[Rhodes22-list] Soul of the sole

The Rhodes 22 Email List rhodes22-list at rhodes22.org
Thu Jan 15 13:03:39 EST 2015


Thanks Rummy! 
I appreciate your wisdom in the matter.  Hey that NP1 is similar in chemical composition to the 4200 but home depot has it for $23 for a 4 pack!  Not bad! 4200 is $12 each.
Thank you.  I will look for it and probably go with that!

Bob

> On Jan 15, 2015, at 11:59 AM, The Rhodes 22 Email List <rhodes22-list at rhodes22.org> wrote:
> 
> 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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