Our farm had split rail when we bought it and I love how it looks. The fencing, however, was fairly old…maybe 15 years old?..and as it aged, the rails got loose. I think the posts were drilled, not pounded, which probably was a mistake for our heavy clay - so there were areas where the posts were leaning and the rails became loose. The posts were quite solid, still, and I do think they were locust, but I believe the rails were cedar?
Anyway, the horses could reach through it and knock out the upper rails very easily, and we were perpetually walking around and replacing rails. But it did worry us about the strength and integrity of the fencing; the last straw was when I went out one morning to find nothing but the bottom rail left in place in one section…amazing that they didn’t just step over it! :eek:
Obviously this is an issue that is worse when the pasture is threadbare (as ours was when we bought it) and horses were seeking better food outside the fence, and also would be very different with 4-rail v. 3-rail which is what we had.
In the end, we replaced it with locust posts and 2x4 non-climb wire, and an oak top board (about 1x6 as you suggested). We really like this fencing and it’s awesome to sleep at night and not worry!
We did keep the split rail on the lawn side of our farm…so we can enjoy the rustic look. We have a log cabin so it complements it nicely…still don’t love the look of the non-climb as much…but feel much safer with it.