SP (Shake & Pour) - Fence Post Kit - Commercial Grade. Fast, Secure & Safe Concrete Alternative for Easy Fence Post Installation (2)

Ive worked several of these expanding foams, and this one was one of the easiest. Cam with bottles of compounds and enough room to mix, so you dont have to find your own mixing vessel. Also the foam is slow rise so you can work with it at normal speed and not have to rush through the process once mixed

this stuff works great better than concrete sets super fast

This stuff makes setting posts super easy. Compared to the 24+ hour wait time on cement the foam was solid after about 20 minutes. Used it to set two 4x4 posts for a hammock and a 2" pipe for tether ball and so far no issues.Mixing was easy. The reaction is quick, but you do have some time before it gets going. The mix bottle will start getting warm before it expands.Only reason for 4 stars was that the seals on the "B" bottles were broken and some leaked in shipping. Luckily did not lose much, but made one box a mess. Second box seemed fine, but when checked the seal on the "B" bottle was also broken. Looks like a manufacturing defect with the seal as only half the seal had a mark like it was heat sealed and was the same on both.

The product was easy to use set quick and hardened within an hour. I can’t speak for longevity yet bc the flag pole has only been up for a week and we haven’t had any strong winds yet

This is a great product.However the product was intended for areas near its home (Oklahoma City, OK) with loam soils free of of stone, tree roots and other material found in many regions of the country.I happened to live in New England, where rocks were invented. In my soil rocks begin at about 2' where soil stops. Below the soil one finds a gravel consisting of stones about the size of a large orange and sand. As one digs into this with a post-hole digger, a space is created which makes the hole pear-shaped. This does make the foam pear shaped as well, which should help retention. If one is using the hole to hold a 25' mast, the hole may not be deep enough.The other thing to watch out for is tree roots. At the top of the holes are the ends of tree roots about 1"" long n 1 side of the hole with no roots on the other side. As the foam rises in the hole, it's impeded on one side and cause the foam to be 'tilted'. I'm hoping this slope has minimal effect on the strength of the bond.I could find application reference or warning about such occurrences. This is why I rated the product only 3 stars, applications notes are very few. There are some videos on line that are useful, but were made in flatland settings. If you live in such a geological you are good to go.

It was so easy to use. Put in a new mail box dug my hole put the post in mixed the Kit poured it in and with in an hour we were all done. No clean up. Best way to go.

I carefully dug (2) 8" holes 24" deep. Good, dry soil, but hard digging. Propped the 4x4's and mixed and poured the product. For me, in 50 F. temperature, it rose only about 12" in the hole when per directions it should have filled the holes. It did set quickly at which point I had no choice but to put the soil back on top to finish the job. This was only for a temporary sign so not the end of the world. Had it been for fence posts I would have had a real problem.

Followed directions, dug a 24” deep hole, 8” wide for a 4x4 post. Mix the two parts per the instructions and poured it around the post. Held it level for 20 minutes. Checked it 4 hours later and the post wobbled so much it was usable. On an 80 degree day in hard clay soil. Poor product. Pulled the post out, scraped this product off the post, went to Home Depot got Sakcrete, mixed it per instructions. Worked excellent. Nary a bit of movement on the rock solid post.