I know this is the preferred method of applying two pack paint to boats,
My question is:

What is the most suitable two pack paint "type" to brush over freshly
primed and under coated "synthetic"?.

Can two pack be re-applied more than once over previous layers again
by using brush application? and I wish to avoid any likelihood of a
solvent reaction.

Can anyone please suggest a two pack paint available in the UK that will
perform exactly as described above?.

Steve.

Steve:

What 'synthetic' material are you proposing to put a two-pack pain
over?

Since this is a boat-building forum, I take it that you've primed a
polyester resin, gel coat surface and are now wanting to paint it with
a two-part polyurethane paint. I also assume this is a 'topside'
(above the waterline) application?

All two-part paints (that I'm aware of) require a specific 'epoxy'
(i.e. two-part) primer or under-coater. You cannot apply two-part
topside paint over a primer not designed for two-part polyurethanes.
See : www.blakespaints.com for additional information from this UK
paint manufacturer.

Yes, you can re-apply as many coats of two-part polyurethane 'on top
of' each other as you want, (generaly) sanding between coats.

Mike Worrall
Los Angeles

In message
(mike worrall) wrote:

Steve:

What 'synthetic' material are you proposing to put a two-pack paint
over?

Linseed oil synthetic based.

Since this is a boat-building forum, I take it that you've primed a
polyester resin, gel coat surface and are now wanting to paint it with
a two-part polyurethane paint. I also assume this is a 'topside'
(above the waterline) application?

Sorry Mike, My question was misleading particularly with this being a
boat forum but I have been told that applying two pack paint with a
"brush" on boats is quite a popular method as opposed to spraying.

This question may not be answered in a car forum because people
generally don't paint cars with a brush using two pack paint.

I am actually painting a vehicle that was re-painted in oil paint twenty
years ago but it's top coat was done in two pack, After twenty years the
paintwork now needs completely re-doing but I want to paint the vehicle
in the same way by applying synthetic oil primers and undercoats to the
wood and metal areas first with the intention of finally painting the
whole vehicle in a suitable two pack finish.

The vehicle is over eighty years old and I intend painting it in the old
fashioned way using oil paints. This would not normally pose a problem
only for the final coat being a modern two pack as opposed to the older
original oil based synthetics.

All two-part paints (that I'm aware of) require a specific 'epoxy'
(i.e. two-part) primer or under-coater. You cannot apply two-part
topside paint over a primer not designed for two-part polyurethanes.
See : www.blakespaints.com for additional information from this UK
paint manufacturer.

I agree but I am unclear as to what types of two pack paints are
available suitable for my purpose, Years ago we simply had two pack
Synthetics, now we have Acrylics and Polyurethanes.

Yes, you can re-apply as many coats of two-part polyurethane 'on top
of' each other as you want, (generaly) sanding between coats.

However I must emphasise that absolutely no spraying will be involved.
I know you can "spray on" multiple layers of two pack but can you
"brush on" multiple layers?.

Cheers,

Steve.

hiya
the problem with 2 pack paints is they contain cyanide so unless you have
the right equipment I would think again, yes I know people use it with
little or no protection but that's up to the individual.

I recently painted my hull with yacht enamel using a small radiator roller
with a foam roller, instead of tipping off with a brush I used the same
roller very lightly over the previously painted area and the finish rivals
spraying.

Richard

flame away

wrote in message
...
I know this is the preferred method of applying two pack paint to boats,
My question is:

What is the most suitable two pack paint "type" to brush over freshly
primed and under coated "synthetic"?.

Can two pack be re-applied more than once over previous layers again
by using brush application? and I wish to avoid any likelihood of a
solvent reaction.

Can anyone please suggest a two pack paint available in the UK that will
perform exactly as described above?.

Steve.

In message
"fraggy" wrote:

hiya
the problem with 2 pack paints is they contain cyanide so unless you have
the right equipment I would think again, yes I know people use it with
little or no protection but that's up to the individual.

Breathing apparatus should be utilised when spraying two pack paints as
they do contain isocyanate.

I have the use of a large ventilated area when I get round to painting
the vehicle and I also intend wearing a mask.

I recently painted my hull with yacht enamel using a small radiator roller
with a foam roller, instead of tipping off with a brush I used the same
roller very lightly over the previously painted area and the finish rivals
spraying.

I won't be using a roller only a brush, Hoping this will also rival a
spray finish. I've decided not to use synthetic primers or undercoats
as I've just purchased two pack primer to use on the woodwork as this
should eliminate any possible synthetic paint solvent problems.

Steve.