u/JuiceyJello

I’m currently refinishing my fence and I’ve hit a wall. The wood is heavily greyed/oxidized, and I can’t seem to get back to "clean" wood without getting the nozzle dangerously close.

Current Setup:

Machine: Ryobi 1800 PSI electric.

Chemical: 30 Second Cleaner (1:1 ratio with water).

Process: Apply, let dwell for 20 mins, then hitting it with 15° and 25° tips.

Even after 20 minutes of dwell time, the grey fibers aren't "melting" off. To get any results, I have to get so close that I’m worried about furring the wood, and the pace is painfully slow.

This first image is a day after I pressure washed. The second image is from last night after I got really close. https://imgur.com/a/Cj11Whn