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Polyurethane Fence Post Mix

Mike

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Looks like I'm going to be replacing our mailbox and mailbox post this week and getting a shopping list together for a Lowes pick-up order and came across one of their "recommended items" called the Sika polyurethane fence post mix - reminds me of the expanding foam they sell in cans.


Do any of you have an experience with this stuff? Thoughts?
 

Mr_Yan

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I have not used one only seen them at the end-caps of aisles in Lowe's and Home Depot.

I used one of the green powder coated steel pound in fence post like this one and it worked great. This was in the middle of a fence run so there are 2x4s running off from it and the post is not a stand alone. The post is in it's 11th year and holding great, but the rest of the fence needs replacement now.
 

Mike

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Looks like some pretty interesting stuff. I keep thinking to myself it's expanding foam and there wouldn't be any weight to it. But I was watching a couple videos on this brand and similar brands and found this video that shows this stuff is really holding it's own compared to concrete.


I'll pick up a bag tonight and we'll give it a try.
 

w_r_ranch

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I was waiting too... I want to put another bird feeding station up, as the woodpecker family has been monopolizing the existing one & chasing the redbirds off.
 

Mike

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@Waite, so I replaced the mail box post and it seems pretty sturdy...no less than the concrete that was there prior. In fact the old post simply slid out of the concrete and instead of digging a huge concrete ball out I simply moved down a few feet and dug a new hole.

The Sika polyurethane fence post mix was super easy to use and works VERY fast!

Setting the post:
post-01.jpg

Just a couple seconds after I poured the mix into the hole and got my camera out again:
post-02.jpg

And about 30-40 seconds later:
post-03.jpg

The only thing that was a little concerning, and you can see in the picture above, is that one side seems like the Sika post mix looks like it's pulled away from the post. I really don't know if that is going to be an issue later down the road or not but right now the post seems pretty stable and certainly plenty stable enough for my little mailbox.

If I was to do it again, I probably would have filled the hole a bit more with some rock. I think having more rock and this mix would give it more weight and more stability - especially if using it for fences.
 

Mike

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Very nice. So you consider it as advertised?
Yes, absolutely. It worked very fast and exactly as I've seen in other review videos and on the bag. Like I said, the only thing I would have changed is added a bit more rock to the base of the post. Otherwise it's pretty impressive stuff and a bit fun to watch this little bit of liquid just take off and start filling the hole. :)

Very nice Mike ! Is that cedar wood? I really like it !
The post is cedar, though you couldn't really tell that now as we mistakenly put a semi-solid solid stain on it. Our hopes was that the stain would help protect the post for as long as possible but still let some of the wood grain show through. However, this semi-solid stain looks more like a solid stain. I wish we would have went with a semi-transparent now, but all in all it still looks good.
 

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