Perlite Insulated Floor

I rounded up all the woven poly bags and pleaded with Diane, the neighbor that has horses, and began to transfer the perlite to the bags and place them in the dug out floor space. I found the larger sacks(23"x39") to be better than the common "sand bag" size(14x26). There I tamped them down, which was pretty easy. The perlite stays a little squishy but after filling the gaps between the bags and laying down the first layer of gravel things were satisfyingly solid. Subsequent tamped layers of damp,clayey soil and CR8 (crusher run) sharp gravel made things very sound.