Got a customer who has a customer, who he is doing some sign work for, of which I am also included io the job. He has allowed his customer to somewhat dictate on how to execute the job of which part of it would include Sherwin Wllliams latex paint on DiBond. I told him that I'm not too sure about coating DiBond with latex paint. What do you think? Latex on DiBond? Good or Bad idea?
Posted by Brent Logan (Member # 6587) on :
A lot of the Walldog murals were done that way. Scotchbrite the Dibond and use a good primer and you should be fine with SW latex.
Posted by Bob Sauls (Member # 11321) on :
Alicia, I can recommend SW. Adhesion Primer followed by SW Reliance or SuperPaint. I have followed Sam Staffan's lead and skipped the primer all together at times.
Here is the important part. Lightly sand or heavily scruff the finish. Then thoroughly wash and rinse with a degreaser. I use Simple Green concentrate. Any oily contamination will give you fits. Latex primers can be rolled on with great success. The actual paint will not lay down quite as smoothly as the primer with a roller. If your background will be a dark color, I advise you to have your primer tinted gray to level 4 or 5. This may save you several re-coats. It will never dry as hard as oil based...but it will dry harder over several weeks. Never stack anything against it particularly another waterbased panel. Nancy and I enjoyed meeting you in Arcola. I did use the mahl stick today thanks again for the instruction.
[ August 15, 2012, 04:07 PM: Message edited by: Bob Sauls ]
Posted by Michael Boone (Member # 308) on :
whats the plan for lettering it?
Posted by Wayne Webb (Member # 1124) on :
This is "PolyMetal" which is close to the same thing as Dibond. The only difference would be whatever they coated with at the factory. I scuffed the whole sheets with sandpaper, then using an HVLP gun sprayed on a coat of Sherwin Williams Bonding Primer, two coats of Sherwin Williams DTM latex, then cut the letters out on the router. They've been up for about 4 years and still look new.
[ August 15, 2012, 05:17 PM: Message edited by: Wayne Webb ]
Posted by Alicia B. Jennings (Member # 1272) on :
Hey thanks a lot. The only thing I will be doing on this sign is knocking it a foot shorter painting the backgroud and adhereing/gluing HDU foam lettering and relief cut spheres.
Posted by Joy Kjer (Member # 3026) on :
Some people like to prep the surface with Wilbond after scuffing it.
Posted by Alicia B. Jennings (Member # 1272) on :
Although I must say, I told the guy I'd cost more that way because I'd have to order a full gallon of paint. Where as with the 1-Shot, I'd just mix, match and paint. But what do I know about painting signs.
Posted by Wayne Webb (Member # 1124) on :
For small amounts, you can mix combinations of red, blue and yellow latex to get most any color you want. Shade and tint with black and white, just like your would with Onshot/
Posted by W. R. Pickett (Member # 3842) on :
Good latex is avail. in quarts here. In any color you desire.
Posted by Deri Russell (Member # 119) on :
I have never used One Shot, or oil base anything except for the odd letterhead/pinstriper/walldog event. Always latex on everything for nearly 20 years. Unfortunately it does hold up. For years and years and years.......lol
Posted by Wayne Webb (Member # 1124) on :
When my daughter was about three, I painted her play house with pale purple, pink, and spring green latex. She's almost 26 and the playhouse is still pale purple, pink and spring green. It could use a fresh coat though; maybe for the grand kids.
Posted by Jean Shimp (Member # 198) on :
I don't know if this is valid still but I tried painting Dibond a few years ago and had a hard time getting either latex or oil to bond to it. I believe the finish on Dibond was polyester. Polymetal has a baked on enamel finish, I'm told, making the painting method different than Dibond. If you are adhering letters to the surface the bond will be to the paint so make sure you've got good adhesion on your painted surface to substrate. Also, latex colors don't mix as well as oil. They tend to get "muddy" looking real fast when combining colors. Home Depot sells little 3oz. sample cans of any color you want. Only problem is they are not very glossy.
Posted by Dale Feicke (Member # 767) on :
Hey wayne,
Just curious......why'd you use primer before DTM paint? That stands for Direct To Metal.....you really don't need primer with that, do you?
Obviously, what you did held up, but just curious....
Posted by Dave Sherby (Member # 698) on :
My first attempt at painting latex (Porter Acri Shield) on Dibond was 6 years ago and the signs look like they did the day they went out of the shop. I've been keeping an eye on them since it was my first latex on DiBond job. I just scuffed the DiBond with a 3M maroon pad and rolled on 2 coats. Easy peasy.
