I had to power wash, sand, and re-stain the family beach house probably every 2-3 years. Seems I'm always washing the house down and re-painting everything that is metal too. Finally got tired of it and hired a painter to just paint the whole house, including the deck. I probably should have looked into the TWP thing, but I was fed up. On the plus side, have not touched it in almost 5 years now.
