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Unpaid Intern
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Discussion Starter · #1 ·
This might ultimately be a question for Maine Sail, but I'm sure others know as well. I've read a good bit about butyl tape on Sailnet, and have discovered that at least some of my boat's hardware was bedded with it, and definitely the hull-to-deck joint.

I've also read here that some things are called "butyl tape" but aren't really.

So I went to my local RV shop and found this stuff, which is off-white/beige, and I'm very happy about that. Should blend nicely. It's labeled as "Butyl Tape", and feels like the putty that shows up oozing from stuff on my boat.

Is this the right stuff?

By the way, if it IS the right stuff, should I use butyl tape to rebed my in-board, deck-mounted, genoa sheet tracks? They are through-bolted and need to be rebedded.





Thanks!
-J
 

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Irrationally Exuberant
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Pretty much looks like the stuff Jos, though yours appears thicker and lighter colored than what I have. Mine came in a paper-backed roll like that. The stuff should be quite sticky.

BTW, it's what I'll be using to rebed my genoa sheet tracks sometime this year.
 

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Telstar 28
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you're good to go... it's really easy stuff to clean up too...
 

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Unpaid Intern
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Discussion Starter · #5 ·
Sweet. I wanted some stuff that was thinner, so I'll probably have a lot of "ooz" with this stuff when I tighten down hardware, but I think it'll work just fine. I'll use lots of painters tape.

As for genoa tracks, would you use this on the bolts too? I was figuring I'd wrap some around the bolts near the head before tightening everything down. Is this what I should use, or should I use a different sealant at the tops of the bolts?

Thanks!
-J
 

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No tape. Trim with a knife a few minutes after tightening.

Sweet. I wanted some stuff that was thinner, so I'll probably have a lot of "ooz" with this stuff when I tighten down hardware, but I think it'll work just fine. I'll use lots of painters tape.

As for genoa tracks, would you use this on the bolts too? I was figuring I'd wrap some around the bolts near the head before tightening everything down. Is this what I should use, or should I use a different sealant at the tops of the bolts?

Thanks!
-J
Only light pressure is needed. The tape will just give it something to stick too, in my opinion.

Yeah, same stuff under the bolts.

My favorite uses are stanchion bases and running lights. Consider something else (3M 4200?) where adhesive is needed.
 

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Unpaid Intern
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Discussion Starter · #7 ·
Only light pressure is needed. The tape will just give it something to stick too, in my opinion.

Yeah, same stuff under the bolts.

My favorite uses are stanchion bases and running lights. Consider something else (3M 4200?) where adhesive is needed.
Thanks pdqaltair. I've been using 3M 101 so far in places where I need adhesive, like the chainplate covers, which aren't through-bolted on my boat, so butyl wasn't recommended. Of course, I'm talking all deck stuff--I haven't done any real work below the waterline yet.
 

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'87 Pearson 27'
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I found 4" wide x 1/16" thick gray from a company called permatite. Since they only sell it in case of 200' rolls i had to find a distributor who was nice enough to have Permatite run me a sample about 12' long. it is great stuff
 

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I found 4" wide x 1/16" thick gray from a company called permatite. Since they only sell it in case of 200' rolls i had to find a distributor who was nice enough to have Permatite run me a sample about 12' long. it is great stuff
I thing Grainger sells a very similar product that us wide and thin.

The op's stuff looks like butyl but it is quite thick..
 

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Only light pressure is needed. The tape will just give it something to stick too, in my opinion.

Yeah, same stuff under the bolts.

My favorite uses are stanchion bases and running lights. Consider something else (3M 4200?) where adhesive is needed.
I'll have to look for some, good idea for running lights.

slight thread drift ... I used 3M 4000 to bed my stanchions ... less permanent than 4200 or 5200 and with more UV protection ... I let it set up for a day snugged just slightly, to form a gasket, then tightened it up 24-48 hrs. later.

Jon
 

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Jon—

You're generally far better off countersinking the fastener holes slightly and then applying sealant and tightening down the bolts completely, rather than doing the two-step process you used. The problem with the two-step process is that you have a very high chance of breaking the seal with the sealant if the bolts rotate even a bit.
I'll have to look for some, good idea for running lights.

slight thread drift ... I used 3M 4000 to bed my stanchions ... less permanent than 4200 or 5200 and with more UV protection ... I let it set up for a day snugged just slightly, to form a gasket, then tightened it up 24-48 hrs. later.

Jon
 

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Jon—

You're generally far better off countersinking the fastener holes slightly and then applying sealant and tightening down the bolts completely, rather than doing the two-step process you used. The problem with the two-step process is that you have a very high chance of breaking the seal with the sealant if the bolts rotate even a bit.
we countersunk, too, but good point.
 

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'87 Pearson 27'
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I thing Grainger sells a very similar product that us wide and thin.

The op's stuff looks like butyl but it is quite thick..
What Grainger sells has is only sticky on one side. The other side has the the tape/cover adhered to it for using as a roof patch. I bought some and took it back. It is unusable for bedding. Permatite makes it and that is how i got their name
 

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Unpaid Intern
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Discussion Starter · #14 ·
So where are folks getting thinner butyl tape (that is the correct stuff)? I realize the stuff I bought is a little thicker, but I really just needed some this weekend to rebed a cleat, and it'll work fine for that.

But in the long run, I'd like to get some that is a little more usable. Any suggestions on where I can buy this? I'm in the Annapolis area, if there's someplace locally, or online would be fine too.

Thanks!
-J
 

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Unpaid Intern
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Discussion Starter · #15 ·
Hey, digging up this old thread of mine--hope you don't mind. I have been using the butyl tape I original posted about. It's fine, but as Maine Sail pointed out, it's a bit thick, so it takes longer to get hardware prepped. I haven't been able to find thin stuff locally. Maine Sail posted about Grainger having it online, but then jackytdunaway mentioned it's not the right stuff (might just be a different product they are each talking about?).

Can someone steer me in the right direction to get thin butyl tape (in a light color, not black) online?

Thanks for your help!
-J
 

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Discussion Starter · #17 ·
Thanks FarCry. Any idea how thick that stuff is (it doesn't say on the site)? I already have butyl tape--I'm looking for the stuff that's 1/16" thick so I don't have to keep rolling it out like dough to use what I have. The stuff on Camping World looks a bit like what I already have.
 

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Courtney the Dancer
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Home Depot carries it (or at least they did last year). It was thinner than OP had and works great.
 

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Discussion Starter · #19 ·
Thanks for the help. Sorry, I'm being so picky!

So far, I have not been able to locate it at my local Home Depot. I'll check again, but ideally, I'd like to find an online source and just order it.

It's not THAT big a deal. I have stuff I can use. Just looking for something that will cut my work time down because I have a lot of rebedding to do! :D
 

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Joz—

Call up your local glass repair shop. Many of them will have the stuff you need in stock or can order it for you. RV dealerships will often have it too.
 
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