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PAINT SPRAYING HINTS Cont
To obtain best results, it is vital that the surface to be sprayed is well prepared. It must be
clean, free from dust, dirt and grease. Mask any area that is not to be sprayed.
Paint Thinning
Thinning is particularly important when paint spraying. Most paints are supplied ready for
brush application and need to be sufficiently diluted for spraying purposes. Always follow
the paint manufacturers instructions. If in doubt, always consult the paint manufacturer.
A Viscous Cup (not supplied), will assist in determining the correct thickness of the paint.
Water based paints ...... 35 - 45 secs
Oil based paints ........... 15 - 25 secs
Enamel paints ............... 15 - 25 secs
Primers ........................... 20 - 30 secs
Varnishes ....................... 20 - 25 secs
Aluminium paints ......... 15 - 25 secs
Wood preservatives ..... Do Not Dilute
Wood Stains .................. Do Not Dilute
Smooth Masonry paint....dilute by 5 - 10%
Thin as required until times are achieved
Ensure the paint is free from lumps or other
matter, if necessary strain it through a coarse
filter.
The ideal viscosity for most paints is given in
the chart opposite.
Dip the cup into the paint and fill to the brim.
Time how long it takes for the cup to empty.
Water based paints (emulsions) 10-20% water.
Oil based paints (gloss) up to 10% thinners.
Cellulose paints up to 50 % cellulose thinners.
IF IN ANY DOUBT, CONTACT THE PAINT MANUFACTURER
Alternatively if a viscous cup is not available, the following information can be
used as a rough guide.
