Need recomendation for glue

[sailingdog]

One problem I see with using either the buckets or the storm duffles, is that they'll both tend to trap a lot more water against your gear, where the netting will let your gear dry out a lot better. Mold, mildew and corrosion are just some of the problems I see happening if the gear can't dry out properly. Let's face it, these lockers on most boats get water in them at some point...and if the water can't get out easily, it's going to cause problems.

 

[Hermit Scott]

5200...the devil????

What's the deal with 5200. I had a chain plate leaking that is attached to a bulkhead. The water corroded my marine ac controls too, upsetting. I took it all apart wire wheeled everything clean, used acetone to clean everything and filled everything full of 5200. I haven't tighteded the shroud back yet because I accidentally got the type that cures in 7 days. Did I make a mistake using 5200 for this application?

 

[sailingdog]

Re: 5200...the devil????

Hermit-

The problem with 5200 is that it is too strong and inflexible an adhesive sealant for most things on a boat. If the part is something that is highly loaded or moves a bit, you want a sealant/bedding compound that can stretch and flex a bit more than 5200 does. If the part is something that might need maintenance, repair or replacement, then 5200 is too strong to use, since you can often damage the underlying fiberglass trying to remove something bedded with 5200. The adhesive strength of 5200 is often higher than the tensile strength of the laminate itself.

BTW, when you rebedded your chainplate, I hope you checked the deck to see if the core material was sealed, if the chainplate passes through a cored section of deck. If not, and you have a leak in the future, taking it apart to correct it is going to be a gold-plated b!tch, and the deck will likely start to delaminate there.

 

[oldsalt]

Old salt reads the comments

I just got back to see the responses to my questions...
I can see why I have a problem.
1. I did nothing to prep the surface.
2. I used construction glue from Menards
Your comments will cause me to redo the entire project.
To answer some of the questions - the blocks were soft wood and the interior surface came off with the block - the wood did not fail.
I am going to rethink the entire problem in light of your feedback. Thanks for the responses.
Dave

 

[Hermit Scott]

Well...

The chain plate has an extention that goes down the bulkhead about 18". On the top of that in the boat, it has a plate 3"x4" that sits flat against the deck. On the top, there is a a cover plate. There is a 1/2" by 2" part that sticks through the hull and the shroud mounts to the top ot that. I filed inside that slot in the hull to clean it out. Every surface is coated with 5200. I even filled the slot with 5200, then coated the cover plate that sits on the deck with 5200. Every face of every connection was wire wheeled, acetoned and then coated with 5200. I thought it would be like silicone, so I made sure every surface was covered and the hole in the deck was completely filled.
So I should sell the boat rather that try to take that chain plate out?

 

[Ross]

The chain plate has an extention that goes down the bulkhead about 18". On the top of that in the boat, it has a plate 3"x4" that sits flat against the deck. On the top, there is a a cover plate. There is a 1/2" by 2" part that sticks through the hull and the shroud mounts to the top ot that. I filed inside that slot in the hull to clean it out. Every surface is coated with 5200. I even filled the slot with 5200, then coated the cover plate that sits on the deck with 5200. Every face of every connection was wire wheeled, acetoned and then coated with 5200. I thought it would be like silicone, so I made sure every surface was covered and the hole in the deck was completely filled.
So I should sell the boat rather that try to take that chain plate out?

Alan Vaitsis had a boat brought to his yard for work and he was going to remove the bowsprit. So he drew out all of the bolts and put the yard crane on the bow sprit and lifted the bow of the boat off the blocking. Next they cut the bow sprit into six inch segments and tried again, the first six inches pulled off. The rest they had to chop off in small pieces. 5200 is permanent and durable. Also it stretches 5:1 as demostrated by pulling semicured slugs out of the tip on the tube.