We take the natural charm of Doug Fir tongue and groove siding and factory machine finish each board in this beautiful Bleaching Stain. This Bleaching Stain is designed to accelerate the natural weathering process of unfinished wood. In this formulation is a small amount of gray to give it a gray stained look but as the wood is exposed to the natural elements the color will change to a "natural driftwood gray color". Typically it will take 3-6 months for the finish to achieve a uniform weathered look. Factory applying the stain to all six sides provides protection against water and harmful UV rays from the sun.