Steve, we used only the base coat for a long time and then added the gloss. We have found the gloss helps with the chafing from lines etc. and it does add UV protection. Chuck To follow our adventures, go to http://trawler-beach-house.blogspot.com/ http://sea-trek.blogspot.com/ --- On Wed, 4/29/09, StWillett@aol.com <StWillett@aol.com> wrote: I had never used Cetol and recently tried some on some scrap teak before using it on my boat. I used the Natural Teak, I have read that some people top coat it with the Cetol gloss but I am happy with the appearance the satin finish of the Natural Teak product. Is there some advantage to top coating with gloss other than the visual aspect. thanks Steve Willett