Question: How Deep Should A Fence Post Hole Be?

Is 2 feet deep enough for fence posts?

The 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..

Will wooden posts rot in concrete?

A: Actually, your point is well taken. 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. … The concrete at the top should be sloped away from the post to grade level to avoid water pooling around the base.

Can you put dry concrete in a post hole?

Fast-setting concrete is ideal for setting posts because there’s no mixing—you simply pour the dry concrete from the bag right into the hole, then add water. … Under normal curing conditions, you can apply heavy weight to the post (a basketball backboard, for example) after just 4 hours.

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.

How do I stop my fence post from heaving?

Frost heave is a condition that happens when water freezes in the soil and then the soil thaws out. The resulting pressure literally “heaves” the fence posts out of the ground over time. The best way to prevent frost heave in fence posts is to set them on a drainage bed prior to pouring the concrete.

Is 3 feet deep enough for fence posts?

You should always bury one-third of your fence post underground. For a 6-foot fence, for example, you need a 9-foot post, so that 3 feet can be underground. This means that unless you are building a 2-foot fence, which is unlikely in any garden, a 1-foot hole will not be deep enough to support your post.

How many bags of concrete do I need per fence post?

two bagsOur example post will require two bags for every post if you’re using fast-setting concrete. Fast-setting concrete is ideal for installing fence posts since it doesn’t need to be mixed in a bucket or a wheelbarrow.

What is the easiest way to dig a post hole?

How to Dig a Hole: Pro TipsStep 1: String your line and pound the stakes. … Step 2: Carve out a soil divot with a spade. … Step 3: Loosen earth with a tile shovel. … Step 4: Use your clamshell digger. … Step 5: Use a reciprocating saw on large roots. … Step 6: Dislodge rocks with a digging bar. … Step 7: Tamp the soil with the other end.More items…

How do you keep fence posts from rotting in the ground?

Tamp down the gravel. You can use concrete, if desired, but the moisture in the concrete can sometimes cause wooden posts to rot more quickly, while the gravel allows water to drain quickly away from the fence post and into the soil.

How many bags of quikrete do I need to set a fence post?

Remember, the depth of the post hole should be one-half of the above-ground post height. (Example: For a 6 feet above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground). The calculator will indicate the number of 50 lb. bags of QUIKRETE® Fast-Setting Concrete you need.

What is the best concrete mix for fence posts?

In terms of the ratio to use for a concreting fence posts, the best mix is a mix of 1:2:4 (1 cement, 2 sand, 4 aggregate). Concrete is always best mixed using a cement mixer to ensure it’s even, but if you only need to mix a little, hand mixing is ok (see mixing concrete project above for tips on how to do this).

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 18 inches deep enough for fence post?

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. … For our six-foot-high fence post, we would need a hole that’s 36 inches deep and 12 inches in diameter.

How deep should you dig the holes for 1.8 m wooden fence posts?

Hole Sizes for Fence Posts and Other Types of PostsPost sizeHeight of post above groundHole size (width x depth)1.8m (6′)23cm (9”) x 60cm (24”)100mm (4”)90cm (3′)30cm (12”) x 30cm (12”)1.2m (4′)30cm (12”) x 45cm (18”)1.8m (6′)30cm (12”) x 60cm (24”)5 more rows

Should fence posts be set in concrete?

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.

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

If you find the RV posts I mentioned earlier, they are steel, treated and when put in concrete will last 25 years or more. It will not last long (7 yrs max) if the bottom of the post is wet. If you place stone at the base of the post, it should last 20+ yrs.