The Deck Doctors was started in the 1997 by Geoff Dilley. I have over twenty years experience in the construction industry. I make it top priority to educate myself on all of the outdoor wood finishes that are on the market, as well as every possible process necessary to finish, refinish, restore and maintain outdoor wood structures. The market is constantly evolving with companies bringing out new products all the time and we do an excellent job of staying on top of every new product that hits the market place so we know what we are up against. We exclusively use a product called Penofin. Penofin is the finest outdoor wood finish on the market today. It is a Brazilian Rosewood oil based finish. The oil comes from a nut that is only harvested in Brazil. more... See more text