I would like to know what 4x4 pergola kits/pieces I would need to build a 20x16 sloped/slanted pergola. I plan on also using 2x16's as joists 16" apart. I am also going to put OSB, Ice/Freeze barrier topped with a galvanized roof. I also wanted to get your input on possibly connecting the "back/high-side" with 2 90° corner brackets and a 90° T- bracket in the middle. We live in Northeastern PA and winters, snow and wind can be pretty harsh. Any advice or recommendations would be appreciated
