Foam Vs Concrete For Fence Posts

The general rule of thumb when setting a post is that the depth of the post s hole needs to be 1 3 to 1 2 of the actual above ground height of the post.

Foam vs concrete for fence posts.

Concrete is cheaper and pretty fool proof vs. Setting posts in concrete vs. So six foot high fence posts ideally need to be buried three feet into the ground. Its only one bag per fence post so its not a big deal.

He said they still preferred concrete with two exceptions. The diameter of your post hole should be three times the diameter of your post. For a fence i think its fine to mix in hole but i find it is far easier to mix in a wheelbarrow. Do not exceed limit written on bag of concrete.

Expanding foam by meackerman the fence posts i ve if you go the gravel route the type of gravel makes a difference also. Also you do not have to cement every hole i do every other and the corners and gate support posts. Here i would use a 5 8 minus unsifted with all the powder the comes from the crushing process. 02 02 2016 10 02 am re.

If they were at a site where there wasn t easy access to water. The soil was a heavy black clayey soil. I used 4 braces per post. To make a long story short i ended up setting all of the posts in this high density foam in lieu of concrete.

Be mindful of how much water you add. I replaced termite riddled cedar installed with concrete with pressure treated. The advantage for me is i could set a post by myself using a very simple system of temporary braces to hold the posts for 15 minutes until the foam set up. The spade end was perfect for breaking up the existing concrete and then i extracted it with post hole diggers.

I used one of the heavy steel digging bars with a narrow spade on one end and an enlarged tamper on the other end.