How much postcrete do I need for each wooden post?

Question

Hello all, I need some advice for how many bags of postcrete I will need for a new fence I will be putting up. The posts themselves will be 2.4m wooden posts for panels that are 1.8m by 1.8m. The posts will be put in soft and sandy soil. Can anyone give me an idea of what the bag to post ratio would be? 
Many Thanks, Bill

John · Accepted Answer

Hi Bill,
 Depends on the holes and their depth really. Typically, I would expect 1 to 2 bags per post in my own experience, but your rates may vary a bit. I should think 2 bags per post would be the safe option to make sure you don’t run out.

Toseef · Answer

You will need to dig 450MM down into the ground and also around 450mm wide. The post will go in the middle and then you will use around half a bag of postmix and also use around 1-2litres of water mixing as you hold the post in place. You will require an additional person to hold the post whilst pouring the mix in. When your postmix is drying leave a slope type finish to rot the wood.

Nicholas · Answer

Depends on the size of the holes but normally it's a bag per post. I have personally found that it's better to have 1 and a 1/2 bags, also dont mix it too wet, otherwise it takes a while to set and it's time consuming.

Russell · Answer

Usually two bags of postcrete per hole. What sizes are the post? 75mm X 75mm or 100mm X 100mm in old school 3"x 3" 4"x 4" but it all depends on the depth of the post you are putting in. I usually dig out to 600mm.
Hope this helps you. Cheers, Russ

Bernard · Answer

Hi Bill, you will need 2 bags of postcrete per fence post. Also, remember it sets in 10 minutes so make sure to have the post level before that time.

Regards,
Bernard

Martin · Answer

Hi for each post you will need at least 1 and a half to 2 bags per hole depending on width of hole.

Benni · Answer

Hi Bill, 
I hope my message finds you well. 
You’ll need to bury the posts at least 2ft In the ground. As for how many bags of postcrete you need per post, that’s purely dependant on how big you make the post holes. 
As a rule of thumb, when using standard post hole diggers, I average 1 bag per post. 
For larger holes I would allow 1.5 bags to 2 bags per hole.

I hope this helps. 
Kind regards,
Ben

Stephen · Answer

Hi Bill,
I use 1 and a half bags to each post, which is quite sufficient.
Regards,
SC Fencing.

Michael · Answer

In my experience 1/2 to a full bag will be needed. I always make sure the concrete comes near the top of the excavation. Just remember to use plenty of water.

Michael · Answer

The standard is 1 1/2 bags per post, I use 2. Try your best not to dig a hole too wide. I would suggest picking up some fence post hole diggers to make the job easier. They are usually around £35-40.

Daniel · Answer

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.

How much postcrete do I need for each wooden post?

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