Deck to Hull joint

MattA24

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9 Jan 2014
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Hello,

First, a very grateful thank-you to everyone who posted their experiences and opinions to my recent thread about painting my hull. I didn't want to resurrect that dead thread for the purposes of saying that, so I say it here instead.

Now to business.

I have spent the last few days repairing the hull for painting. The old wooden rubbing strake was pretty nasty-looking, with various repairs and plenty of mismatched fastenings along it's length, so I pulled it off. I plan to fill the various screw, bolt and rivet holes, then fashion a new one and attach it afresh. With the strake off, I could see the outside of the deck-hull join.

The deck sits directly atop the hull sides. It is riveted down, then glassed in place very firmly inside. A previous owner has then covered the edges of the deck and (most of) the rivets with a thick layer of non-slip stuff, presumably to hide a ding or two.

The joint is very strong and I'm not at all worried about it, but there are some small gaps between deck and hull on the outside that I could poke a couple of razor blades into or a really little screwdriver. I will be shoving these full of epoxy when I fill the holes left by the old strake.

My question, which I apologies for taking so long to get around to, is this: I have a strange urge to also epoxy some glass tape over the join between hull and deck on the outside. In my head this would permanently seal and slightly strengthen this join from the outside. The tape would then be hidden by the new strake. Is this completely pointless? Should I just poke the cracks full of epoxy and then commence painting?

Again, many thanks,
Matt
 
There is an overlap between the deck and hull GRP as you mentioned that it is rivetted. This overlap should be more than adequate to hold the parts together and to stop water getting between the 2. Certainly fill any obvious gaps but I don't think you need add a glass tape. good luck olewill
 
My question, which I apologies for taking so long to get around to, is this: I have a strange urge to also epoxy some glass tape over the join between hull and deck on the outside. In my head this would permanently seal and slightly strengthen this join from the outside. The tape would then be hidden by the new strake. Is this completely pointless? Should I just poke the cracks full of epoxy and then commence painting?

As long as you're sure the crack is dry, I'd definitely tape it over. It's a pretty quick job: whizz over with a grinder, paint on epoxy, roll on narrow tape, paint on more epoxy, roll on wide tape, work in with a brush, job done. Poking epoxy filler in is a bodge by comparison, and will take almost as long.
 
Thanks everyone for your thoughts. So many replies in no time at all - this forum is amazing.

The consensus seems to be that I may as well tape it over, whether or not that's of any measurable benefit beyond the psychological. Then I can stick on a new strake and never think about it again.

Thanks coopec for the scary link! Happily my joint is nothing like the one in that article.
 
I'm having to do mine because the rubbing strake is rotten in places & I'm starting to wonder if I can be bothered to replace it.The rubbing strake is mainly for appearances now that we don't rub up against old pilings & have fenders to protect the boat.One less job to do & a bit less cosmetic bull**** :D

I might bung in a few more stainless steel bolts but can't see that fiberglassing over the gap is necessary.I guess it all depends on your own boats build quality & design.
 
Hello hello,

Can anyone offer any advice on how long after doing this job (and faring out hull dings at the same time) the epoxy would remain sensitive to rain?

I'll be using West System with Fast Hardener. Forecast temperatures are around 10 or 11 in the day, and about 7 at night.

I'd like to pop over to the boat tomorrow and get cracking, but will the epoxy have cured sufficiently by Thursday's forecast rain?

Thanks again for all your help
 
I'd like to pop over to the boat tomorrow and get cracking, but will the epoxy have cured sufficiently by Thursday's forecast rain?

Provided.... your epoxy:hardener mix is just right, you cover the work with taped-down bubble wrap, and use a hair dryer/fan heater for at least half-an-hour - you should have no problem with the bonding stuff not going off.
 
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