what's the difference between two PAC automotive paint and boat paint?

[30boat]

I didn't ignore you!!

I had considered automotive paint but you talked me out of it. Now I am wondering if William-H suggestion of the use of 2 pot polyurethane industrial paint is the way to go.

Ok,sorry.Make sure the paint is not an acrylic polyurethane hybrid.I use that kind of paint(Acrithane) because it's available here but it has nothing like the the wear and gloss resistance of International Perfection.
It's great for the interior though.

 

[coopec]

That is a load of Bollox and is very dangerous ignorant advice. Anyone reading his thread should pay much attention to the information given by Lakesailor.

I couldn't agree more and I'm sure no one else (with two exceptions) posting on this thread
would be that silly!

 

[oldsaltoz]

After many years of being around 2 pack polyurethane paints ant taking notice of the advice given, I can confirm that anyone who ignores the warnings is a fool.

One thing I have discovered is that the 2 pack polyurethanes with the 'long chain' polymers need more expertise to apply, but last longer and look better.

I would never apply automotive paints on board. not even inside, lacquers can be good in this situation though.

Good luck and fair winds.

 

[30boat]

After many years of being around 2 pack polyurethane paints ant taking notice of the advice given, I can confirm that anyone who ignores the warnings is a fool.

One thing I have discovered is that the 2 pack polyurethanes with the 'long chain' polymers need more expertise to apply, but last longer and look better.

I would never apply automotive paints on board. not even inside, lacquers can be good in this situation though.

Good luck and fair winds.

Applying two pack paints inside a boat without forced air respirators is indeed foolish.My boat is all white inside and it's all two pack paint but I should say that I brush painted thin plywood panels in the open air at home and then glued them to the bulkheads and other surfaces.Oh and the glue was a Tech7 like stuff.I never use contact glue.

 

[William_H]

Coopec I used Wattyl Colourthane 2 pack in white in my case from a general paint shop. I used it just with a brush on the hull and deck of the little GRP boat. I am reasonably satisfied with the result. certainly not the gloss finish one might get with spray but OK. It is easy to touch up the bangs and scratches. Indeed it is less worry with the boat to know I can easi9ly fix scratches. The paint itself has lasted in the tin for many years before being used to touch up althoiugh the hardener doesn't keep very long. (maybe 2 years)
You might wan to try to paint some unimportant part before deciding if brushing is OK. good luck olewill

 

[Jim@sea]

I was using 2 Pack Auto Paint (isocyanate) in my bodyshop from when it was introduced in the 1970's. Mainly ICI 2K
Every day we would do a full respray with 2 pack. And if it was a Transit I would use a brush but single pack.
At that time 2 pack had not arrived for boats. Or at least not marketed.
I had bought a 9 year old Ketch which had osmosis along the waterline which had been painted with single pack paint 3 years before and it was showing through again. (and the single pack paint had gone "flat")
I sanded the waterline down and hand painted a 9" stripe with 2 pack "Ford Ambassador Blue" 3 years later the osmosis had not come back.
Since then I have painted 2 boat hulls with 2 Pack and where a hull is white I use Ford Diamond White.
And when I am varnishing I use the Auto 2 pack "Clear over Base"
You do have to be careful when using 2 pack, one of my paint sprayers got Asthma but that was from years of previous Cellulose use.
My present boat has had a Gellshield coat and I have removed the antifouling and considering giving it a couple of coats of 2 pack British Racing Green to make it go faster. (well it is the first of April)

 

[born2sail61]

guy i used to do a bit of work for did a lot of car paintwork using 2pack.he used only a filter type mask(not airfed).he sadly died a couple of years back.he was riddled with cancer.he never smoked.i'm not saying 2pack caused it,but why risk it?

 

[coopec]

It's only a problem if the paint is sprayed. If it is applied by roller or brush normal work practices are fine.

I did a little research on rolling polyurethanes and, yes, there is no problem provided basic precautions are taken. Here is what Dulux says about rolling


Isocyanates

Risks Associated with Brush and Roller Application

Neither poly-isocyanate curing agent nor diisocyanate monomer evaporates
to any great extent from the polyurethane paint and therefore does not present an
inhalation hazard under normal brush an d roller application conditions. For more
information on........................

http://www.duluxprotectivecoatings.com.au/technotespdf/2.1 Isocyanates.pdf

Although I have the equipment to spray paint I have decided to "roll and tip" my yacht. I suppose most yachts would be done that way since there would be no way a Marina Manager (let alone other boat owners) would allow a boat to be spray painted on the hard in a marina.

There are video clips on Youtube which show how it is done and it appears to be a fairly simple technique. I was most interested to read what this guy who is obviously in the trade had to say.

