I have to re do my fence at my auto water. I had just a cattle panel that was cut out around the water. This morning had a cow in heat on the other side. My big bull decided he wanted over there so he found the week spot and started pushing on it. He stopped when I told him to but then went right back to it as soon as I turned my head. I gave and let him over to the other side. He was going to get there on his own soon enough anyway. Thinking I will rebuild it with frame and 3/4 plywood. I was already planning on welding up pipe for it but I think it would be better if they cant even see each other on the other side.
Mike, I used 1/2" marine plywood on the chicken pen I built in 2008. By 2014 it was rotted through and I had to replace it. The replacement plywood has delaminated and is not long for this world.
I used 1" x 6" x 16' oak boards to build my corral in June 2005. I'm just now beginning to replace some of them.
A saw mill near hear specializes in these oak fence boards and sells them for $6 each. Maybe there is a place like that near you, too.
My isolation area is made out of cattle panels. Several times it has proven inadequate to contain a cow that was intent on getting to her bull. I've never had a bull get in, but the cows have more resolve or are wilier. It will probably last a very long time. I haven't seen any rust on the cattle panels, yet. It was built in 2008 for Ms Fermoy.
I have my own sawmill. Oak is not real common here although I have many on my property. They dont die very often and I dont cut down live trees. When I do get it I cut it up for furniture. I do have some mulberry which is just as rot proof but I was thinking solid board would be better if they could not see each other it would remove the temptation to push. I was thinking using treated plywood plus spraying it with deck sealer. Might be a good idea to put metal over the top edge to protect it from the delamination you mentioned.
Yeah, the rain on the edge is what ruined mine. Your ways of protecting the edge should take care of the top edge. Then all you'd have to worry about was groundwater and manure working on the bottom.
My trailer has plywood in the doors. It has metal across the top, like you said, and a 6" band of metal across the bottom edge. If you put a 6" board of your mulberry across the bottom for the plywood to rest on it should be good for years.