[Rhodes22-list] Soul of the sole
The Rhodes 22 Email List
rhodes22-list at rhodes22.org
Thu Jan 15 11:59:02 EST 2015
Bob,
I've answered this question several times recently and my choice remains
the same. I use a product called NP1. It is a single part polyurethane that
is extremely sticky, remains flexible and doesn't harden over it's expected
life expectancy of 15 years when exposed to direct sunlight and weather.
Silicon is not a good choice as it does not adhere to surfaces. It is
designed to be used as a sealant,such as in installing gaskets which are under
pressure. It could be argued that the deck joint functions like this, but in
reality it doesn't.
Rummy
In a message dated 1/15/2015 10:43:45 A.M. Eastern Standard Time,
rhodes22-list at rhodes22.org writes:
3m 5200 It is what most manufacturers are using for hull to deck sealants.
It is true it is an adhesive. But, it is a waterproof strongly adherent,
flexible one. If removed you do have to grind it off with a power drill
and wire brush. It may also make the boat less desirable to recycle.
The 5200 adhesive and 4200 sealants are moisture cure polyurethanes.
Water causes it to cure and set up. I do not believe Silicone is the treatment
of choice, though it would work for a while. It looses its adherence over
time with the flexing of the hull and will wick moisture in by capillary
action within a few years. Silicone also shouldnt be used below the
waterline ever! and someone used it to seal my through hull joints. I have to
take them out and seal them properly too.
Who out there has used silicone and what is your experience? Silicone is
cheaper and great for house windows but i dont think it has a place on board
a boat. It isnt totally waterproof and breaks down very fast in a salty,
warm environment. If you are bedding hardware you might want to remove in
the future, perhaps 3M 4200 might be the way to go.
Lets ask Rummy!
Bob
> On Jan 15, 2015, at 10:07 AM, The Rhodes 22 Email List
<rhodes22-list at rhodes22.org> wrote:
>
> I would not use 5200 if I were you. It is a permanent adhesive and not
> designed for this type of application. Use a sealant instead and you'll
be
> better off.
>
> Hank
> On Thu, Jan 15, 2015 at 9:55 AM, The Rhodes 22 Email List <
> rhodes22-list at rhodes22.org> wrote:
>
>> Graham: Yes that is what i meant. These boats have a notoriously leaky
>> hull to deck joint. Stan explained it was due to the workers
ineptitude he
>> had applying the joint caulk during those years. They probably caulked
the
>> seam after the hull and deck were fastened instead of caulking both
sides
>> then putting the sandwich together and just wiping away the excess.
>> I am going to remove the rail, clean out as much old caulk as i can and
>> then seal it with 3m 5200 and re-attach the rub rail. It shouldnt leak
any
>> more. I did this once before on an 80's era boat and it worked great.
>> Shortcuts were happening in every industry back then.
>>
>>>> On Jan 15, 2015, at 9:43 AM, The Rhodes 22 Email List <
>>> rhodes22-list at rhodes22.org> wrote:
>>>
>>> I doubt that it is the rub rail that is leaking. If it is leaking
through
>>> the screw holes you might get away with just removing the screws one
at a
>>> time and reinserting with sealant. It is more likely that the leak is
>> behind
>>> the rub rail where the deck and hull join.
>>>
>>> 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: January-15-15 6:56 AM
>>> To: The Rhodes 22 Email List
>>> Subject: Re: [Rhodes22-list] Soul of the sole
>>>
>>> Thanks Rummy.
>>> Yes i already have the bleach and scrub brush out there. I am going to
>> do
>>> the rub rail first though. Very leaky boat!
>>> Bob
>>>
>>>>> On Jan 15, 2015, at 5:06 AM, The Rhodes 22 Email List
>>>> <rhodes22-list at rhodes22.org> wrote:
>>>>
>>>> I'm sure you are aware of this,but the photo shows a great deal of
mold.
>>>> You might want to clean the area really good with a soapy bleach
>>>> solution prior to installing the new stringers.
>>>>
>>>> Rummy
>>>>
>>>>
>>>> In a message dated 1/14/2015 9:29:05 P.M. Eastern Standard Time,
>>>> rhodes22-list at rhodes22.org writes:
>>>>
>>>> http://www.rhodes22.org/pipermail/rhodes22-list/attachments/20150114/6
>>>> 474727
>>>> 0/attachment.JPG
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