I know that primer(over steel) is designed to provide a base for a top
coat, and (allegedly) you should not leave steel with only a zinc
chromate coating (although I've seen steel fuselages zinc chromated
only and they appear in good condition).

I have read that if you appy a 2-part epoxy primer, you don't need a
top coat. Anyone else read that? - Mike

On May 20, 8:44 am, Michael Horowitz > wrote:
> I know that primer(over steel) is designed to provide a base for a top
> coat, and (allegedly) you should not leave steel with only a zinc
> chromate coating (although I've seen steel fuselages zinc chromated
> only and they appear in good condition).
>
> I have read that if you appy a 2-part epoxy primer, you don't need a
> top coat. Anyone else read that? - Mike

If you like the color of the primer then a top coat will only add
extra weight. IMHO

Ben

In article om>,
stol > wrote:

> On May 20, 8:44 am, Michael Horowitz > wrote:
> > I know that primer(over steel) is designed to provide a base for a top
> > coat, and (allegedly) you should not leave steel with only a zinc
> > chromate coating (although I've seen steel fuselages zinc chromated
> > only and they appear in good condition).
> >
> > I have read that if you appy a 2-part epoxy primer, you don't need a
> > top coat. Anyone else read that? - Mike
>
> If you like the color of the primer then a top coat will only add
> extra weight. IMHO
>
> Ben

The paint companies around here (PPG, for instance) say that primers
will not protect the steel long-term -- you need to apply a top coat to
seal it.

Check with a good auto/marine paint company -- they have a wealth of
information at their disposal.

I've heard that most primers are porous (maybe not epoxy as much, though)
and will not completely seal as a paint would.

"Orval Fairbairn" > wrote in message
...
> In article om>,
> stol > wrote:
>
>> On May 20, 8:44 am, Michael Horowitz > wrote:
>> > I know that primer(over steel) is designed to provide a base for a top
>> > coat, and (allegedly) you should not leave steel with only a zinc
>> > chromate coating (although I've seen steel fuselages zinc chromated
>> > only and they appear in good condition).
>> >
>> > I have read that if you appy a 2-part epoxy primer, you don't need a
>> > top coat. Anyone else read that? - Mike
>>
>> If you like the color of the primer then a top coat will only add
>> extra weight. IMHO
>>
>> Ben
>
> The paint companies around here (PPG, for instance) say that primers
> will not protect the steel long-term -- you need to apply a top coat to
> seal it.
>
> Check with a good auto/marine paint company -- they have a wealth of
> information at their disposal.