Weatherables Fast 2k Fence Post Backfill

Fast 2K Fence Post Mix exceeded my expectations! I was looking for an alternative to traditional concrete that would save me time and effort, and this product delivered. The setup process was incredibly simple—just mix, pour, and let it set. Within minutes, the post was firmly in place, and I didn't have to deal with heavy bags of concrete or long curing times. I also appreciate that it expands to create a strong and stable hold, making it ideal for fence posts and other outdoor projects. Plus, it's lightweight and easy to store, which is a huge bonus. If you're looking for a fast, mess-free way to secure posts without the hassle of concrete, this is the perfect solution. Highly recommended!

I got this to secure my mailbox post in the ground. The post needed to be dug up and raised recently and I came across this product when looking for some kind of cement to make sure it stays put after this second install. It was very easy to mix up and pour out. We were mesmerized by the process of the liquid becoming the hardened foam type end result. Very cool to watch. After about a half hour, it was pretty firmed up. A bunch had come up higher than we wanted, but we covered it with rocks to hide it. It seems very sturdy after several weeks have passed. Hopefully it holds up through the winter. It was a little hard to remove from skin, so make sure everyone helping is wearing gloves too - they'll thank you later. They do include them in the package which is convenient. Overall, this was an inexpensive and quick way to do the job. I recommend. Update: it has been almost a year and it is still sturdy. No change over the winter at all. Looks like it's going to hold up just fine.

I was a bit skeptical after reading the reviews, but this product worked great for my application. I was installing a mailbox post. I used a 4x4 and a hole about 12" wide and about 18" deep (yeah, maybe I should have gone deeper, but being lazy ...). I dug the hole and used the filler per directions. The post was a little further back in the hole than it should have been (so backside got less of the goo). The stuff poured easily after mixing and filled the hole well. There were some air spots near the post itself (will see what happens when things freeze). I had to cut excess around the top, but after it set, everything was really very solid. Overall, impressed with how sturdy the post is. As I say, there were air pockets around the post though, so I am a little wary about what will happen when those fill with water and freeze. Will have to wait another year or two to see how that goes. Overall, impressed. Much easier than a wheelbarrow full of cement mix.

This stuff works extremely well. The H.B. Fuller Fast 2K Post Anchor Mix sets fast, expands properly, and locks posts in place like they’re never moving again. From a performance standpoint, it’s fantastic and does exactly what it promises. That said… be prepared. Once you start using it, there’s a very real chance you’ll be wearing it for the next month. If it touches your hands, clothes, tools, soul—congrats, it now belongs there. Gloves are not optional unless you enjoy explaining to people why your hands look like a DIY crime scene. Overall, it’s an outstanding product and incredibly effective. Just plan ahead, suit up properly, and accept that cleanup is more of a commitment than a task.

I set a 4x4, 8 foot post using this product. I made a hole 2 feet deep, 7 to 8 inch diameter. One package of this stuff nearly filled the entire hole with the post centered in it. Mixed it exactly as the instructions dictate. I was initially disappointed because the liquid I poured in only filled up a couple of inches. I was using a 2-foot level to confirm the pole was remaining vertical and then I looked in the hole and it was more than half-way full up with foam and I could see it rising. In perhaps 5 minutes more, it was nearly completely full up on all four sides. After 15 minutes I removed the straps I was using to hold the post in place, and light pressure on the sides of the post showed no give in the foam, it was solid enough to leave standing alone. Incredibly easy compared to how I used to have to mix a bag of sacrete by hand and carry the 30 or 40 pounds around. Wish I had another project needing another bag of this stuff so I could do it all again, it was well, "fun".