Adding rat-slab to existing crawl-space
I had that problem when I moved in. The back part of my house has a crawlspace where rats easily chewed holes in the siding. I replaced the bottom 2 feet of siding with metal lath on 2x4 framing and plastered it with cement mortar. I dug it below grade so they couldn't get under it. It looks like concrete, even though the plaster/lath is only 1/2&quot; thick. Just to be sure, I poured a 3&quot; concrete walkway around the outside perimeter. The materials were cheap, and no more rats.