Our pressure treated is Hem Fir and the treatment seems painted on because it doesn’t go all the way through the board (we have to paint preservative on all cut edges)
The drilled track idea was my first idea, but I’d be drilling 7” holes that will clog up. I’ll relook that idea though.
The whole open sides idea came from the 6’ x 3’ pre made powder coated panels. When I divide the distance to get even post spacing, I had to create a way to make oversized panels that could be trimmed to fit and all end up within an inch or so of each other. I didn’t want to aim for exact panel to post spacing and then have a small filler panel somewhere.
And I can’t let my dog roam free so the spaced gap has to be less than 8”.
I was planning on 12’ black farm gates, but no one has those in 12’ around here. Green. Red. Or galvanized.
So then the one guy says he can order black in 14’.....so that changed things a bit.
I’m having some trees removed Monday that are dying and would destroy the new fence some day, so once that’s done I can dial in the precise post locations.