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  Topic Review (Newest First)
1 Day Ago 02:47 AM
backpacker6794 In Lowe's you can buy Rubber Electric tape its self ashearing for usex in comercial elect. panels..Which I've Used For Years. NEVER A Leak We Own 5 boats. The stuff is made by 3m and will be where the electrical tools are
1 Week Ago 11:58 AM
loeb
Re: Bedding Deck Hardware With Butyl Tape

Thank you for this article. You are absolutely spot on with your advice. I've always said that overused adhesive bedding compounds/sealants are the worst thing you can do to the next owner of your boat.

Butyl Rubber Tape is one of a sailors best kept secrets. I'm surprised that Dolphinite hasn't tried branding it.
2 Weeks Ago 02:35 PM
tzink
Re: Bedding Deck Hardware With Butyl Tape

Quote:
Originally Posted by BubbleheadMd View Post
I bedded two wooden cabin top grab rails with it, and haven't encountered any leaks.

As long as the wood is sanded flat on the mating surface, I can't imagine why it would matter. Hell, if you're really worried about it, simply paint a layer of epoxy on the mating surface of the wood. Once it cures, mount it.
That's basically what I did, only I put 4 coats of varnish on the surfaces of the wood that are bedded. We'll see how it holds up.
2 Weeks Ago 03:38 PM
therapy23
Re: Bedding Deck Hardware With Butyl Tape

It works just as well with uneven surfaces. It is amazing stuff.
2 Weeks Ago 03:22 PM
BubbleheadMd
Re: Bedding Deck Hardware With Butyl Tape

Quote:
Originally Posted by tzink View Post
I'm curious what your bad experience was with the wood-on-gelcoat application, as I just bedded two large (5"x8') sections of wood on gelcoat with Butyl.
I bedded two wooden cabin top grab rails with it, and haven't encountered any leaks.

As long as the wood is sanded flat on the mating surface, I can't imagine why it would matter. Hell, if you're really worried about it, simply paint a layer of epoxy on the mating surface of the wood. Once it cures, mount it.
2 Weeks Ago 09:44 AM
engineer_sailor
Re: Bedding Deck Hardware With Butyl Tape

Great experience with butyl tape (bought from Mainesail). Biggest learning curve was using the proper amount and pre-shaping it before fitting the part. In one or two cases, the bolts were just long enough (not serious load bearing so no worries) to catch a thread on the bolt. Way less messy than polysulfide
2 Weeks Ago 09:31 AM
TakeFive
Re: Bedding Deck Hardware With Butyl Tape

Quote:
Originally Posted by markloudin View Post
Professional tutorial instructions with complete references to technique, theory, material lists, and tools. Superlative!
...yet some still ignore the advice and buy the cheap stuff from the RV store, then condemn all butyl tape.
2 Weeks Ago 08:20 AM
markloudin
Re: Bedding Deck Hardware With Butyl Tape

Professional tutorial instructions with complete references to technique, theory, material lists, and tools. Superlative!
3 Weeks Ago 11:40 AM
tzink
Re: Bedding Deck Hardware With Butyl Tape

Quote:
Originally Posted by budvar View Post
I'm definitely a convert. Butyl works as described, at least for me. The only time it didn't was with wood against the gelcoat topside. Not sure why floater has had the problems he has had. Look at this thread...38 pages! Thanks MainSail!
I'm curious what your bad experience was with the wood-on-gelcoat application, as I just bedded two large (5"x8') sections of wood on gelcoat with Butyl.
3 Weeks Ago 10:50 AM
Maine Sail
Re: Bedding Deck Hardware With Butyl Tape

Quote:
Originally Posted by BubbleheadMd View Post
I started with automotive butyl and it did indeed, thin out in the heat and eventually allow a leak.
I bought Maine's butyl and I'm working on my second summer with no thinning out, no sagging and no leaks.

Chesapeake summers get into the 90's, sometimes pushing 100F with high humidity.
Two rolls of this stuff is enough to re-bed all of the hardware on my boat, twice over. I doubt I'll ever use it all.
But it will last years, as opposed to weeks, once opened and you can always share it with friends too....... (wink)

I have mentioned many times before that Bed-It tape is specifically formulated & manufactured for this purpose. It is also made right here in the USA by USA workers, including the packaging.

Years ago, before EPA regulations got much stricter, there were a number of decent butyl tapes and they were much easier to find. Today there are HUNDREDS of formulations all in an apparent race to compete for the crappiest product on the market award.. (wink)

It is actually very frustrating for me as I was the one who wrote the "how to" on this stuff, introduced tens of thousands of boaters to "bedding with butyl" and now my competitors (following on my heels) are giving the entire process a bad name by selling low grade products for huge mark ups..

Most of the butyl tapes you will find are not good performing products for this application, I know I have tested nearly all of them in my lab and compared them to the Bed-It formulation.
Here's a thought...

Would you use this "polyurethane sealant" on your boat?


or something like this?
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