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Old    Jon Hunter (hunter660)      Join Date: Aug 2007       02-25-2010, 7:04 AM Reply   
I had part of my boat painted last summer. Every since then my bilge seemed to run much more often than I remembered before. I finaly traced it to coming in the screw holes for the rub rail. What is the best way to seal this back up?
Old    Art (rallyart)      Join Date: Nov 2006       02-25-2010, 7:16 AM Reply   
Silicone caulking/sealant.
Old    Jon Hunter (hunter660)      Join Date: Aug 2007       02-25-2010, 7:40 AM Reply   
I figured that, anything specific I should look for?
Old    C.I.E..... Evan (guido)      Join Date: Jul 2002       02-25-2010, 11:04 AM Reply   
Get some marine grade silicone. You can get it at a boat shop, or order it online.
Old    Peter_C (peter_c)      Join Date: Sep 2001       02-25-2010, 11:09 AM Reply   
I would recommend 3M 5200 fast cure.
Old    dhcomp (dhcomp)      Join Date: Jun 2003       02-25-2010, 11:24 AM Reply   
how often is your rubrail in the water?
Old    Nacho (denverd1)      Join Date: May 2004       02-25-2010, 11:32 AM Reply   
^ that's what I was thinking. Surfing is all I came up with.

I'd also check your exhaust tubes and the thru-hull flanges they connect to. Being a 10yr old boat, the tubes could be leaking into the bilge.
Old    Mitch (wakemitch)      Join Date: Jun 2005       02-25-2010, 11:35 AM Reply   
Jon, a wakesurf customer of ours has a maristar like you that surfs a lot and he was having water come in through the rubrail as well. he ended up finding out that his hull was seperating.
i would get that checked out.
Old    JUST-IN-TIME (justintime)      Join Date: Mar 2009       02-25-2010, 12:47 PM Reply   
DO NOT USE 5200

that is meant for below water-line, and is a pain to remove

use 4200 or any marine grade caulk

yes, sounds like the hull is separating from the top deck
Old    Jon Hunter (hunter660)      Join Date: Aug 2007       02-25-2010, 12:57 PM Reply   
I was going to ask about the 5200 being "permanent" I thought I learned that when reading about plumbing ballast.

My rub rail is not underwater, and yes, the problem is MUCH worse at wakesurf speeds. The water hits the hull and shoots straight up the side and under the rub rail causing the leak.

The hull separating had crossed my mind, but I'm trying to be optimistic. The boat is fairly new to me, but I did not notice the problem until last season after it was painted.

I'm headed out to the shop now to pull the rub rail off and take a closer look. Will it be easy to spot if the hull is indeed separating? How would I repair this?

Thanks
Old    Nacho (denverd1)      Join Date: May 2004       02-25-2010, 1:00 PM Reply   
Sounds like its time to pull the rub rail.
Old    Jon Hunter (hunter660)      Join Date: Aug 2007       02-25-2010, 1:48 PM Reply   
There are no visable signs of any cracks or gaps between the upper and lower halfs of my hull. The paint that was sprayed on before last season is not cracked at the seam either. I'm going to check it out better later when I have more light, but I think my hull is fine. Water must be coming in the hundreds of screw holes holding the rail on. Guess I need to order a few tubes of 4200.
Old    Sam (wake1823)      Join Date: Dec 2005       02-25-2010, 2:34 PM Reply   
IMO 4200 is overkill. It's very expensive too.
Old    JUST-IN-TIME (justintime)      Join Date: Mar 2009       02-25-2010, 5:04 PM Reply   
yes 4200 is over kill, 5200 would be a bare to strip off

but then again its the rub rail, and you want a good sealer on it
Old    BMG (wackbag)      Join Date: Feb 2009       02-26-2010, 7:07 AM Reply   
You can run clear marine grade silicone under the rub rail out of site. If you do a clean job you wont even notice. Chances are the water is coming from the bottom of the rub rail and not through the screws or rivets.
Old    Ken Toby (towboat_222)      Join Date: Feb 2007       02-26-2010, 7:18 AM Reply   
Hey Jon, this Ken if they repainted boat they probably just put the screws back in with out caulking. If you want to stop it pull screws caulk and like BMG said caulk under rub rail and you should be good to go.
Old    Jon Hunter (hunter660)      Join Date: Aug 2007       02-26-2010, 7:24 AM Reply   
There is no caulking under the rub rail. The seam between the upper and lower half looks fine. I will problobly run a bead of silicone there anyway though.
Old    Kevin Geary (WakeboardNJ)      Join Date: Mar 2010       03-02-2010, 10:33 AM Reply   
I have a similar issue with water leaking at the rub rail, but only at wakesurf speeds. Two thought's came to me on the problem/solution.
1. The rubrail is leaking, and will need to be re-caulked (gonna do this in the spring)
2. water is coming in the drain for my bilge pump. (this drain is underwater when we are wakesurfing. I do have a inline valve for this drain, but I am afraid that the pressure of the water is causing it to fail. I intend to move this drain to another location in the hull in the spring)

I'm hoping that these fixes 2 fixes will resolve the issue. Everything else has been checked and confirmed good.
Old    Jon Hunter (hunter660)      Join Date: Aug 2007       03-02-2010, 3:39 PM Reply   
I stopped by Gander Mountain today. The only thing they had was clear 3M silicone in a 3oz tube for $10. Surly this stuff isn't that high.
Old    Art (rallyart)      Join Date: Nov 2006       03-02-2010, 5:21 PM Reply   
Silicone is basically silicone. The differences are slight. You should be able to get a tube big enough to do the whole boat for about $6 and use a caulking gun. You can use the bathroom silicone and be fine.

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