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Go Back   SailNet Community > On Board > Gear & Maintenance > Bedding Deck Hardware With Butyl Tape
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Topic Review (Newest First)
2 Hours Ago 07:32 PM
Re: Bedding Deck Hardware With Butyl Tape

Weatherproof speakers should have a weather tight seal included. Speaker vibration could cause butyl tape to creep would be my concern
3 Hours Ago 06:12 PM
Re: Bedding Deck Hardware With Butyl Tape

I'm on lake Champlain in VT, so it's mostly rain water with minimal spray. Just figured I'd check since I have 4 rolls at the moment.
5 Hours Ago 04:56 PM
Re: Bedding Deck Hardware With Butyl Tape

Are your speakers in an area that gets a lot of spray or just rain water. I am not a fan of cutting holes (not saying you cut them) especially for something like that. I know there are speakers rated for Boats but I have never used them maybe there is a built in seal for the deck penetration. I don't see why butyl will not work I have used it on many deck hardware rebeds and its the right stuff.
9 Hours Ago 12:50 PM
Re: Bedding Deck Hardware With Butyl Tape

I used Maine sail's method on my several leaking deck hardware. Works just as he said. Perfect. Stopped several leaks I had. Thank you for the great advice.
9 Hours Ago 12:27 PM
Re: Bedding Deck Hardware With Butyl Tape

Might work. But the speaker mounting design may not develop enough force to squeeze the butyl. Maybe too flimsy between the smallish screws. Try a tiny 1-3mm (1/16 to 1/8") rolled bead of butyl in just the right spot - less to squeeze equals more sealing force.
10 Hours Ago 11:46 AM
Re: Bedding Deck Hardware With Butyl Tape

Anyone ever use this for sealing exterior speakers?
10-15-2014 03:01 PM
Re: Bedding Deck Hardware With Butyl Tape

Very probably butyl.
10-15-2014 02:44 PM
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.
10-15-2014 01:08 PM
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.
10-10-2014 04:27 PM
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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