How to Use Groundmaster Post System for a Fence

The time-honored method of installing a fence post is to dig a hole and use rock, dirt or cement to anchor the post in place.

Use a sledge hammer to drive a Groundmaster anchor into the ground.Use a sledge hammer to drive a Groundmaster anchor into the ground.
One alternative to the traditional method that may be suitable for some circumstances is the Groundmaster post system. The system lets you install wooden 4-by-4 fence posts by pounding in an anchoring spike, which is attached to a square collar that bolts to the base of the post. This method can be attractive for those who prefer not to dig a hole. An advantage is that the system can be taken up and reused.

Choose a location for installing a Groundmaster anchor, based on your project's needs.

Put on a pair of sturdy work gloves. Slide a 1-foot length of 4-by-4 into the square end of the Groundmaster post anchor.

Hold the Groundmaster post anchor up so that the tapered spike rests on the place where the fence post is to be set.

Tap the short 4-by-4 post you set into the square end of the Groundmaster with a sledge hammer to begin driving the tapered end of the anchor into the ground. Drive the Groundmaster spike one foot or so into the ground. Check two sides of the Groundmaster to determine if it is vertically straight. Adjust the post anchor as needed.

Drive the Groundmaster spike into the ground with the sledge hammer until the bottom of the square collar that holds the 4-by-4 post is flush with the ground's surface. Remove the short length of 4-by-4, and install a 4-by-4 fence post.

Secure the 4-by-4 fence post in place by tightening the bolts on the side of the Groundmaster, using an adjustable wrench. Check the post as it is tightened, to make sure it is plumb.

Things You Will Need

  • Groundmaster post anchors
  • Gloves
  • 4-by-4 post, 1 foot long
  • 4-by-4 posts, fence height
  • Sledge hammer
  • Level
  • Adjustable wrench
  • Hammer
  • Fence staples
  • Nails


  • Continue installing Groundmaster anchors at the spacing you have determined, based on the type of project you are installing. Attach the fencing to the posts, using a hammer and fence staples or nails

About the Author

Keith Dooley has a degree in outdoor education and sports management. He has worked as an assistant athletic director, head coach and assistant coach in various sports including football, softball and golf. Dooley has worked for various websites in the past, contributing instructional articles on a wide variety of topics.