Foam Instead Of Concrete For Post

Remember the last time you set a fence post.

Foam instead of concrete for post.

Is this foam replacing concrete. The spade end was perfect for breaking up the existing concrete and then i extracted it with post hole diggers. I replaced termite riddled cedar installed with concrete with pressure treated. Editors comments yes you can use the new foam that is available to stabilize support posts.

The foam like i said in the post there were possible issues with maybe the weather or the depth of the hole etc but if the whole point is to beat concrete i still say this failed in that respect. The disadvantage is the cost of the foam is higher than concrete. Suitable for all types of posts including wood steel and pvc. Has anybody used post setting foam in place of concrete for post footers.

Expanding foam is a lightweight waterproof alternative to concrete for homeowners wanting to set fence posts. 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. When i say high density foam i mean a foam that takes a claw hammer to penetrate after it sets up. You can t dig it out with your hand.

The first step is to drill holes in the problem concrete. If you re doing it right you wait a long time. I used 4 braces per post. Holes should be no less than six inches away from the edge of the concrete.

Lightweight pouch replaces two 50 lb. I used one of the heavy steel digging bars with a narrow spade on one end and an enlarged tamper on the other end. Once the holes have been set the geolift is injected in between the concrete and the dirt. Sika postfix is a two component pre proportioned polyurethane resin.

I think i spent about 500 more doing it this way than concrete. Bags of post mix. For more information check out this video. It was worth it to me.

The foam will fill up the parts of the concrete that are uneven and will raise it to the proper height. You did the hole level the post pour the concrete then wait. But make sure the post is treated for ground contact and that you follow these principles for footings. It is mixed in the bag to produce expanding foam for supporting and backfilling fence mail box gate and signage posts.