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Alum hull interior painting
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Tony
May 27, 1999, 3:00:00 AM5/27/99
to
Does anyone know the regular practice for coating the inner surface of
an aluminum hull (Sailing cruiser) prior to insulation installation?
I've seen articles that suggest both ways: One is to paint the entire
interior(including the bilges) with similar sytem as exterior - alumi-
prep, zinc primer, etc. (more expensive, better protection, but subject
to localized corrosion if coating is broken). The other is to leave the
interior hull bare (less expensive, but seems to be risky).
an aluminum hull (Sailing cruiser) prior to insulation installation?
I've seen articles that suggest both ways: One is to paint the entire
interior(including the bilges) with similar sytem as exterior - alumi-
prep, zinc primer, etc. (more expensive, better protection, but subject
to localized corrosion if coating is broken). The other is to leave the
interior hull bare (less expensive, but seems to be risky).
Opinions, experience, anecdotes?
Thanks.
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John Matott
May 28, 1999, 3:00:00 AM5/28/99
to
Assuming your hull is constructed of the appropriate alloy, you do not need
to coat its interior...that's one of the many reasons people choose aluminum
as a material.
to coat its interior...that's one of the many reasons people choose aluminum
as a material.
--
John Matott
Fern Ridge Boatworks, Inc.
jo...@fernridgeboats.com
Robert Laine
May 29, 1999, 3:00:00 AM5/29/99
to
The only reason to paint the inside of an aluminium hull is: visual aspect.
This being said if you are not too sure about maintaining a clean bildge or
engine compartment, 2 coats of epoxy primer will go a long way to minimise
the risk of corrosion by bits of copper wire drop in the bildge.
This being said if you are not too sure about maintaining a clean bildge or
engine compartment, 2 coats of epoxy primer will go a long way to minimise
the risk of corrosion by bits of copper wire drop in the bildge.
Robert Lainé
http://users.bart.nl/~jmlaine/carene/ free hull CAD
http://users.bart.nl/~jmlaine/sailcut/ free sail CAD
Tony wrote in message <7ii8hl$p18$1...@nnrp1.deja.com>...
Graeme Cook
Jun 3, 1999, 3:00:00 AM6/3/99
to
Go to France or Australia - there are thousands of aluminum boats that are
not painted, except for anti-fouling. On topsides, cabin and interior
paint is purely a cosmetic.
not painted, except for anti-fouling. On topsides, cabin and interior
paint is purely a cosmetic.
Tony
Jun 3, 1999, 3:00:00 AM6/3/99
to
nm
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Phil Smith
Jun 20, 1999, 3:00:00 AM6/20/99
to
Tony wrote:
>
> Does anyone know the regular practice for coating the inner surface of
> an aluminum hull (Sailing cruiser) prior to insulation installation?
> I've seen articles that suggest both ways: One is to paint the entire
> interior(including the bilges) with similar sytem as exterior - alumi-
> prep, zinc primer, etc. (more expensive, better protection, but subject
> to localized corrosion if coating is broken). The other is to leave the
> interior hull bare (less expensive, but seems to be risky).
>
> Opinions, experience, anecdotes?
>
> Thanks.
>
> --== Sent via Deja.com http://www.deja.com/ ==-->
> Does anyone know the regular practice for coating the inner surface of
> an aluminum hull (Sailing cruiser) prior to insulation installation?
> I've seen articles that suggest both ways: One is to paint the entire
> interior(including the bilges) with similar sytem as exterior - alumi-
> prep, zinc primer, etc. (more expensive, better protection, but subject
> to localized corrosion if coating is broken). The other is to leave the
> interior hull bare (less expensive, but seems to be risky).
>
> Opinions, experience, anecdotes?
>
> Thanks.
>
> ---Share what you know. Learn what you don't.---
I read some postings by a guy who had a 60' aluminum sail boat built. He
had the interior painted because he said that was the only way he could
get the builder to clean it properly.
For what it is worth.
TF
Jun 21, 1999, 3:00:00 AM6/21/99
to
Get it sprayed with a quality truck bed liner.
The Thompsons
Jun 27, 1999, 3:00:00 AM6/27/99
to
I was under the impression that aluminum would not corrode. Was this a
wrong assumption. I have a plate aluminum fishing boat that has never been
in salt water, but I always thought it would be fine if it were. Currently,
interior and part of exterior are coated with a zolotone spackle gray paint.
wrong assumption. I have a plate aluminum fishing boat that has never been
in salt water, but I always thought it would be fine if it were. Currently,
interior and part of exterior are coated with a zolotone spackle gray paint.
Ty
Phil Smith <p...@well.com> wrote in message
news:376DB7A5...@well.com...
Tony
Jun 29, 1999, 3:00:00 AM6/29/99
to
Aluminum will corrode aggressively in salt water if there is a more
noble metal also in contact(with the alum & the water)like stainless
steel or brass. Additionally, stray currents from bad grounds in
marinas can initiate corrosion. Generally, aluminum is pretty good,
expecially by itself and more so in fresh water. I'm looking at salt
water use, relatively large boat, other metals around (props, prop
shaft, engine casings, etc.). All effort is made to keep these un-
connected electrically, zinc's are also used to keep a protective
voltage potential on the aluminum. Paint helps another step
further....(if needed - like in the interior). But in general, aluminum
is not all that noble on the corrosion scale, it sometimes needs to be
helped to get its best corrosion resistance.
noble metal also in contact(with the alum & the water)like stainless
steel or brass. Additionally, stray currents from bad grounds in
marinas can initiate corrosion. Generally, aluminum is pretty good,
expecially by itself and more so in fresh water. I'm looking at salt
water use, relatively large boat, other metals around (props, prop
shaft, engine casings, etc.). All effort is made to keep these un-
connected electrically, zinc's are also used to keep a protective
voltage potential on the aluminum. Paint helps another step
further....(if needed - like in the interior). But in general, aluminum
is not all that noble on the corrosion scale, it sometimes needs to be
helped to get its best corrosion resistance.
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