colvic
New member
Is it possible to spray the two pack polyurathene paints; do they need thinning or a weaker mix, i.e. 5 or 6 to 1 instead of 4 to 1.
Two Pack Paint
- Thread starter colvic
- Start date
david_bagshaw
Well-known member
Normally would be sprayed with about a 20% dilution with the appropriate thinner.
David
www.yachtman.co.uk
David
www.yachtman.co.uk
Strathglass
New member
They spray well but do NOT change the mixing ratio add the appropriate thinners and if necessary add some accelarator to speed setting time. I prefer using a 1.2mm nozzle. Under NO circumstances spray two part paints without using an air fed mask. I always use two seperate compressors one for the spray gun which can be sitting in a warm area and a second compressor well away from the spraying fumes. Very good results are possible.
Iain
Iain
coliholic
New member
Uuh Ian, why two compressors?
Strathglass
New member
Colin, The fumes from two part paints contain isocyanites which are very harmfull. Unless one has quite a powerfull compressor and thick airbags when you are feeding both a compressor and a face mask the pressure starts to drop when you begin spraying. The mask itself is very greedy with air and it must be well away from the boat to stop the pick up of fumes. I find it most convienant to use two compressors with the spray gun one quite near the boat and the second compressor on a long air pipe feeding the mask. I currently only have one compressor which is too small for both tasks but find it easy to borrow another small one when required.
I feel this is much safer than using splitters from one large compressor. I have had good results spraying with both 709 and the more professional two part paints and varnishes.
Iain
I feel this is much safer than using splitters from one large compressor. I have had good results spraying with both 709 and the more professional two part paints and varnishes.
Iain
coliholic
New member
Thanks, I understand now, didn't realise that the mask had a separate air supply. All makes sense now.
BTW have you tried spraying Awlgrip? I've seen a couple of boats painted with it and the finish was spectacular, real wet-look gloss. Is it more difficult to use or what?
BTW have you tried spraying Awlgrip? I've seen a couple of boats painted with it and the finish was spectacular, real wet-look gloss. Is it more difficult to use or what?
G
Guest
Guest
Awlgrip is a real bear to use. I have friends here in the states that have used it.....and it has taken awhile for them to get used to using it. It can produce a beautiful finish....but its not for amatuers or beginners to paint with. Here in the US it is very expensive...about $90.00 a quart (liter). All of the catalogues I have ever seen say that Awlgrip is for professional application only.
The biggest hurdle with any paint job is the hull and deck preparation. Most paints will "hilite" faults or defects and damage in the boat if not properly prepared and repaired.
Interlux/International Paints gives a good run down on what is needed on their website.
The biggest hurdle with any paint job is the hull and deck preparation. Most paints will "hilite" faults or defects and damage in the boat if not properly prepared and repaired.
Interlux/International Paints gives a good run down on what is needed on their website.
oldsaltoz
New member
G’day Colvic.
I sprayed my hull with 2 pot polyurethane, no problems, and a fantastic finish. Using a number 2 tip and around 60psi with 10% thinners, compressor rated at 18 cubic feet per minute.
A word to the wise though, make sure you read the manufactures specification and don’t make a brew that you think will work better, it wont.
Look for one of the long chain polymer polyurethane paints, they do a fantastic job of self-levelling and produce a very high gloss that will last for years.
Also have a look at the link below, some helpful stuff to be found including safety data sheets etc, plan on 3 or 4 light coats, this stuff dries fast in warm weather and you can spray no stop around a 30 foot boat.
http://www.yachtpaint.com/intropage.htm
Avagoodweekend Old Salt Oz……
I sprayed my hull with 2 pot polyurethane, no problems, and a fantastic finish. Using a number 2 tip and around 60psi with 10% thinners, compressor rated at 18 cubic feet per minute.
A word to the wise though, make sure you read the manufactures specification and don’t make a brew that you think will work better, it wont.
Look for one of the long chain polymer polyurethane paints, they do a fantastic job of self-levelling and produce a very high gloss that will last for years.
Also have a look at the link below, some helpful stuff to be found including safety data sheets etc, plan on 3 or 4 light coats, this stuff dries fast in warm weather and you can spray no stop around a 30 foot boat.
http://www.yachtpaint.com/intropage.htm
Avagoodweekend Old Salt Oz……
david_bagshaw
Well-known member
Have sprayed with awlgrip, as Resolution is painted with the same.
I would add to the above posts
1 I personaly use a 3M face mask of the type that has 2 canisters to remove the chemicals, ie not a dust mask, as used by the Auto refinishing trade. and one or the other is essential, for a long life. (yours)
2 A good idea using 2 compressors , but when doing deck areas it is another lot of pipes to distroy just finished work,
Awlgrip
Is unbelievably expensive, but is excellent, high gloss, wears well matches in on repair well. can be applied by brush or roller as well, but I find spray is easier.
Problems, as with all paints of this type, curetimes in uk temps so accelerators need to be added. humidity can be a problem in sheds.
As a paint it is not more difficult to use than other two pots, the same care as to mixing ratios, standing time , clean up , dilution etc have to be followed, for that perfect wet gloss look. Thke a look at http://www.uspaint.com/appguide.html
for the Awlgrip app guide, do it their way & strange , it works.
If you go the Awlgrip route, you will be pleased with the finish and how long the finish stays first class (Resolution was last totally repainted in 1991 by Berthons UK), but the wallet will take a real hit. UK supplier marine ware southampton, speak to John Newnham, who knows his stuff.
David
www.yachtman.co.uk
I would add to the above posts
1 I personaly use a 3M face mask of the type that has 2 canisters to remove the chemicals, ie not a dust mask, as used by the Auto refinishing trade. and one or the other is essential, for a long life. (yours)
2 A good idea using 2 compressors , but when doing deck areas it is another lot of pipes to distroy just finished work,
Awlgrip
Is unbelievably expensive, but is excellent, high gloss, wears well matches in on repair well. can be applied by brush or roller as well, but I find spray is easier.
Problems, as with all paints of this type, curetimes in uk temps so accelerators need to be added. humidity can be a problem in sheds.
As a paint it is not more difficult to use than other two pots, the same care as to mixing ratios, standing time , clean up , dilution etc have to be followed, for that perfect wet gloss look. Thke a look at http://www.uspaint.com/appguide.html
for the Awlgrip app guide, do it their way & strange , it works.
If you go the Awlgrip route, you will be pleased with the finish and how long the finish stays first class (Resolution was last totally repainted in 1991 by Berthons UK), but the wallet will take a real hit. UK supplier marine ware southampton, speak to John Newnham, who knows his stuff.
David
www.yachtman.co.uk
ccscott49
Active member
Hi! David, how you doing, what is Resolution built out of?