clockwork orange
Registered User

We paint boats, generally we use Awlcraft 2000 on spray jobs as most customers have no imagination as far as colors go. On my personal boats i use Automobile paints for a number of reasons such as an almost unlimited pallete of colors available, nice paints that are designed to be repairable, readily available in every town, most of the better car paints are Acrylic Urethanes just like the Awlcraft 2000 except they have been doing it longer.
We do roll and tip ,mostly on wood boats and one steel trawler yacht we look after as it is quite appropriate usually we use one part paints such as Brightside or Toplac although we have done Awlgrip job on a 55ft wood boat which i personally dont think was appropriate.
Ok, i like the roll and tip method and intend to try it with a car paint some time,'maybe on my dinghy, i have tried it on a test panel with some Nason Fullthane that was left over from a spray job and it went on nice.
We had a Cherubini 44 in the shop a few years ago for new teak decks and it was very interesting as one side was sprayed with Awlgrip and the other side which had been repaired had from dock rash and,due to Awlgrip not being repairable,the whole side had been repainted using the roll and tip method(it was done at another marina which was not allowed to spray) My understanding is that this was their first Awgrip roll and tip job, now i knew the story but didn't know which side was done so when i looked it over i walked along the stbd side looking closely and thought i detected some brush marks near the bow so was pretty sure this was the roll and tipped side,when i walked around to the port side i was able to confirm this as the sprayed side was a bit dry and orange peely,Yes the roll and tipped side was a lot better,they did a great job of it.I want to do more of them but most customers want the spray job so i will probably need to do it on my own boats.A big plus is how all the paint ends up on the boat instead of in the air so the paint cost is a lot less.
Steve.
__________________
http://www.cruisersforum.com/forums/f55/spray-vs-roll-and-tip-need-hull-paint-job-help-33196.html

 

[Jim@sea]

guy i used to do a bit of work for did a lot of car paintwork using 2pack.he used only a filter type mask(not airfed).he sadly died a couple of years back.he was riddled with cancer.he never smoked.i'm not saying 2pack caused it,but why risk it?

I also knew a paint sprayer who died but of course many paint sprayers started off when the only face masks were paper, which obviously only filters dust not the fumes. We did have some airfed masks but they were virtually as harmful as most garage compressors had in their pipework an oil thing which was supposed to send a mist of oil to the air wrench tools used by the mechanics in the workshops, and of course sending a mist of oil down the airlines to the air fed masks in the spray booth.
Certainly brushing with 2 pack when the boat is outside is the least dangerous.

 

[sailorman]

Hi, just as the title suggests, what is the difference with automotive two PAC car paint and any of the two part boat paint?paint

There IS only one 2 pack marine paint
Awlgrip G-Line

 

[nickypea]

Blimey! All I want to do is paint my boat and not die doing it. Can I use dulux emulsion on the hull instead? I was looking at the awlgrip paints when I thought if there was a difference between car paints and marine paints. Might start looking at awlgrip again.

 

[30boat]

Blimey! All I want to do is paint my boat and not die doing it. Can I use dulux emulsion on the hull instead? I was looking at the awlgrip paints when I thought if there was a difference between car paints and marine paints. Might start looking at awlgrip again.

Use International Perfection.It's extremely tough,miles cheaper than Awlgrip and it's formulated to be rollered or brushed on.With a bit of care you'll get a very good finish that'll last a very long time.I did my boat with it and am very happy.

 

[hartcjhart]

That is a load of Bollox and is very dangerous ignorant advice. Anyone reading his thread should pay much attention to the information given by Lakesailor. I once (back in the early 80's) in ignorance used two pack Isocyanate paint to spray a van. I used a spray mask which had always proved to me more than adequate when spraying cellulose. During the evening after a days spraying I became ill, very ill and remained so for over a week.

and pray what part of this BOLLOX did you not read and understand

buy your paint and ask the supplier to give you a copy of the COSHH data sheet for it

 

[sailorman]

Blimey! All I want to do is paint my boat and not die doing it. Can I use dulux emulsion on the hull instead? I was looking at the awlgrip paints when I thought if there was a difference between car paints and marine paints. Might start looking at awlgrip again.

Look in Yachting World Ads, its often stated "Awlgripped" NOT "Blaked or International" they never ever get a mention

 

[MickH]

Look in Yachting World Ads, its often stated "Awlgripped" NOT "Blaked or International" they never ever get a mention

I've been asking a top professional for advice as I needed to spray over some damage to a grp boat. One of the important questions was the quality of modern acrylic polyurethane paints used in vehicle refinishing. He incidentally has had boats and confirmed that the latest acrylic/poly vehicle pains are very tough indeed. He quipped that he did not think for a minute that Mr Lamborgini or My Bently or similar top manufacturers would advocate spraying their vehicles with anything less than the very best paint refinishing systems especially the lasting qualities of the paint on those vehicles.

Safety has obviously got to be carried out by the user of these paints to stop the product getting into their lungs or
any one nearby for that matter. The so called gel coat that is supposed to be a reasonably thick layer is not found on some modern boats and is found to be no thicker than a paint job. One other nuisance is the fact that white gelcoat hardly ever matches the existing gelcoat on a white boat dispite the boat being only 5 years old !
It's nice to be able to get a white paint that will be hard when finished that matches the colour of the boat without hours of flatting.

 

[Daydream believer]

With current equipment available for paint matching gel colours can be matched so accurately that one cannot see the join. A friend of mine repaired sailboards for years & now does grp repairs etc. He repaired my dinghy & i still cannot see the join 3 years later

 

[PCUK]

For cheapness look at Jotun industrial two pack paints. Used throughout industry on ships.

 

[MickH]

Nice day today 23 C so got the old diving cylinder out & as it had 3000 psi in it clamped the expensive 'DV' on it & put the first coat of white 2k on = beautifully matched by a professional who is a really nice chap....... The only thing was 10 minutes later could hardly see where to put the second coat on !
Of course time will tell but I have every faith in my aquaintance because he has the very best reputation from motor engineers who know of him. They always tell me he ain't cheap but you cannot fault his work. I was repairing his oil fired burner that warms his 'booth' and I noticed he had no less than two Bentlys and a Lamborgini in for accident repairs.
I just looked at the last coat and there is no visible mark or colour difference where it blends with the gel coat.... I'm very happy.
Not least learning........