Freshly galvanised gate which I want to paint ASAP.
A friend recommended using this stuff.
http://www.zinsseruk.com/Shop/Produc...d=140&pgId=450 .

I've always been led to believe that you need to degrease first,
followed by an etching primer (Mordant solution), wash after it's all
gone black, allow to dry and then a metal primer before a final exterior
gloss.

Am I old fashioned and perhaps not up with the latest paint technology
which the friend recommended?

Experienced advice needed, I hate painting!!!!

Don

On 17 Sep, 12:11, Donwill wrote:
Freshly galvanised gate which I want to paint ASAP.
* A friend recommended using *this stuff. *http://www.zinsseruk.com/Shop/Produc...d=140&pgId=450.

I've always been led to believe that you need to degrease first,
followed by an etching primer (Mordant solution), wash after it's all
gone black, allow to dry and then a metal primer before a final exterior
gloss.

Am I old fashioned and perhaps not up with the latest paint technology
which the friend recommended?

Experienced advice needed, I hate painting!!!!

Don

You're right. However I think there are some paints now for metals
that are "self etching"
I tend to go for known solutions myself.

On 17 Sep, 12:11, Donwill wrote:
Freshly galvanised gate which I want to paint ASAP.

Best thing is to wait 6 months, then paint.

Next best thing is to paint it today. Unweathered plain zinc is still
a better painting surface than almost anything else (except weathered
zinc).

Wash it first to remove crud, but you don't need to do any more. You
certainly don't need to etch prime on zinc, in fact that's going to be
worse than a non-etch.

Donwill wrote in news:8fh0n5F9i9U1
@mid.individual.net:

Freshly galvanised gate which I want to paint ASAP.
A friend recommended using this stuff.
http://www.zinsseruk.com/Shop/Produc...d=140&pgId=450 .

I've always been led to believe that you need to degrease first,
followed by an etching primer (Mordant solution), wash after it's all
gone black, allow to dry and then a metal primer before a final exterior
gloss.

Am I old fashioned and perhaps not up with the latest paint technology
which the friend recommended?

Experienced advice needed, I hate painting!!!!

Don


You are right to be asking this question. I live near some expensive
galvanised steel fencing which was erected only a couple of years ago, yet
the paint is already flaking off.

Audi (the car manufacturers) on the other hand, clearly know how to do it,
because the painwork on their galvanised steel car bodies clearly doesn't
flake off, even when pummelled by the elements. Mind you, it's probably
baked on at high temperature. Someone once told me that with galvanised
steel, the very outermost layer is actually (technically) some kind of gas,
and that's why paint doesn't stick well to it. Perhaps some learned person
can elaborate/confute this!

Al

"Donwill" wrote in message
...
Freshly galvanised gate which I want to paint ASAP.
A friend recommended using this stuff.
http://www.zinsseruk.com/Shop/Produc...d=140&pgId=450 .

I've always been led to believe that you need to degrease first, followed
by an etching primer (Mordant solution), wash after it's all gone black,
allow to dry and then a metal primer before a final exterior gloss.

Am I old fashioned and perhaps not up with the latest paint technology
which the friend recommended?

Experienced advice needed, I hate painting!!!!

Don

I thought galvanising was so as you didn't have to paint! Why pay extra for
a process you are going to cover up?

S

On 17/09/2010 21:30, Spamlet wrote:

I thought galvanising was so as you didn't have to paint! Why pay extra for
a process you are going to cover up?

Looks nicer?

Cars with some form of galvanising definitely rust rather less than
those with just paint did, so the idea of doing both zinc and paint is sane.

"Clive George" wrote in message
o.uk...
On 17/09/2010 21:30, Spamlet wrote:

I thought galvanising was so as you didn't have to paint! Why pay extra
for
a process you are going to cover up?

Looks nicer?

Cars with some form of galvanising definitely rust rather less than those
with just paint did, so the idea of doing both zinc and paint is sane.

For that you have zinc paint or good old red lead, which work just fine.

S

On Fri, 17 Sep 2010 23:15:29 +0100, "Spamlet"
wrote:


"Clive George" wrote in message
news:39WdnUTee6rTSQ7RnZ2dnUVZ8iSdnZ2d@brightview. co.uk...
On 17/09/2010 21:30, Spamlet wrote:

I thought galvanising was so as you didn't have to paint! Why pay extra
for
a process you are going to cover up?

Looks nicer?

Cars with some form of galvanising definitely rust rather less than those
with just paint did, so the idea of doing both zinc and paint is sane.

For that you have zinc paint or good old red lead, which work just fine.

I think many people consider galvanising as a purely mechanical
protection (like paint), whereas its action is really electrolytic
(hence its name!).

Even where galvanisation is scratched the adjacent zinc does still
provide protection to the iron underneath.

The purpose of overpainting is really mainly cosmetic, and to protect
large areas of galvanisation.

Often in very exposed places (such as hill-top radio towers) micaceous
paint is used for physical protection. The original galvanising is
allowed to weather for several months before any painting is
considered.

--
Frank Erskine

"Donwill" wrote in message
...
Freshly galvanised gate which I want to paint ASAP.
A friend recommended using this stuff.
http://www.zinsseruk.com/Shop/Produc...d=140&pgId=450 .

I've always been led to believe that you need to degrease first, followed
by an etching primer (Mordant solution), wash after it's all gone black,
allow to dry and then a metal primer before a final exterior gloss.

Am I old fashioned and perhaps not up with the latest paint technology
which the friend recommended?

Experienced advice needed, I hate painting!!!!

Don


Paint will not take well to fresh galv ...
Either leave a year or give it a good wash with strong detergent followed by
clean water.

I think the acids & contaminants during galvanizing leave too much surface
crud.

Also if you fit gate and leave it a year, by then you will have lost all
interest in painting it.

If you are going to use Hammerite ... they produce a specific Galv primer,
which cleans & etches the surface.