What type caulk?
 

The kitchen is almost done so I'm starting to prepare for my spring boat projects. I'm going to replace all of my fuel lines. I'll have to remove the tank cover, what caulk should I use to reseal this cover? Bill Mc ;D

Re: What type caulk?
 

Mac, I think 3M's 4200 is the stuff you seek... ;D...

Re: What type caulk?
 

4200, 5200 its all good!! But try for the fast cure!! at least with 5200 if you don't get it it will cure for days!!

Re: What type caulk?
 

Wouldn't you want to use something a little less permanent (maybe not) or more flexible than 4200 or 5200 to caulk with?
I don't know. Just curious. ???

Re: What type caulk?
 

I used 4200. Its rubbery when cured like silicone. It yellows with dirt etc but cleans up nice and white. Dont forget to lay a piece of 200 lb mono in the gap all the way around. That way, if you ever have to remove it, just pull up the mono and it will cut the sealant all the way around for you.

Re: What type caulk?
 

thats an excellent idea fillet ,is that your own?

Re: What type caulk?
 

Wow that is a good Idea!!!!!!!!!!!!!!

If you send that to On the water they will give you a free reel if they use it

Re: What type caulk?
 

From what I have heard, use 4200 on things that you want to come apart later on. 5200 is more of a permament fix., Just my.02.
Great idea with the 200 lb. line!

Re: What type caulk?
 

They sell a release stuff to get 5200 soft to get it apart again.
But the line trick is the thing to do!!

Re: What type caulk?
 

Thanks guys for your replies. I like the line technique. Bill Mc ;D

Re: What type caulk?
 

F1...HOMERUN!... ;) ;D...

Re: What type caulk?
 

smart i wacthed a show on tv once and thats what they did 200 mono or less you no 130 test should do also

Re: What type caulk?
 

Ditto the 4200 to seal it.

You could just use 14lb. fireline instead of mono. Under tension, that stuff cuts like a razor. ;D

Re: What type caulk?
 

See this is why this i such a good site the mono trick is great i am going to be lifting the cover over my fuel tank and Ya'll gave me some good info Thanks.

Re: What type caulk?
 

4200 it will be with 30# fire line! Thanks Bill Mc ;D

Re: What type caulk?
 

Fillet, Your the man!! >:(Why didnt I think of that.

Re: What type caulk?
 

Please be patient with me, a newbie - but why do you caulk this anyway? I opened my tank cover just to have a look around - getting the old caulk out was a pain. I've replaced the cover but haven't recaulked yet. It doesn't seem that that much water can get in, and if it does it just drains to the bilge. I can tell from the thread that I should probably re-caulk, but I wonder how necessary it really is???

Re: What type caulk?
 

Ya wanna keep as much water out as you can, fiberglass is not waterproof!!!! Gelcoat is, but bare fiberglass is not. so any hole in the gelcoat (i.e. screwholes for hardware, etc) should have some sealer, not only is it used as a sealant, but also a bedding compound for hardware. Excess water inside the hull can be absorbed over time and cause the wood core in things like stringers and decks to rot and fail.

Re: What type caulk?
 

Fillet, I owe you a beer (two beers maybe) for that Monoline trick. That's one handy trick.

Thanks!!!!