[Public-List] Aluminum mast treatment - Tremclad

[John Birch]

Hi Richard,

He sanded the mast until all the oxidization was gone, cleaned with TSP, 
used a chemical etching product (don't know which), and then used a Tremclad 
primer followed with 11 aerosol cans of Tremclad semi gloss white.

I would imagine Rustolium would be a reasonable substitute

You will on any painted alu get some loss of adhesion over time, but 
touching up with another can of Tremclad brings it all back nicely. His 
total cost at the time was $135 CDN. And Awlgripped mast starts at $700 CDN 
for a fully prepped mast fully stripped. Actual shop done Awlgrip jobs run 
$2-3K.

Gord suggested rolling and tipping using a linear polymer polyurethane paint 
like Brightside. The problem is, most people are not great roll & tippers, 
and Brightside is a very hard paint to sand down.

If you do like most sailors up here, you unstep your mast annually, so a 
touch up is no big deal - just don't get the over spray on someone else's 
mast in the yard.

Other trick is never never never ever wrap your mast in plastic over the 
winter, because, if painted you will get blistering and lots of it. If it is 
an unpainted mast you will degrade it by trapping moisture and galvanic 
action of SS against alu leading to pitting - that's straight from Danny 
Klacko of Klacko Spars. If you are covering it, use canvas or other 
breathable fabric.

Hope this is a help Richard

ATB

John



----- Original Message ----- 
From: "Richard Mair" <ramair49 at gmail.com>
To: "Alberg 30 Public List -- open to all" <public-list at lists.alberg30.org>
Sent: Monday, June 30, 2014 7:55 AM
Subject: Re: [Public-List] Aluminum mast treatment - Tremclad


> John.
> What special preparation was done on the mast. We need to do window frames
> and the mast and boom at end of season. Never had a lot of luck getting
> paint to stick to aluminum even with etching spray primer.
>
> Richard
> On Jun 27, 2014 9:42 AM, "John Birch" <Sunstone at cogeco.ca> wrote:
>
>> A while back at our Club, a well known and respected member who had done 
>> a
>> number of restorations of boats used aerosol Tremclad Semi Gloss white on
>> this mast & boom instead of awlgrip. The mast looked great, fast 
>> forwarding
>> 10 years later, it still looks great, with an occasional spray touchup of
>> the Tremclad.
>>
>> He used 11 cans at about $12 CDN each for his 40 foot mast - pretty cheap
>> compared to Awlgriping; and the bonus, easy to touchup scrapes, unlike
>> awlgrip.
>>
>> Just a thought.
>>
>> JB
>>
>> ----- Original Message ----- From: "Glenn Brooks" <
>> brooks.glenn at comcast.net>
>> To: "Alberg 30 Public List -- open to all" 
>> <public-list at lists.alberg30.org
>> >
>> Sent: Friday, June 27, 2014 9:30 AM
>> Subject: [Public-List] Aluminum mast treatment
>>
>>
>>  Not sure my earlier post actually got posted... So will try again.
>>>
>>> Iam curious if there are any new whiz bang aluminum treatment products 
>>> in
>>> the marketplace?  My mast has long ago lost its anodizing and every few
>>> years ends of with black streaks.  Also the gooseneck and boom suffer
>>> pitting and corrosion.  So I would like to treat the exposed aluminum 
>>> with
>>> something that will protect against this occurring.
>>>
>>> Anybody know of any new space age stuff that will do this?  Iam not
>>> really interested in painting the mast, and traditional acid washes are
>>> almost outlawed at my local yards anymore.
>>>
>>> Thanks
>>> Glenn
>>> Dolce 318
>>>
>>>
>>> Sent from my iPad
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>>
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