hull to deck joint

[JF AIR]

Good day Gentleman
While trying to clean the hull, there were brownish streaks leaking down all the way up from the rubrail and running down along the hull.It is
ugly and the streak remover is useless...That led me into taking off the rubrail and cleaning the area.I cleaned away some very damaged tape that seemed to have been glued over the joint aft to fwd...Segments were also doubled taped wit duct tape over existing tape ( around the segment where the chainplates pass trough the joint).The chainplates intersection also had soft greyish caulking to fill the gaps where they ran trough the joint...
Now the questions:
Anybody knows about that tape,is it essential, and should it be replaced...
Anybody knows about that chainplate caulking at the intersection , is it essential
The boat is a C23 1989 and the joint is tru bolted ...
Best regards
Go habs go
JFR frm Montreal

[marc]

I have a CP 19. I recently removed my rub rail to examine my hull/deck joint. My understanding is that the duct tape or similar product was placed over the joint at the factory to allow them to more quickly assemble the boat. By using the tape, they did not need to wait for the 3M 5200 to dry before installing the rub rail. There is no need to replace the tape. You ought to remove any soft caulk. I used a dremel cut-off wheel to grind out any soft caulk or area where I had any small voids in the joint. When I was done with that step, my joint looked like this in those areas I cleaned up.


I then used 5200 to refill these locations. I pressed in the caulk with a caulk gun and followed up with using a putty blade in a few spots. I then put a coat of 5200 along the entire length of the joint and smoothed it off with a gloved finger. The danger of not taking care of this is that you may get leaks into the boat.

[brackish]

It is also my understanding that the tape is just there to hold the caulk in place and prevent excessive squeeze out during the assembly process prior to full cure.  The extra tape and different caulk at the chainplate intersection may be an after the fact repair to stop a leak at that point.  The chain plates "work" constantly under sail and if a leak at the hull to deck seam is to occur, that is normally where it will be. Hutchins is the best source for answers to you questions, they can and will tell you what was done for your specific hull number boat.