Galvacoat can be applied by brush, roller or spray equipment. It has very good resistance to UV exposure and can therefore be applied as a one coat system for painting galvanised steel in outside weathering conditions.
The galvanizing to be coated must be free of dust, rust, oil, grease and soluble salts (white rust). After welding, any damage to a galvanized film should be cleaned and any rust removed. A cold galvanised material with a minimum zinc content of 92% should be applied to the damaged areas at a minimum thickness of the galvanized film plus 10%. A combination of degreasing and steam cleaning is the optimum way to remove any dirt, grease and zinc salts. Wash down with fresh water.
Add the hardener to the base paint (converter) and mix well.
Airless application: Dilute 0-10% with thinner PU41
Airmix application: Dilute 5-10% with thinner PU41
Air assist application: Dilute 10-20% with thinner PU41
Recommended spray nozzle size for airless spray : 0.015-0.017”; 50-80 degree angle
Relative air humidity: max 85% (no condensation on the substrate)
Temperature during application and drying: 2C above the dew point. Never apply below 5C.
Max. temperature during application: 40C
Tack free: 4hrs
Recommended thickness: 40 – 120 microns
Potlife: 6 – 8hrs at 20C