Wood frame door and window repair. Steps by step answers please. In Ecuador
One Time Wood Protector is the only worthwhile option. Expensive but goes a long way &amp; it has an unlimited shelf life for future re-applications. You just sand the crap out of everything until there are no long wood fibers sticking out (known as feathering &amp; is mild or surface wood rot). Then, you just paint on One Time &amp; you're good for up to 7-years. I used the Natural finish &amp; it does darken the wood like water, but gets 10% lighter after each year of exposure. I did a redwood 2-car garage door with it 3-years ago &amp; no more rot &amp; no more water wicking nor soaking, I still get gushing compliments.