Eliminating Lacquer Overspray Problems

Retarders can help overspray "melt in" to the finish. December 15, 2005

Question
I am spraying three pieces of a wall unit made of mahogany. I am having over spray trouble on the cabs that I have assembled. It seems much better to finish first, then put it together. I am using a satin pre-cat lacquer from Mohawk. I bet I sprayed a half gallon in waste. I had to tape off every inner side and spray one at a time. It seems not too many out there thin their lacquer, but I got fed up and thinning it seemed to go on wetter with less over spray. Any suggestions for cabinet interior spraying?

Forum Responses
From contributor M:
Adding retarder should take care of the problem. Although you may feel thinning the material sprays better, you may be speeding the dry time and causing some overspray. Without knowing Mohawk's products, it is difficult to suggest which retarder to use. I have pretty good results by adding up to 5 liquid ounces of Aromatic 100 (High Flash) Naptha. Some retarders tend to stay in the coating longer than others, causing sags or runs. The A-100 tends to release from the nitrocellulose better than an active retarder. I find it also wets out better, so you can see where you last sprayed.



From contributor V:
If you have a Sherwin Williams Chemical Coatings store near you, get some MAK (retarder) and add the same amount of ounces of MAK as the thinner you are adding. If you are reducing 10% with thinner, add 10% of the retarder. This will slow the evaporation rate and allow the overspray to melt in.


From contributor D:
Try some aerosol blush eliminator. It will take care of the over spray even after it dries.