We take the charm of Cedar tongue and groove siding and then factory machine finish each board in this beautiful Dark Gray semi-solid stain. This stain gives the wood a rich dark gray color allowing the natural wood grain to still show through. When the stain is machine applied to all six sides, it protects the wood against moisture and harmful UV rays. The oil in the stain penetrates the wood and the finished product has a water repellent and mildew resistant rich finish.