If you're looking into installing your own fence, or want to do research before hiring a contractor, you will likely encounter widely varying opinions on setting fence posts. Concrete offers the greatest stability, but also carries the risk of rot since the porous concrete can trap water against the ends of the wood. Gravel allows for water drainage but can also shift and make for wobbly fencing.
A good solution is to mix the two techniques for a result that's fairly stable but also allows water to drain away from the post. Here is how you can set wood fence posts in gravel and concrete. Note that this is assuming you already have the fence posts purchased and the holes dug to a depth that allows at least one-third of the post to sit inside.
Things You Need:
Step 1: Insert the Gravel and Post
Pour a couple of inches worth of gravel into the bottom of the post hole. Place the post down into the gravel and wiggle it around to dig the end into the gravel a bit. If the post isn't able to stand on its own yet, enlist a friend to hold the post straight while you continue with the gravel.
Continue adding gravel until the post is capable of standing on its own. Note that it doesn't have to stand on its own securely, it just needs to be able to stand up straight without anyone touching it. This is so the end of the post doesn't shift once you add the concrete.
Step 2: Prepare and Pour the Concrete
Follow the package directions on the quick concrete powder to mix it with water in a bucket. You want to use enough concrete to fill the rest of the hole that's not occupied with gravel. Make more concrete than you think you will need because some if it will seep down into the gravel.
Have someone hold the top of the post steady again. Quickly but carefully pour the concrete mix into the hole around the post. Try not to get any of the concrete on the upper parts of the post. If you do, rub it off the post with a damp washcloth before the concrete sets.
Allow the concrete to set for the time specified on the powder package. This is a fast acting product so the curing time should be within hours rather than days. Test that the post is secure by rocking it back and forth. If it moves, you need to add a few more inches of concrete.
Once all of your posts are set and cured, you can start attaching your fence panels. If you need professional help, contact a fencing company such as Four Corners Fencing.Share
3 June 2015
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