Testing Post Setting Expandable Foam | Can This Replace Concrete?

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Fast 2k Fence Post Mix -
Sika PostFix-


I love the idea of using 2.5 lb bags of foam instead of mixing up 100 lbs of concrete. Is this thought too good to be true? That is what we will test today with the 2 leading products for setting 4x4 posts with expandable foam. I will show you the surprising results and my final verdict on whether either can be a replacement for good old fashion concrete.

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DISCLAIMER: This video and description contain affiliate links, which means that if you click on one of the product links, I’ll receive a small commission.