In some cases homes have front doors and/or garage doors with a shiny natural finish. These
doors are most likely finished with an exterior varnish. At the first sign of cracking or
deterioration, these doors should be sanded and recoated. If the finish has begun peeling and the
wood is decaying, it may be necessary to strip the finish off and start over. We recommend using
an exterior spar urethane. Spar urethane comes in a variety of sheens and seems to hold up a bit
longer than spar varnish or marine varnish. None of these products are recommended for usage on
siding or decks.