07 04:15:42 |
Interesting! I read between the lines that originally there are no screws in the black windows.....I have 8 in each. Seems PO may have been dealing with this for quite some time...
Thanks for the Sica info, will have to check that out. |
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nickwigen |
Re: windows | #7 | ||
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Posts: 216 03/15/07 06:00:16 |
I'm replacing the lenses in the opening hatches and have done some considerable research about adhesives and sealants. The Sikaflex 295 is one of those recommended. Note that 5200 is NOT recommended with acrylic according to the West Marine application charts.
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windcat1 |
Re: windows | #8 | ||
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Posts: 11 03/15/07 08:09:24 |
Who has Sika? Does west marine carry this stuff? Windcat
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ragtime |
Sikaflex supplier | #9 | ||
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Posts: 133 03/15/07 11:23:27 |
You can get it from Jamestown Distributers. Here is a link. www.jamestowndistributors...atch_type=
Gerry C42 Ragtime |
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sashay567 |
Re: Sikaflex supplier | #10 | ||
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Posts: 191 03/16/07 12:02:47 |
DestinySFO has had his window over the galley replaced, no screws. If I remember, the craftsman who did his window replacement used a double sided sticky tape of the correct thickness to secure the window while the sealant cured. The small squares of double sided tape were left in place and barely visible. I will ping DestinySFO and see if he can't chime in.
Rodney Kidd, C-42 #567 Sashay, 2 Cabin Fin, Marina Village, Alameda, CA
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