After a serious scrubbing (and de-molding) with oxygen bleach and a coat of slightly tinted sealer, the deck has gone from brink-of-disintegration grey to a nice healthy, radiant brown. We had no idea the transformation would be so dramatic. It took six gallons of sealer and, according to Bob, could use another coat. But, and I quote, "it ain't gonna happen." It was a big ugly job and I thank my wonderful husband for doing it.