When should fence rails be installed in relation to fence posts?

• A. After the posts have set
• B. Before the posts
• C. After the fence is finished
• D. Before the posts have set

Answer: (A)

Rails should go in after the posts have set. The vertical posts form the backbone of the frame, and letting the concrete or soil around them cure first locks them in plumb and in place. If you attach rails before the posts have fully set, the posts can shift or tilt as the concrete cures, causing misalignment and uneven gaps between posts. Once the posts are stable, you can run a guide line, ensure consistent height and spacing, and fasten the rails firmly between the posts, creating a solid, square framework for the rest of the fence.