Hull to Deck joint loose

adoseth

Petty Officer 2nd Class
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Jan 15, 2012
Messages
109
Hello friends, I have a small problem with my 1966 MFG Seacruiser, a section of the hull to deck joint about 6 feet long on the starboard side just ahead of the transom is loose/has movement, the caulking or bondo looking type stuff they used to fill the gap is also cracking apart, any suggestions on repairing the loose section and what to use to fill the gap?
 

sphelps

Supreme Mariner
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Nov 16, 2011
Messages
11,475
Re: Hull to Deck joint loose

Hey Adoseth, we need some pics ! Does your mfg have a wood deck or the all fiberglass deck and stringers. Just a guess , grind out the bad joint and make some PB fill it then lay glass.
 

adoseth

Petty Officer 2nd Class
Joined
Jan 15, 2012
Messages
109
Re: Hull to Deck joint loose

Hey Sp, it's the top deck(the blue part) coming loose from where it attaches to the hull, but it has fiberglass stringers and a wood floor i believe
 

Jeep Man

Commander
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Oct 17, 2008
Messages
2,803
Re: Hull to Deck joint loose

Hey Sp, it's the top deck(the blue part) coming loose from where it attaches to the hull, but it has fiberglass stringers and a wood floor i believe

Pics, pics, pics please
 

sphelps

Supreme Mariner
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Nov 16, 2011
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Re: Hull to Deck joint loose

Ohhh , the cap is glued in with some stuff that no one has figured out what it is made of . I,m going to glass mine back in from the inside and then use the same PB to fill in the outside.


ps . If you take an angle grinder with a thin metal cutting blade and score into that stuff about a 1/2 "
from the hull you can take a chizzle and break the stuff off to make a grove for new PB. It,s pretty brittle stuff.
 

adoseth

Petty Officer 2nd Class
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Jan 15, 2012
Messages
109
Re: Hull to Deck joint loose

Sounds good Sp, from what i have learned there are also screws that run along behind the rub rail that help lock the cap to the hull, this is what is loose on mine not all of it tho, just a small 6foot section
 

adoseth

Petty Officer 2nd Class
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Jan 15, 2012
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109
Re: Hull to Deck joint loose

for some reason i cant even post a 23kb picture , what wrong with the website?
 

Woodonglass

Supreme Mariner
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Dec 29, 2009
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25,929
Re: Hull to Deck joint loose

Pic posting on iBoats is messed up. You'll need to set up a Free Photobucket account and use the IMG tag to copy and paste your pics into your iBoats thread.
 

sphelps

Supreme Mariner
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Nov 16, 2011
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11,475
Re: Hull to Deck joint loose

Is this the stuff? I don,t think there are screws holding the cap on . It,s just the white PB looking stuff.
IMG00343-20111126-1124.jpg
 

adoseth

Petty Officer 2nd Class
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Jan 15, 2012
Messages
109
Re: Hull to Deck joint loose

Thats it Sp, no screws? omg, by the way what is PB?
 

GT1000000

Rear Admiral
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Jul 13, 2011
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Re: Hull to Deck joint loose

Hi adoseth,
Just seen your thread and would like to come aboard and watch and help if I can...

For the posting of pics, it si best to get a free Photobucket account, load your pictures there, then copy the IMG tag and post them here...

PB is Peanut Butter, a name given to fiberglass resin thickened with one or more of the following, Cabosil, Fumed Silica, Microballons, Q-Cells, or finely chopped strands of fiberglas mat...

I personally like the crunchy JIF or Peter Pan PB myself...:D
 

GT1000000

Rear Admiral
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Re: Hull to Deck joint loose

As far as your repair, it sounds like you need to rind away or cut out any bad or cracked stuff...also grind at least 4-6 inches on either side of the damage, into the deck and the gunwhale...fill the joint with PB, create a fillet, then tab it in...

Tabbing in is the process of layering in CSM[1.5 oz. chopped strand mat] approximately 4 inches wide[2 inches on the deck, 2 inches on the gunwhale], then repeat with 1708 Biaxial cloth[ a woven fiberglass cloth with a layer of CSM attached], then repeat with a layer of CSM that is 6 inches wide[3 inches on the deck, 3 inches on the gunwhale] And a final layer of 1708, same as the CSM, 6 inches wide...

For added strength, you could carry this out one more time with 8 inch wide strips and finish it off with a layer of CSM to hide the 1708 cloth pattern, and finally paint or re-gel-coat the repair...

