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Circa 1850 Exterior Varnish is a clear, tough marine grade coating that protects and beautifies all exterior wood surfaces. Its unique polymerized tung oil formula provides a breathable water repellant surface. Rain and snow cannot penetrate the coating to damage the wood. Circa 1850 Exterior Varnish contains transparent absorbers to screen out UV rays and inhibit the graying and fading effects of the sun. It also incorporates a superior fungicide and mildewcide to increase performance. Made by Swing Paints. Circa 1850 Exterior Varnish can be applied onto bare, stained or finished wood. Sand new wood to obtain a smooth, uniform surface. For existing woodwork or furniture, clean thoroughly to remove dirt and mildew. Stir contents thoroughly prior to and during application. On bare wood, thin the first coat with 10-25% turpentine. Apply a thin coat of Circa 1850 Exterior Varnish using a pure bristle brush. Apply evenly with long strokes in the direction of the grain. Allow to dry for at least 24 hours. Remove all dust and apply a second or third coat as above. Circa 1850 Exterior Varnish may be applied using compressed air sprayers.