During the coming winter months I would like to finally prepare for a floor in our GH. Concrete seems to be our best option - but I would like your opinion for the best material to use for the GH Floor?
I was thinking of digging out the soil 6"s deep - screwing 2x4 redwood to the walk side of the 4x4 posts parallel to the raised bed on each side - installing perpendicular 2x4 redwood spacers at each 4x4 - then spreading gravel for a 3 1/2" thick concrete walk. There would be 3 1/2" of soil remaining between the concrete walk and the raised bed on each side of the walk. I would leave the 2x4 redwood forms in the concrete for appearance.
Does anyone see potential problems or concerns with installation of such a concrete walk in our GH from your experience with GH floors?