Quick Answer: How Long Do Concrete Posts Need To Set?

Do fence posts need to be set in concrete?

First rule, gang: Do not set wooden posts in concrete.

Look, no matter what preventative steps you take (and I’ll get to those), eventually wooden posts rot, and eventually you’ll have to set new ones.

Not only does burying them in concrete make for more work down the line, it actually can speed up the rotting..

How long does it take for quikrete to fully cure?

It takes about 24 hours for ready mix concrete to cure to half its strength. It will gain another quarter of its full strength in the next 24 hours. If the weather is hot, it will cure faster. If the weather is cold, it will cure slowly.

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 many bags of concrete do I need for a post hole?

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.

Can I pour concrete in a hole full of water?

The good news is that you can pour the concrete in water. … The biggest issue with pouring concrete under water is movement. If the water is moving, it can wash away the cement paste that’s holding the sand and gravel together. But if the water is calm, then it’s not a problem at all.

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.

Should I use 4×4 or 6×6 fence posts?

6×6 is overkill for sturdiness. 4×4 is the standard. And if you do it as a privacy fence, 6×6 posts stand out and make it look more substantial.

How deep should a 6 foot fence post be?

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).

How long does concrete take to set in a post hole?

20 to 40 minutesThe 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.