I'm interested in Permazyne as well. I've narrowed my soil hardening to them from other products like asphalt, concrete, chip seal (or tar and chip) (the tar used in asphalt applied to group and then a layer of rock on top that is pressed into the tar), DirtGlue (a polymer), Land Lock Natural paving (a polymer). The asphalt I don't want because it get too hot. The concrete because of the cost. The polymers because I could not find any examples of use in a cold climate like CO.
But Permazyne does have an example of a cold climate installation. It has a video on their web site (about midway down on
https://www.substrata.us/perma-zyme) for Atlas, Michigan. I called the city planner and talked to her for a while. They seem very happy with this product for the last 10 years. Saved them lots of money compared to other installs. Low maintenance over the years.
I'll be doing a small test sample where I park my trailer, before I decide if I want to apply it to the entire driveway.
