Aerosol won't spray.
1. For heavily pigmented products. Cause: Depressed spray tip before ingredients were properly agitated. Pigmented materials settle to the bottom and, if not thoroughly mixed, can plug the spray valve stem and tip preventing proper functioning. Thorough agitation before using is essential.
2. For general aerosol products. Cause: Propellant has leaked from can or valve stem has disconnected from valve when can was pressurized. Test for disconnect by inverting can - it will spray in this position if stem has disconnected.
Aerosol can sprays but spits.
Cause: Can was not thoroughly agitated before using. Hold can inverted and clear valve. Shake thoroughly and proceed. Or: Can is cold. A cold temperature reduces pressure inside can and prevents proper atomisation. Warm can to 18 degrees C minimum e.g. by partially placing can in warm water. Do not use direct heat! Or: Spraying can continuously for prolonged period cools ingredients inside causing a reduction of pressure. As you feel can surface becoming cold, stop and allow it to warm up.
Aerosol finish turns milky white.
Cause: Blushing (moisture entrapment in the film) occurs during warm rainy weather and hot and humid periods. If whiteness appears, spray over the finish with Blush Eraser to open the film and allow moisture to escape. Or: Oil, wax or other incompatible contaminant on the surface can lead to a cloudy appearance in the finish. This can appear quickly or may be a delayed reaction. Always thoroughly clean the surface to be sprayed with De-Waxer 741.
Aerosol fisheye's (craters) in the finish caused by silicone contamination.
If you suspect a finish may have contamination, thoroughly wash the area to be coated with Wood Stain Reducer. If problem persists, apply a light coat of Shellac.
What is the difference between Jet Spray and Topcoat Lacquer aerosols?
Jet Spray and Topcoat Lacquer aerosols function very similarly. The difference is in the solids percentage and the drying time. The Jet Spray is lower in solids and slightly slower drying for use as a touch-up lacquer. The lower solids and greater open time enables better flow-out on spot repairs. However, if you spray an extra coat, you'll have essentially the same finish, but the drying time will be a bit longer.