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  #191  
Old 07-19-2012
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Re: Bedding Deck Hardware With Butyl Tape

RV repair/supply shops have a similar product but may be of a bit lesser quality.Butyl tape is used extensively on RV's.
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  #192  
Old 07-22-2012
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Re: Bedding Deck Hardware With Butyl Tape

Well, read everyone's thoughts and decided to bed the 4 portlights on my Tartan 27 with butyl tape. Cleaned up the aluminum frames, bought new lexan, and off I went.

80 some degree day, so the butyl was pretty soft.

Now I know why manufacturers stopped using it. It is simple but labor intensive. Smearing this stuff on the surface takes a while and some effort. Then tightening down the screws slowly to squeeze out the excess takes some time. Once tightened, trimming the xcess is a piece of cake.

After using 4200, life caulk or whatever, I'm now a fan apof butyl!

That's if these babies don't leak!
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  #193  
Old 07-23-2012
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Re: Bedding Deck Hardware With Butyl Tape

Quote:
Originally Posted by cnoyes1001 View Post
Great information! I concure with countersinking. I want to order some Bed-it tape but I live in Hawaii. If anyone knows where it is avaliable locally please let me know.
Thanks,
Charlie
I am also in Hawaii and order the tape from Maine Sail- he can ship flat rate USPS box so not expensive (and you know it will be good stuff). Not sure where to buy here in hawaii (no recreational vehicles here like you would see on mainland), just easier to get from Maine Sail.
Regards
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  #194  
Old 07-24-2012
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Re: Bedding Deck Hardware With Butyl Tape

My supply is on its way so I am looking forward to tackling the cleat, stanchion and two windows that are leaking. Once I am proficient and leak proof with those I will reseat the other deck hardware.

When doing the windows I will carefully countersink into the fibreglass as it is not that thick. (see interior shot looking out)

I will also place a bead of the butyl all around the window opening before placing the window.

Do I also create a countersink the holes in the plexi? Right now the screws go through a ring.

Thanks
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  #195  
Old 07-24-2012
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Re: Bedding Deck Hardware With Butyl Tape

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Originally Posted by i_amcdn View Post

Do I also create a countersink the holes in the plexi? Right now the screws go through a ring.

Thanks
I'm no expert, but I know plastic has a large amount of expansion and contraction. I would say that the countersink (fantastic idea I must say) in the fiberglass will stop water from coming inside.

Countersinking the Plexiglas might help increase the likelihood of cracking, the biggest problem with Plexiglas. I'd make the holes in the Plexiglas slightly oversize to allow for the stresses of expansion/contraction, and rely on the fiberglass to keep the water out.

By "rings" do you mean some sort of finishing washer? That would seem like a decent idea to spread the pressure out across a larger area and help reduce cracking. I'm currently working on a Hunter 23 with Plexiglas simply screwed on, no outer perimeter trim or washers. Most of the screws have Plexiglas cracks around them, though surprisingly only one crack leaks.
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  #196  
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Re: Bedding Deck Hardware With Butyl Tape

Correct...finishing washer
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  #197  
Old 07-27-2012
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Re: Bedding Deck Hardware With Butyl Tape

Thank you very much for taking time to explain this so anyone could make this repair!
Well done and very generous to take time to teach all of us who did not know!

Rochelle
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  #198  
Old 07-27-2012
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Re: Bedding Deck Hardware With Butyl Tape

Quote:
Originally Posted by bandaidmd View Post
RV repair/supply shops have a similar product but may be of a bit lesser quality.Butyl tape is used extensively on RV's.
It's the exact same thing.
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  #199  
Old 07-28-2012
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Re: Bedding Deck Hardware With Butyl Tape

Quote:
Originally Posted by chrisncate View Post
It's the exact same thing.
Actually it's not the same.. There are vast quality & consistency differences in butyl tapes just as there are in polyurethane sealants..

This is from a guy who bought RV tape at an RV store then bought Bed-It Tape..

"Hello RC,

Got the butyl rubber in time. Thanks for making the special trip!

Not that I didn’t believe you, but I wanted to check out the two tapes myself. They are two totally different materials. I will be tossing the butyl rubber I bought previously. If you’ll excuse the lousy video, I think you’ll spot your tape.



https://picasaweb.google.com/rmcgill...94158195187106

Thanks for the great product and for your technical tips.

Have a great weekend.

Bob
"
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Last edited by Maine Sail; 07-28-2012 at 03:29 AM.
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  #200  
Old 07-28-2012
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Re: Bedding Deck Hardware With Butyl Tape

I hear you MS, but when you have the right stuff (actual grey butyl- not one of the other variations - I am completely aware of the variants that sit on the same shelf as butyl), it is the same. I have held both your butyl and "mine" in my hands and compared the two, and what I buy is 100% identical.

If it isn't identical, it's probably not actually labeled as grey butyl - it's probably one of the similar variants that sits on the same shelf. A lot of people don't know what they are actually looking at when shopping for butyl for the first time.

Fwiw
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