Quick Answer: How Deep Should Post Be For 8 Foot Fence?

What is the minimum depth for a fence post?

2 feetThe minimum depth that you should dig your fence post holes for panel sections is 2 feet.

A general formula is to dig the holes one-third to one-half of the post’s aboveground height.

The deeper you dig the holes, the more stability your fence has, but you must also purchase longer posts..

How big of a hole do I need for a 4×4 post?

A general rule of thumb is to dig the diameter of the hole at least 3-4 times the diameter of the post. For example, if setting 4 x 4 wood posts, dig holes 9-12″ in diameter. Posts should be centered in the hole and the posts should always have concrete under them.

How many posts will a bag of Postcrete do?

“Usually one bag of postcrete per post is enough, however you can use a two bags per post if you feel this is needed. The instructions are on the bag.”

Is 3 feet deep enough for fence posts?

The general rule of thumb when setting a post is that the depth of the post’s hole needs to be one-third to one-half of the actual above-ground height of the post. So, a six-foot-high finished post ideally needs to be buried three feet into the ground.

How do you keep fence posts from rotting in concrete?

The ideal solution is to eliminate contact between soil and wood. Using a metal post anchor set in concrete is probably the most effective method for achieving maximum longevity. To help keep the post from wicking water, choose an anchor that spaces the post bottom away from the concrete.

How deep should a 10 foot fence post be?

As a general rule of thumb, you’ll need to place at least 1/3 the height of the post in the ground. For example, a 6-foot tall fence will need at least 2 feet of post in the ground.

How deep should a 5 foot fence post be?

Dig deep. Measure the post and plan on burying at least a third of it. For a 5-foot fence, you’d want an 8-foot post and you’d need a 3-foot hole.

Should I use 4×4 or 6×6 fence posts?

Instead of 4×4 posts, go with 6×6 posts. The extra size makes a huge difference. It’s a smart place to invest a little extra in your fence, because if your posts distort after they have been set in the ground with concrete, they are extremely difficult to replace.

Should I use concrete for fence posts?

Setting Fence Posts in Concrete Concrete is the most secure material for setting fence posts, especially if you have sandy soil. Gravel may be okay with dense, clay-heavy soil, but in looser soil, concrete is the only thing that will truly keep your fence posts stuck in place.

Do fence posts rot in concrete?

Simply setting the posts in concrete does create a condition that will accelerate rot in the bottom of the posts. With pressure-treated posts, the rot will be slow. … First, the posts should be set on top of a bed of coarse gravel 3 to 6 inches deep, so the base of the post is in contact with the gravel.

How deep does a 4 foot fence need to be?

Dig post hole so diameter of the hole is 3 times the width of the post (i.e., the hole for a 4” wood post should be about 12 inches wide). The depth of the hole should be 1/3-1/2 the post height above ground (i.e., a 6-foot tall fence would require a hole depth of at least 2 feet).

What size posts do I need for a 6ft fence?

If you’re setting wooden or concrete posts in concrete you’ll need 8ft (2.4m) posts for a 6ft (1.828m) fence – i.e. your posts are 2ft (0.6m) longer than the fence height. Use 4in x 4in posts for fences of 5ft and over and 3in x 3in posts for anything under 5ft.

How many bags of concrete do I need for a fence post?

Mix two 50lb bags of concrete with water in a mixing tub or 5-gallon bucket. Add concrete into the hole and around the 4” x 4”. Depending on your climate, let concrete set up for 24 – 48 hours.

How do you secure a fence post without concrete?

Procedure:Find a concrete surface and lightly tamp your digging iron against it. … Remove the turf and topsoil from the site of the post. … Dig the hole putting the displaced earth onto the tarp. … Pour 4 inches of gravel into the hole.Place the post in the hole. … Add another 2 inches of gravel around the base of the post.More items…•

How long will a treated 4×4 post last in the ground?

40 yearsThe treated post that are rated for ground contact are guaranteed for 40 years.

How long do pressure treated fence posts last?

With that simple treatment, the average life of the lodgepole posts may exceed 50 years, and Douglas-fir and black cottonwood posts may each average about 40 years. A similarly treated series (88) of Douglas-fir posts with bark left on the upper portions should last about 36 years.