Concrete is cheaper and pretty fool proof vs.
Foam instead of concrete for post.
I replaced termite riddled cedar installed with concrete with pressure treated.
The first step is to drill holes in the problem concrete.
Expanding foam is a lightweight waterproof alternative to concrete for homeowners wanting to set fence posts.
Remember the last time you set a fence post.
When i say high density foam i mean a foam that takes a claw hammer to penetrate after it sets up.
But make sure the post is treated for ground contact and that you follow these principles for footings.
Has anybody used post setting foam in place of concrete for post footers.
If you re doing it right you wait a long time.
Suitable for all types of posts including wood steel and pvc.
Once the holes have been set the geolift is injected in between the concrete and the dirt.
The disadvantage is the cost of the foam is higher than concrete.
You did the hole level the post pour the concrete then wait.
The soil was a heavy black clayey soil.
I used one of the heavy steel digging bars with a narrow spade on one end and an enlarged tamper on the other end.
You can t dig it out with your hand.
I used 4 braces per post.
Is this foam replacing concrete.
Sika postfix is a two component pre proportioned polyurethane resin.
The temporary braces were merely 2 2 lengths 8 feet long of wood with cheap broom hangers screwed into each end and merely set in place by one hand when the post is plum.
Bags of post mix.
The spade end was perfect for breaking up the existing concrete and then i extracted it with post hole diggers.
Holes should be no less than six inches away from the edge of the concrete.
It was worth it to me.
For more information check out this video.
The foam will fill up the parts of the concrete that are uneven and will raise it to the proper height.
Lightweight pouch replaces two 50 lb.
The foam can be used in hot or cold weather and does not require mixing with water or.
It is mixed in the bag to produce expanding foam for supporting and backfilling fence mail box gate and signage posts.