Seek the advice of a local building regulations official. Take out rocks, shrubs and anything else that will be the way of your fence. Determine the locations of your posts: Use a measuring wheel to measure the distance between each post. When digging, make sure the holes are: Wide enough: Make the postholes three times wider than the width of your post.
Deep enough: The postholes should be deep enough that at least a third of the post is below grade. The hole you dig should also accommodate a 6-inch-deep gravel layer on which your post will rest. To do so, follow these steps: Add gravel: The first thing you want to pour into the hole is 6 inches of your gravel. Gravel serves as a stable foundation for the post to rest on and provides drainage away from the bottom of the post.
Place the fence post in the hole: Using the fence post, tamp your gravel down by setting your post in the hole and lifting the post up several inches and bringing it back down hard on your gravel.
Do this three to five times, and the gravel should even out. Make sure to wear gloves while doing this. Next, pour your premixed concrete in your posthole, trying to keep the level even all around the post. While doing this, make sure your assistant keeps your post centered and upright. One thing they absolutely must not do is lift the post, which will allow the concrete mix to get between the post and the gravel below.
If this happens, getting the post to touch the gravel again could be a lot of work. Add a gallon of water for every pound bag that you use.
For a posthole 30 inches deep, you will need around five gallons. You should add the water slowly, so it will have time to seep down, saturating the mix in the process.
If the posthole is more than 30 inches deep, we recommend that you pour the dry mix and water in two parts. Then, add the remaining dry mix and then the remaining water.
Doing this ensures the dry mix at the very bottom will receive enough water. Press the wet concrete: Once your fence post is completely plumb and level, firmly press the wet concrete around the base of the post using a narrow sharpshooter shovel.
Allow the concrete post to cure in the concrete: Before continuing constructing the fence, you will need to wait four to six hours for the concrete to cure completely. Making a String Guide We mentioned above that installing multiple posts in a straight line can be challenging without the right techniques.
Wait four to six hours for the concrete to cure. Run a top string: Tie one end of one string around one end post about 6 inches from the top. Run the string to the other end post and tie it 6 inches from the top there as well. Run a bottom string: Tie another string about 6 inches from the bottom of each post. Continue filling the hole with the dry fast-setting concrete mix until the mix sits approximately three inches below ground level.
A pound bag of mix will make approximately 0. Pour water on top of the dry concrete mix at a ratio of about one gallon per pound bag.
For the inch-deep hole mentioned above, that would require about five gallons of water. Add slowly, allowing the water to seep down and saturate the mix. Level the post as soon as the mix and water have been added to the hole. Work quickly. Quikrete Fast-Setting Concrete Mix will set in 20 to 40 minutes, and once it hardens, the post can no longer be adjusted.
Wait four hours for the concrete to cure before continuing construction of your fence. When installing multiple fence posts in a straight line, the simplest way to guarantee professional results, with all posts level and perfectly aligned with one another, is with a string guide.
Live in an area that gets a lot of rain? We hope that you will consider using precaste concrete fence posts and gravel boards on your next panel fencing project. All project content written and produced by Mike Edwards , founder of DIY Doctor and industry expert in building technology. Find a tradesman now! We love feedback on our DIY tutorials it helps us to make them the best they possibly can be so if you have any comments you would like to share with us, click the button below and let us know.
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Blog DIY Competitions. Twitter Facebook Pin It Buffer. Project Page Menu. Completed run of fencing constructed using concrete fence posts Installing Concrete Fence Posts for Your Panel Fence With the right tools, concrete posts apart from being much heavier are no harder to work with than timber posts, plus also the fact that they last forever! Petrol powered disc cutter with diamond cutting disc This is easily overcome with the right tools and by hiring, or borrowing, a decent power disk cutter, an 8ft post can easily be trimmed down to the right size.
Cut the bottom off the post, rather than the top as the top is shaped. More on this below. Different Types of Concrete Fence Post Starting at the beginning, work out which type of posts you need. There are three types: Corner posts Intermeadiate posts End posts The corner post, as you can see, accepts two panels, ar right-angles to each other, to form a corner in your run.
Concrete corner post accepts two fence panels at right angles to form a corner in the fence run Then come the intermediate posts. Each one of these also accepts two panels but end-to-end. Intermediate fence posts are used to joint two fence panels end-to-end in a straight fencing run Finally comes the end post.
This post only has one groove to accept the last panel in the run. Concrete end post used to complete the end of a run of fence panels When you buy your posts they will be 2. Measuring the height of your chosen fence panels Measure your fence panel height. The fence panel height in this project is 1. After measuring height of fence panel, add the depth of your chosen gravel board Now add the height of the fence post that you would like to stick up above the fence panel.
Height of fence post sticking above fence panel Now add the depth of post which is to be concreted into the ground, in this case, mm. Add together the total height of teh fence panel, post and gravel board to work out how much to chop off of post Adding the depth, to the gravel board, to the panel, to the upstand, gives us exactly 2m.
Only cut teh bottom of the post Be careful when using the cutter, they are very powerful indeed. A post level can be a useful tool to ensure that you are level in both planes: Use a fence post level to ensure the post is level on all sides — Fence post levels available from our online store here Next, place a gravel board into the slot and dig your second post hole at the end of the gravel board.
Make sure you use a string line, or straight edge to keep your fence as straight as possible. All the different types of fence post used to construct a fencing run All that remains is to drop your fence panels in and you are now a master of the concrete fence post! Once all fence posts installed and concrete cured, drop in your fence panels to complete the job While it might seem daunting to attempt to fence with concrete posts and concrete gravel boards, it is not a great deal more difficult as you have hopefully seen.
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