[Rhodes22-list] New Joint of Deck and Hull from originator

Mon Feb 9 14:04:09 EST 2015

Graham,

Take a look at AYBA book H-27 2014.

On Casey, I was just referring to what you said about what he wrote.  That
is, he discussed sealants in his book but later in his article realized it
is really about adhesives.

Realize that making the joint rigid to prevent leaks transfers the stress
of flexing to areas of the deck and hull that are not designed to absorb
that much stress.  In other words, you wind up with a boat that keeps
cracking in the wrong places forevermore.

Rick

On Sun, Feb 8, 2015 at 9:05 PM, The Rhodes 22 Email List <
rhodes22-list at rhodes22.org> wrote:

> Rick:
> Actually I did check the AYBA standards after you mentioned them before but
> could not find any reference to the matter of the hull-deck joint. Do you
> know if they address this directly?
> I don't know what to make of the comment about Casey not knowing the
> difference between a sealant and an adhesive. In the book I have he has a
> whole section on the topic.
>
> Graham
>
> -----Original Message-----
> From: rhodes22-list-bounces at rhodes22.org
> [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of The Rhodes 22
> Email
> List
> Sent: February-08-15 4:28 PM
> To: The Rhodes 22 Email List
> Subject: Re: [Rhodes22-list] New Joint of Deck and Hull from originator
>
> Hi Graham,
>
> Don Casey is a good writer for recreational sailing publications.  However,
> I have never seen him write for the boat building industry, like Profession
> Boat Builder magazine.  Yet it is a good thing that since writing the book
> you read, he now seems to know the difference between a sealant and an
> adhesive.
>
> If you want the advice of many who spend all their days doing it, check the
> ISO or AYBA standards.
>
> Rick
>
> On Sat, Feb 7, 2015 at 7:48 PM, The Rhodes 22 Email List <
> rhodes22-list at rhodes22.org> wrote:
>
> > Hi Chuy:
> >
> > The postings opposed to the idea of fixing the hull-deck join with
> > fibreglass lay-up were making me increasingly doubt the approach I
> > suggested. However, your reference to Don Casey's article in Sail
> > magazine prompted me to check the subject of hull-deck repairs in
> > Casey's  book Sailboat Hull and Deck Repairs that I had read about 4
> > years ago and had forgotten about. I knew that I had not just dreamt
> > up the idea of joining the hull and deck with fibreglass layup but I
> > could not remember where the idea originated. Casey gives detailed
> > instructions for sealing with 5200 and re-fastening where access to
> > the joint is not feasible. That said, he states the following:
> >
> > "FIBERGLASSING
> > THE BEST SOLUTION FOR A LEAKING HULL-to-deck joint is to join the two
> > parts permanently with fibreglass lay-up. This can be done either
> > inside or outside, depending on access and the design of the joint."
> > (Emphasis is in the original text.)
> >
> > In discussing types of joints, Casey says: "The best joints are
> > fibreglasses together into a single strong and leak-free unit, but few
> > are built this way. Most are joined mechanically with rivets, screws,
> > or bolts and depend on sealant to keep water out."
> >
> > In my case, getting access to the joint involved removing the covering
> > pads (a few screws), cutting back the lip of the liner, and removing
> > the wooden strip below the joint -all tasks that are much easier than
> > removing and replacing the rub rail and all of the hull-deck
> > fasteners. I removed my rub rail because I also had major deck core
> > replacement to do but had that not been the case I would have stayed with
> the inside glassing alone.
> >
> > At least now I can sleep knowing that I had not lost my mind or ruined
> > the boat.
> >
> >
> > Graham
> >
> >
> >
> > -----Original Message-----
> > From: rhodes22-list-bounces at rhodes22.org
> > [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of The Rhodes 22
> > Email List
> > Sent: February-06-15 1:14 AM
> > To: The Rhodes 22 Email List
> > Subject: [Rhodes22-list] New Joint of Deck and Hull from originator
> >
> > Hi ALL ,
> >    I received my special anniversary issue of Sail Magazine early in
> > the week but did not have time to read it., Volume 46 Number 2 February
> 2015.
> > Tonight I open it to the table of contents and guess what one of the
> > articles was about?   Page 60, "Sealed up Tight When is comes to securing
> > the hull to deck, which method is best?" by Don Casey.
> >
> > The author states "Boat builders are increasingly relying on
> > high-strength methacrylate adhesives to fuse the hull to the deck into
> > a single, leak proof component, in some cases omitting mechanical
> fasteners all together".
> > Further he states that this process is expansive so some builders use
> > flexible adhesives to bond the deck and hull, like 5200.  He goes on
> > and states that repairs on the joint are not treated as two halves,
> > since there is no reason to.  In most cases the deck to hull repair is
> > done without a joint in the damaged area.
> >
> > The article is very well written and easy to follow.  He explains the
> > different hull to deck joints used.  Their strengths and weaknesses
> > and the reason to for their use.
> >
> > After reading the article, I think that I most of my ideas with a few
> > minor adjustments.
> >
> > Thanks for all your input.
> >
> > Chuy
> > AfterMath  1987
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