Dirt falls down into substrate around the edges
Hi, I’m having trouble keeping my soil out of the drainage layer. My plan had been lava rock with weed blocking fabric over it, and soil over that, but especially around the outside edges, the soil fell down around the edge of the fabric. It seems like there must be some obvious solution I’m missing but I haven’t seen it referenced, the videos all seem to just lay down some fabric and it works perfectly. I could always caulk it to the side of the enclosure or resort to spray foam, but it seems like the must be some detail I’m missing.