Anyone use this expanding foam stuff before? While making plans to replace my wooden fence with vinyl I stumbled upon this product as a replacement to concrete. It seems almost too good to be true. A one pound bag of this liquid foam replaces 100 pounds of concrete and the price is reasonable ($10 a bag). You dig the hole, hold the post level, then pour in the liquid. It expands in about two minutes, hardens about 3-5 minutes after that and completely cures in two hours.

I went this route a few days ago and was impressed by how easy everything went. The fencing went right up since the posts cured so quickly. However, there's a fear of uncertainty because the foam is so damn light. I feel like at the first 30-40 mph wind storm, my fence may topple over.

Has anyone used this before and if so, what was your experience?

On a side note, pulling 32" concrete footings out of the ground was absolute

. I wouldn't wish that experience on my worst enemy, especially when they break apart underground.

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Posted by Art Vandelay

LOUISIANA

Member since Sep 2005

11152 posts

Posted on 5/29/20 at 8:50 pm to ClientNumber9

If your hole is the right size it works great. I suggest still using concrete on corners and made every few posts down the line.

But it doesn’t really matter. First storm is going to destroy your vinyl fence anyway.

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Posted by Jj283

Houma

Member since May 2015

806 posts

Posted on 5/29/20 at 10:38 pm to Art Vandelay

Agree. The wind kicks the shite out of vinyl fences.

I get that a lot of people use them cause they won’t ever rot, but they just blow down instead. I also think they look cheap.

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Posted by LSU Fan SLU Grad

Baton Rouge

Member since Nov 2006

4893 posts

Posted on 5/30/20 at 6:10 am to ClientNumber9

I just watched a review of this stuff on YouTube last night. It was a strong “Do not recommend”.