Features 5-way wood protection and provides a clear finish that allows wood to weather gray naturally. May be used on exterior bare wood surfaces, including pressure-treated wood, which could be exposed to rot, mildew, or excess moisture. Use on structural lumber, beams, timber, sills, millwork, and roofs. Product features: Repels water, resists sun damage, mildew resistant coating, penetrating linseed oil formula, fights rot and decay. Coverage: (Smooth) 250 to 350 sq. ft. per gallon, (rough) 150 to 250 sq. ft. per gallon. Clean up with mineral spirits.