The concrete creates a collar around the post and because different materials expand and contract with mosture and temperature at different rates inevitably a little space develops around the post.
Treated post in concrete.
This will seal the gap between the concrete and post that s caused by freeze thaw cycles.
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Pressure treated wood is one way to deter fungi from your pole barn posts.
Pressure treated wood posts or galvanized steel posts.
The photo on the right shows a post that has concrete poured around it which can lead to a crack like you see here.
When concrete is poured around a deck post in this way the post will rot due to moisture buildup by the soil.
Over time rotting will occur.
Position the post in the exact center of the hole so it will be surrounded by an even layer of cement on all sides.
The concrete at the top should be sloped away from the post to grade level to avoid water pooling around the base.
Preventing rot is the best way to ensure a long life for your pole barn.
Set the post into the form and temporarily stand straight.
The photo on the left shows a post set in a bracket that has been mounted to the top of a footer.
If you have a friend or family member nearby ask them to help you with this step.
Concrete tends to absorb moisture and wood expands when it gets wet.
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.
Make sure the post is plumb before allowing the concrete to set.
Place the form tube into the hole.
Make sure that the treated side of the post is facing downward.
We think a better way is to set the posts in brackets planted into the concrete.
Diy pole barns offers post rot protection.