This two story deck was carefully power washed after being treated with oxalic acid. The contaminants of mildew and tannins from the surrounding walnut and hackberry trees were removed in the cleaning. Sherwin Willliams’ Superdeck in a semi-solid custom match was brushed over new and existing wood to give two and in some places 3 coats of a durable water-born protectant. Brushing is clearly more of a commitment, but any deck of age will have open graining and will need the extra labor. Before the coatings were applied all of the cap rails and many of the top and bottom rails were removed and replaced and balusters were put back in their original condition.
