Lacquer over Eurethane

Can I put lacquer over catylisted Eurethane that a couple of months old?

 

i'm not a painter, but ive always heard you can do the opposite,,,you can put urethane over lacquer, but not vice versa...maybe if you used a sealer of some kind,,,probably not much help, but im sure someone will know for sure

 

it can be done if you are carefull, but if the solvents penetrate the clear, or color if single, its gonna look like you poured stripper over it.

are you just trying to spot repair something? or do a complete.

i would reccomend against doing it for a variety of reasons, but i have done it in the past. its all gonna depend on just how cured the urethane is




skull

 

I have to agree with Skull, its doable but it leads to the question why would you want to

Give us some more info here and we can better help

 

Try it on a small out of sight spot to test it first. I wouldn't hammer it on, just light coats.

 

Not recommended. The way lacquers dry will trap solvents in the 'thane below it. Even if you get away without seeing crazing (the paint stripper effect mentioned above) it will bite you in the ass once it hits the summer sun. It may also de-laminate from the base. Lacquer should only go over compatible substrates or OEM finishes. OEM finishes have a unique resin that is cured with heat making it "solid" whereas re-finish materials require air and minor heat to cure for delivery. Sealers won't do much more than slow down the process. Lacquer solvents work into the finish and slowly evaporate over time, lots of time. The current crop of HVLP spray equipment (even gravity feeds) aggrevate the process due to the volume that's applied per coat. Lowering fluid volume simply makes for a rough and peely finish.

I know you asked for the time and I built you a clock, but that's the gig. Hope it helps.

 

i would have to agree with skull and highlander, for the simple fact that the uretane probably isn't 100% cured, and 2, even if it is, i see problems down the road, even if you get past the spraying part. can i ask why?

 

I also agree. I'm afraid of the paint thickness. Compatibility problems ect...just a bad deal I think. JMO. Lippy

 

OK, I really appriciate the replys. I'm trying to do a small area and keep the "stickey" overspray under control. I'm getting ready to shoot a complete and thought this might be a way to quickin things up. I'll go ahead and make everything urethane. Thanks for the input.