It may be sprayed with minimal thinning at temperatures above 60 F. Spray Applicationīooster type spray equipment is required because of Royston Roskote A-51’s heavy consistency. 040 inches is maximum per coat to reduce the possibility of mud cracking. When the first coat has dried to the touch, which will usually require less than an hour, apply a second coat at the same thickness.Īpply liberally with a generous amount at all times. Apply to cover 65 to 70 square feet per gallon, which will provide a dry film thickness of about 12 mils per coat. 70 or a mixture of equal parts of toluene and MEK.Īpply cold by brush, glove or booster-pump spray. If excess thickening occurs because of solvent losses from opened containers, restore to original viscosity with Royston Thinner No. The heavy mastic is specially formulated to obtain a thick protective coating. Thinning is not required except for cold spray at temperatures below 60 oF. Royston Roskote A-51 should be stirred thoroughly before using. Sand blasting or chemical treatment may be more convenient for in-plant surface preparation. Surfaces should be dry and cleaned of all rust, scale, soil, mud, oil, grease and other contaminants in the field by wire brushing.
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