Hope this helps...cause I am only going off of what I have learned here and I really don't know if I am even close to imagining your actual repair...without pics, of course...:redface:
 

adoseth

Petty Officer 2nd Class
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Jan 15, 2012
Messages
109
Re: Hull to Deck joint loose

GT; basically my damage looks the same as Sphelps photo here on this thread, on the area that is loose it looks the same as the area that is tight, looking at it from the underside like sp's photo, another question, i would like to take the boat out and test the engine before i get started on the hull repair, could i do that without cracking the boat apart?
 

GT1000000

Rear Admiral
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Re: Hull to Deck joint loose

GT; basically my damage looks the same as Sphelps photo here on this thread, on the area that is loose it looks the same as the area that is tight, looking at it from the underside like sp's photo, another question, i would like to take the boat out and test the engine before i get started on the hull repair, could i do that without cracking the boat apart?

Oh OK, now I understand the repair you need to make, I thought it was inside where the deck meets the gunwhale...

Well to be totally honest with you, I am not 100% sure of what exactly would be your best course of action...in my limited experience, I do not think that is a vital structure of he boat unless it i9s so badly compromised all the way around as to POSSIBLY cause the cap to sepaprate from the hull, but I really don't think so...

Others with way more experience will jump in here and point you in the right direction...

On a personal opinion, if that is the only thing seriously wrong with the boat, I see no reason why you should not be able to take it out for a sea trial...

If possible, I would recommend a few things before going out...

1-Make sure the maintenance has been performed on the engine, like lower unit oil change, new water pump impeller, everything lubed properly, all the electrical is tight and in good condition, have 2 batteries in good fully charged condition, fresh fuel, properly mixed if it is a 2-cycle, spark plugs good, check the compression, make sure all of the controls[ie, shifter,steering] are working correctly, make sure the bilge pump works, make sure you put in the bilge plug, and try and make sure the hull doesn't have any big leaks...:facepalm: etc., etc.

2-Put muffs on the engine and start it and make sure it runs OK out of the water...don't rev it over a 1000 rpms, because you could cause damage to it, just make sure it will start and idle properly...most boat engines behave differently in the water than out, so there is no real sense in trying to put it through its paces while out of the water...

3- Make sure you have all of the proper safety gear on hand, like life jackets, emergency tools, first aid kit, oar, etc., etc...

4- If possible, have someone else come out with you in a separate spotter boat, just in case you get in trouble, he can tow you back or provide assistance...

5-make sure your trailer is 100% roadworthy.

6- make sure your tow vehicle is also roadworthy and all of the safety chains, trailer hitch and light connections are working properly...

7- If you have never owned a boat before, you should take a boating safety course...

8-If possible, practice backing your boat a few times in your driveway, to get a feel for how to do it when you get to the ramp.

9-then if all is good, go and have a little fun...

Enjoy, Be Safe, and Good Luck
 

adoseth

Petty Officer 2nd Class
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Jan 15, 2012
Messages
109
Re: Hull to Deck joint loose

sounds good GT, yea , i have pretty much met all the requirements there, taking her out to the caloosahatchee river this weekend :)
 

GT1000000

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Re: Hull to Deck joint loose

sounds good GT, yea , i have pretty much met all the requirements there, taking her out to the caloosahatchee river this weekend :)


Sounds excellent, wish I could go with ya...hey make sure you drop a line in while you are out there...maybe a nice fish would like to take a ride in your boat and go home with ya...:D
 

sphelps

Supreme Mariner
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Nov 16, 2011
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11,475
Re: Hull to Deck joint loose

Hey , Adoseth, has the hull came completely loose from the cap? If so you may want to lay some glass at the connection point inside the gunwhales . You may have to remove some foam to get to it. With it glassed in the outside should not matter much unless you want to dress it up alittle.
 

adoseth

Petty Officer 2nd Class
Joined
Jan 15, 2012
Messages
109
Re: Hull to Deck joint loose

Hey , Adoseth, has the hull came completely loose from the cap? If so you may want to lay some glass at the connection point inside the gunwhales . You may have to remove some foam to get to it. With it glassed in the outside should not matter much unless you want to dress it up alittle.
It feels like it has for about a 5 to 6 foot section but it is hard to really tell unless i start digging out that foam which i probably will do tonight just to inspect, none the less i will repair as you said with fiberglass, ill check to see if there are screws holding it together but i dont think the rub rail mounting screws go all the way thru , i will find out later tonight tho
 

sphelps

Supreme Mariner
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Nov 16, 2011
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11,475
Re: Hull to Deck joint loose

Adoseth, did you get your cap reattached or are you out bringing in some of them big reds ?:)
 
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