Gravel, which comes in several kinds, is a frequent backfilling for fence posts. Some gravel is blended with sand to make it finer, while others are crushed rock. Size matters for the majority of undertakings. When selecting gravel for fence post holes, there are a few important variables to consider.
When a fence post hole is excavated, a space for water to gather is created. This isn’t an issue for the earth, but if you install a wooden fence post there, the water will damage the wood over time. Rusting will occur on metal fence posts. Larger gravel will allow water to flow down to the ground below, preventing the post from soaking in stagnant water for extended periods. Large gravel will not sit as well in the hole, and the fence post will be unsupported.
Finer gravel will provide a more secure bottom for the fence post to set on. If the gravel is too fine, however, water will not drain through as well and may end up collecting around the fence post. For this reason, gravel mixed with sand, and extra fine gravel should be avoided.
For fence post holes, pea gravel is usually utilized. Gravel three-eighths of an inch in size is a nice middle between drainage and support, however, gravel close to that size can also be utilized.