A clear, transparent varnish with exceptional durability for use on exterior wood and metal. Because it screens out the destructive ultraviolet rays of the sun, it provides more than double the service of most conventional spar varnishes and does so without loss of gloss or darkening. Especially recommended for surfaces exposed to the weather, such as natural or stained wood siding and trim, and boats, decks and spars. Decks, chairs and other surfaces subject to wear and abrasion should be thoroughly hard before use.