Omni primer/sealer

[Dbarnes72]

I went to the paint store and bought primer with the intention of mixing and spraying as sealer over filler. I ended up buying Omni MP170. I've since read a lot of poor reviews of the Omni line. The question is....should I take it bake and spend the coin to go up the quality scale for primer as well as paint or can I get away with using the primer/sealer and then go with PPG Deltron for paint?? I'm convinced that I will not use Omni when it comes to actual paint. Reports are that it requires more coats to cover adequately. I'll be shooting white paint over gray primer/sealer.
p.s. Pretty darn difficult to find somebody less knowledgeable than me about paint but I think I found him working at the paint store. So much for going to the local pros.............rant complete.

 

[Nightstick]

I would first ask, who is it that's complaining about the quality of the products. DIY guys or professional shops? The majority of "doesn't work as expected" complaints involve people who don't use a product correctly... Having said that, I'm almost positive I used Omni primer and single stage paint, and I got a great result. 3 coats of primer, 3 coats of paint. It's all in the prep work, and how you apply the product.

 

[doghows72]

Isn't Omni the budget brand for PPG?.
I've use the Omni and like it. No issues for me at all.

 

[RedLeg0811]

Zeeman's brother is a professional auto body guy and he says the Omni stuff is crap and will not use it. I had a quart already for my hood and he used some of the stuff he had instead because he said it worked better. I totally trust Mark opinion.

 

[Nightstick]

I'm sure there's way better stuff out there than Omni, and if I'm paying a body shop a few grand to paint my rig I would expect them to use top quality stuff. But for doing it yourself for a couple hundred bucks, it's better than some other stuff, and you can get a very nice looking paint job with it. Just my $0.02

 

[Nightstick]

Omni paint and primer

 

[Dbarnes72]

Gotta say it looks good!! I was curious what color you went with.

 

[allenfahey]

You said you bought it to spray sealer over the filler? Do you mean body filler or primer filler? You can't spray sealer overtop of body filler. It isn't made to fill and the sand scratches will come back. I don't know the Omni system but usually mix ratios make it a primer or sealer. Not all paint lines are that way but some are.
Omni is PPG's shop line. All major paint companies have a shop line that is marketed to used car lots or MAACO type shops. Generally they are considered "junk" because color match. Color match doesn't concern you guys painting an all over like it does us in the industry trying to match existing paint. With the shop line brands the manufacturers don't spend a lot of resources in their formulas.

If you are painting it white why didn't he sell you white sealer!! Those guys behind the counter are not the guy to talk to. You want to talk to their tech guy. He is the one in the field doing demos, fixing problems for painters, ect. The guys in the store generally only know part numbers. At least that has been my experience.

If you want, you could use the grey Omni primer you have. You don't have to use the same brand primer as the sealer. Reason being is that is a mechanical bond. You spray the primer, it dries, and then you sand it. With sealer you spray it, let flash, then apply paint. It goes on without drying completely and no sanding. Sealer is a chemical bond and you could have problems if you mix brands.
Good luck and take plenty of pictures!

 

[Dbarnes72]

You said you bought it to spray sealer over the filler? Do you mean body filler or primer filler? You can't spray sealer overtop of body filler. It isn't made to fill and the sand scratches will come back. I don't know the Omni system but usually mix ratios make it a primer or sealer. Not all paint lines are that way but some are.
Omni is PPG's shop line. All major paint companies have a shop line that is marketed to used car lots or MAACO type shops. Generally they are considered "junk" because color match. Color match doesn't concern you guys painting an all over like it does us in the industry trying to match existing paint. With the shop line brands the manufacturers don't spend a lot of resources in their formulas.

If you are painting it white why didn't he sell you white sealer!! Those guys behind the counter are not the guy to talk to. You want to talk to their tech guy. He is the one in the field doing demos, fixing problems for painters, ect. The guys in the store generally only know part numbers. At least that has been my experience.

If you want, you could use the grey Omni primer you have. You don't have to use the same brand primer as the sealer. Reason being is that is a mechanical bond. You spray the primer, it dries, and then you sand it. With sealer you spray it, let flash, then apply paint. It goes on without drying completely and no sanding. Sealer is a chemical bond and you could have problems if you mix brands.
Good luck and take plenty of pictures!

Was planning to work the body filler in sections and shoot the MP170 mixed as a sealer as I go to make sure no bare spots start to rust. (Maybe not a huge concern in Eastern Wash. Then go back and sand lightly and shoot high build primer for the final finish work. The MP170 is sandable. Maybe I'm making this too difficult? I picked Grey myself thinking it would cover easy enough with white and allow me to see where I'm at painting. Once again. Rookie. Thanks for all the input.

 

[allenfahey]

i assume you are working inside a garage? Work one oanel at a time and use either an epoxy or etching followed by a high build 2k primer. I personally like etching and high build primer. It sands easier than epoxy. Neither is wrong just don't put etching on prior to
epoxy. For best results on etching I would only use a 2 part etching. Some etching is a 1k product. (No activator). For example Variprimer from Dupont is a 2 part true etch primer.
No matter what you use get the TDS ( technical data sheet) or Google it. "MP170 TDS" will give you a pdf of everything you need to know about that product from the substrates to dry times, gun tip size, ect.

If you are say stripping a fender to bare metal and fixing a dent one day and coming back a week or two and fixing another dent. I wouldn't prime it at all yet. You can prime the whole fender, sand the dent with 80, finish with 180, then prime. That wastes material priming and repriming. What I would do is get some zinc phosphate also called metal conditioner. I use Duppnt 5717S. I did a VW bug on the side that I took to bare metal. I applied the 5717S on it and did the bodywork here and there over the coarse I of a year. Never rusted or flash rusted. Follow the TDS sheet in it and it will work great for what you are trying to accomplish with sealer. It will also be cheaper than primer.

 

[t_wood_08]

Omni is the economy line of PPG. There is a lot of people that use it and there is nothing wrong with it. Having that said there is better quality of paint that's out there and you get what you pay for. I run a paint shop in Wenatchee, Wa and are main body collision line that we sell is Matrix System. It's a great quality product that directly competes with PPG's DBC and DBU at a more competitive price. DBC and DBU is PPG best solvent paint lines. All paint brands have good, better, and best. The difference between the good and best is the amount of pigment in the paint. The nicer paint seems to cover much better. As far as primers go the nicer primer should have more solids and fill better than the cheaper. Dbarnes72 you can pm me if you have any more paint questions. I would be happy to help.

 

[Dbarnes72]

Dbarnes72 you can pm me if you have any more paint questions. I would be happy to help.

Thank you. A most generous offer. Kinda typical of the folks that hang out here!

 

[nvrstuk]

paint....

Wenatchee? ...and here ive been buying paint supplies in Yakima! ! Ill touch base with you in a few weeks if that's ok?

 

[t_wood_08]

Yeah no problem. Just pm me if you have any questions.