Osmo One Coat Only is a semi-transparent, satin exterior and interior wood finish that colors, protects and meets the full needs of exterior wood with only a single coat. The finish enhances the natural wood grain and texture and is also microporous which leaves a breathable surface. Does not crack, peel, flake or blister. Very durable, water repellent, moisture regulating, prevents wood swelling and is weather and UV resistant. Extremely high coverage and only one coat is required - saving time and money!