Repair Issues

Wood fences are prone to three types of disrepair:

Rotting posts
Moisture from the soil can cause posts to rot and fall away, which can lead the rest of the fence to sag and become unstable.
The fix: Use pressure-treated posts set in concrete.

Sagging fence
In addition to unmoored fence posts, fences can sag if the posts aren’t deep enough in the soil.
The fix: This is a difficult problem to correct later in the life of a fence, so make sure your fence posts are deep enough—the standard depth in most areas is 2 feet.

Loose rails and boards
The rail is the part of the fence that runs horizontally, parallel to the earth. The boards are the “face” of the fence—they are placed vertically between the posts.
The fix: Loose boards may be put back into place with galvanized screws or nails. Rails that have come loose may be fixed in a similar way using galvanized fence clips.