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post #2 of Old 05-04-2017
roverhi
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Re: Tightening hull to deck joint

You don't name the manufacture but typical hull to deck joint on a production boat was through bolts on a fairly wide spacing like a foot or so and sheet metal screws in between at 4" or so spacing. They could have used pop rivets in place of the sheet metal screws. A fairly easy repair is pull the cap rail, remove and rebed the fasteners which are probably the cause of most of your leaks. Might replace the pop rivets or sheet metal screws with machine screws and nuts for a more secure fix. If your leaks are extensive and not limited to the fasteners you could take off the cap rail, remove all the fasteners, pry the deck apart, recaulk and refasten. Because I had other issues with the hull to deck joint, I glassed the hull and deck together on the outside. That was expensive as it was way above my skill level to get an acceptable cosmetic appearance when done. Do have my first ever fiberglass boat with no hull to deck leaks.
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