Majic T&C Aluminum paint may be brush, rolled or sprayed – but spraying usually offers the brightest and most continual looking film. Normally we do not recommend thinning (reduction) for spray application, for a couple of reasons…(1) As is with many oil/alkyd coatings, these products are delivered as VOC compliant, but often at the maximum level of allowable VOC’s. To reduce this product with conventional solvents will knock the product out of compliancy – and (2) Majic T&C Aluminum Paint is a delicate balance of oils, alkyd resin, aluminum paste and allowable solvents, and is already delivered at spray consistency – reduction, even with “exempt” solvents will often times affect the paste’s ability to leaf properly, creating a film that is still functionally protective, but not as brilliant, or as “silver”, as intended.
One unfortunate trait of aluminum paints is the settling that occurs with any length of storage, or inactivity. This is common, and not an indication of “old stock” or a defective product – Any settlement needs to be stirred back into suspension with a flat paddle, or drill mixer (do NOT shake leafing aluminum products). It is recommended that the product be stirred periodically, even during application, to keep all components in proper suspension. Reduction of Aluminum Paint will actually hasten the settling of the large, and heavier, aluminum flake.
For spray application, via airless pump, generally requires approximately 1500 pounds of pressure, and an .015 orifice reversible spray tip (typically recommended as a .415 tip for an 8” spray fan, or a .515 tip for a 10” spray fan) To spray aluminum at higher pressure, or a smaller orifice, may also affect the pigments ability to leaf properly. Conventional spray (Air compressor) would require approximately 25 psi, with a 1.4 – 1.6 mm needle. The recommended applied film thickness = 2.4 mils wet (very thin application) to yield 1.0 dry film thickness (which equals the theoretical spread rate of > 600 square feet per gallon).
Date published: 2017-10-06