Bedding Deck Hardware With Butyl Tape - Page 36 - SailNet Community
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post #351 of 398 Old 07-19-2014
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Re: Bedding Deck Hardware With Butyl Tape

I bought a roll from MainSail last year, wondered the same thing as you are right now.

I can't tell you how glad I am to have a roll hanging around. I've dipped into it so many times for different projects. Guess what, still have a fair amount left for more projects. Like the guy above said, it doesn't wear out.

Chris
US Yacht 25 "Chinook"
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post #352 of 398 Old 08-19-2014
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Re: Bedding Deck Hardware With Butyl Tape

MANY Thanks, I now feel confident and competent for the task... And will have to do it ONCE. Excellent info and pictures - I hope I can find other articles as good for the other tasks awaiting me as a new owner...
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post #353 of 398 Old 08-20-2014
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Re: Bedding Deck Hardware With Butyl Tape

+1.
Thanks Mainesail. Ordered your tape, and installed per your instructions last year (after first over-drilling and potting with epoxy).
No leaks.

Why would anyone second guess something that has already been proven in the field?
Two words: El Cheapo.

Not worth the hassle. Just buy the good stuff and follow the detailed instructions, and then Mainesail won't have to answer a bunch of stupid questions online...

Simple as that.
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post #354 of 398 Old 10-09-2014
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Re: Bedding Deck Hardware With Butyl Tape

This is a superb tutorial with excellent photographs, thank you. One question:

Should I line the entire underside of my genoa track (all 3m of it) with tape or can I get away with just doing the bolts? I've done my stay-sail track already with just tape around the bolts and it was easy to do, but only afterwards did it occur to me that perhaps I should have lined the underside.

I recorded me installing my stay-sail track, which you can see here (note that I now have white tape to do the rest of the fittings and I will not be screwing down the bolts just to put them in place as you see here). Jump to 2:08 minutes in:


On various youtube clips I've seen stanchion bases bedded with tape just around the bolts, not the underside of the fitting.

Any thoughts?

Last edited by demonboy; 10-09-2014 at 01:02 AM.
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post #355 of 398 Old 10-09-2014
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Re: Bedding Deck Hardware With Butyl Tape

Bed the entire fitting. You don't want water anywhere underneath any item. For one thing in northern areas it can freeze, causing undue stress on the attachment.

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post #356 of 398 Old 10-09-2014
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Re: Bedding Deck Hardware With Butyl Tape

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Originally Posted by mitiempo View Post
Bed the entire fitting. You don't want water anywhere underneath any item. For one thing in northern areas it can freeze, causing undue stress on the attachment.
Here's the issue though: for every bolt hole there is a hole for the car to lock into. That goes all the way through the track. If I seal the underside that hole remains filled with water.
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post #357 of 398 Old 10-10-2014
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Re: Bedding Deck Hardware With Butyl Tape

I'm a total nitwit with search function, so pardon if a repost:

I'm a total convert with butyl for rebedding. However, had one instance where it didn't seem the good solution. Used a wood base to raise a cheek block. I did everything else right....drill holes in deck...dremel then re-epoxy holes.

However, the butyl wouldn't stick or conform to the wood, at all. It was mahogany, with a linseed oil finish. Could it have been the finish? Ended up having to use the dredded 3-m product. Thanks for any feedback.

Chris
US Yacht 25 "Chinook"
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post #358 of 398 Old 10-10-2014
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Re: Bedding Deck Hardware With Butyl Tape

Budvar, I would bet it was the finish. Not much sticks to oil (which is, actually, why you used it in the first place, though that may not seem immediately apparent).

Demon, I think you want tape under any portion that is around/near the deck penetrations. For the track, there may be drainage areas for some of the track holes (the ones that aren't screw holes). I'd probably do around those so there is good drainage. That being said, water being trapped in an open space isn't really a problem. If it freezes, it will expand out of the space, so no biggie. If it's trapped in a confined space (think of water that has wicked into the cellular structure of wood, for example), then as it freezes it expands and distorts/wrecks the space.

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post #359 of 398 Old 10-15-2014
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Re: Bedding Deck Hardware With Butyl Tape

I have read most of this highly informative post, skipped the middle just for time sake. I have some deck leaks in a new to me CS30 1987. I will start pulling panels and hosing it down but can someone tell me if my Boat was sealed with the Butyl I did read CS used it to a point, after that what did they use ? I (hope) its the Genoa tracks since I'm sure they are past the recommended rebedding cycle but are there other trouble areas that may be more likely the cause. There is a noticeable amount of leakage either when sailing to weather or during a hard rain. Its NOT the chain plates.

Although belated thanks to Maine sail for a truly knowledgeable post.

FWIW I'm not new to Sailing but I am new to leaky boats.
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post #360 of 398 Old 10-15-2014
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Re: Bedding Deck Hardware With Butyl Tape

You should be able to reach up inside the hull-deck joint and feel around. if it is butyl tape it will still be quite soft and rubbery.
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Back home on Lake Ontario after something over 36,000 nm circumnavigator. Not surprisingly there is a lot of stuff I want to get done on Ainia both cosmetically and functionally. Getting an early start so it will be ready to go for next summer (Lake Superior?).
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