Quick Answer: Is 3 Feet Deep Enough For Fence Posts?

How long will wooden posts last in concrete?

Reason being that the old chromated copper arsenate (CCA) wood treatment was banned in 2004 and modern treatments are no where near as good.

Life expectancy of posts now is anywhere from 18 months to 5-7 years max..

How deep should post be for 8 foot fence?

The depth of the post hole needs to be 1/3 to 1/2 the height of your fence. For example, if you are building a fence that’s 6 feet tall, you will need a hole that is at least 2 feet deep. That also means that you’d need to use an 8-foot post. The hole will need to be about 3 times the width of your post.

Will wooden 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. … The concrete at the top should be sloped away from the post to grade level to avoid water pooling around the base.

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.

What is the distance between fence posts?

Typically, fence posts are spaced between six and eight feet apart. The corner posts are set first. To align all of the posts in between, stretch a line from each corner post to work as your guide.

How long will pressure treated posts last in the ground?

40 yearsTherefore, if you are in the look for proper construction materials for your home, then consider investing in pressure treated wood. According to Forest Products Laboratory and other research agencies, pressure treated poles in the ground can stay up to 40 years without any signs of rot.

How do you keep fence posts from rotting in concrete?

Treat the Post With Preservatives Soak the bottom of the posts in a wood preservative containing copper napthanate, such as Cuprinol. Note: Available at some paint stores and home centers, this wood treatment is specifically designed for in-ground applications.

How Long Should Concrete Cure fence posts?

The concrete sets up in 20 to 40 minutes, so you can quickly move on to the next stage of the project (a great convenience when setting fence posts) or backfill the hole to finish the job. Under normal curing conditions, you can apply heavy weight to the post (a basketball backboard, for example) after just 4 hours.

How deep should a 3 foot fence post be?

To begin, we suggest digging the post hole so it is approximately three times wider than the fence post. For example, if you have a 3 inch wide post that you need to sit over 1.83m (6ft) in height above the ground, we recommend the hole size should be: 230mm [wide] (9”) x 600mm [depth].

Should I use concrete for fence posts?

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 I need gravel under concrete?

Whether you pour concrete for a walkway or patio, a strong gravel base is required to prevent the concrete from cracking and shifting. Gravel is especially important in clay soil because it doesn’t drain well, which results in water pooling under the concrete slab and slowly eroding the soil as it finally drains.

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

Now that you’ve determined the size of the hole you’ll need, you can use the chart below to determine how many 50-pound bags of concrete you’ll need. Our example post will require two bags for every post if you’re using fast-setting concrete.

Is 1 foot deep enough for fence post?

You should always bury one-third of your fence post 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. For main and gateposts, you should dig the holes an additional 6 inches deep.

How do you dig a 3 foot 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…

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.

How deep do concrete fence posts need to be?

600mmConcrete fence posts must be fixed into the ground in the traditional way: by digging a hole. When concreting fence posts into the ground, the posts should be buried a minimum of 600mm deep. The recommended depth for a 1.80m or 6 foot high fence is 760mm or 2′ 6″.

How deep should posts be for a 6 foot fence?

2 feetThe 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). Add about 6 inches of QUIKRETE All-Purpose Gravel into the bottom of the hole.

How do I keep my post 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.