re: Fence Question: Wooden Fence with Aluminum Post vs Wood Post

What you want are galvanized steel sch 40 posts (2-3/8 OD). They’ll outlast you if they’re set correctly.

Problem with treated wood is that unless you get KDAT, it’s likely going to twist or warp on you. Also, newer materials and processes for pressure treating just doesn’t perform as well as the treated products of the past. I had some concrete poured less than 7 years ago, and most of the 1x4 ground contact treated lumber used for the expansion joints is already rotten.

Spend a little more money and go with steel.